Bioaccumulation of Heavy Metals in Clarias Gariepinus Exposed to Untreated Pa...ijtsrd
This study presents the heavy metal accumulation profile in Clarias gariepinus catfish exposed to untreated paint effluent. Sub lethal concentrations of paint effluent were used to pollute catfish aquaria. This was followed by isolation and identification of microorganisms from the polluted aquaria after 96 h using conventional microbiological techniques. The tissue heavy metal composition and physicochemical parameters of the aquaria were also monitored using standard analytical methods. Microbial load in the range of 10.00a±2.00 to 189.00d±20.52 cfu ml on tissues of catfish were observed. The heavy metals present in the paint effluent were mainly Lead 1.20±0.01ppm and Zinc 0.34±0.01ppm . No significant difference in the proximate analysis between the tissue of catfish from the control and the polluted aquaria were observed. Catfish tissue accumulated Lead 0.16 ppm from the polluted aquaria. Persistent exposure through pollution by effluent in aquatic environment can lead to increased metallic Lead bioaccumulation that could be unhealthy for both the fish and human consumption. Therefore, indiscriminate discharge of untreated effluent from industrial sites into water bodies should be discouraged. Orimoloye, M. A | Mohammed, A ""Bioaccumulation of Heavy Metals in Clarias Gariepinus Exposed to Untreated Paint Effluent"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-2 , February 2020, URL: https://www.ijtsrd.com/papers/ijtsrd29989.pdf
Paper Url : https://www.ijtsrd.com/other-scientific-research-area/other/29989/bioaccumulation-of-heavy-metals-in-clarias-gariepinus-exposed-to-untreated-paint-effluent/orimoloye-m-a
The Use Of Ecchornia crassipes To Remove Some Heavy Metals From Romi Stream: ...iosrjce
The study involved a laboratory experiment on the use of Ecchornia crassipes in the removal of
some heavy metals from a stream polluted by waste water from Kaduna Refinery and Petrochemical Company.
Water sample was collected from Kaduna Refinery effluent point, Romi up and Romi down. The
Bioconcentration (BCF) and Biotranslocation (BTF) Factors of each metal were determined. The experinmental
study showed that Ecchornia crassipes is a suitable candidate for effective removal of heavy metals (Hg, Cd,
Mn, Ag, Pb, Zn) from Romi stream.
Heavy Metals Contamination Levels In Suya Meat Marketed In Selected Towns In ...iosrjce
IOSR Journal of Environmental Science, Toxicology and Food Technology (IOSR-JESTFT) multidisciplinary peer-reviewed Journal with reputable academics and experts as board member. IOSR-JESTFT is designed for the prompt publication of peer-reviewed articles in all areas of subject. The journal articles will be accessed freely online.
A pilot study on effect of copper and cadmium toxicity in Tilapia Mossambicusresearchanimalsciences
Cu and Cd is trace element for most organisms including fish, but above certain limit Cu and Cd will be toxic. The present study was conducted to evaluate the toxic effect of Cu and Cd on Tilapia mossambicus via estimating the acute 96h median lethal concentration (LC50) value. A total 120 number of Tilapia mossambicus fingerlings were subjected to 12 numbers 20-L aquaria. Fish were exposed to 0.0, 2.0, 4.0, 6.0, 8.0 and 10.0mg Cu and Cd/L for 4 days. Each dose was represented by two aquaria. Fish was daily observed and dead fish were removed immediately. The data obtained were evaluated using Behrens-Karber’s Method. The 96 h LC50 value of Cu for Tilapia mossambicus was calculated to be 6.0mg Cu/L with Behrens-Karber’s Method. The 96 h LC50 value of Cd for Tilapia mossambicus was calculated to be 4.8mg Cd/L with Behrens-Karber’s Method. The behavioral changes of Tilapia mossambicus were primarily observed. It could be concluded that Tilapia mossambicus species slightly sensitive to Cu and Cd when compare both metal cadmium is more toxic than copper for the fish species.
Article Citation:
Anushia C, Sampath kumar P and Selva Prabhu A.
A Pilot Study on Effect of Copper and Cadmium Toxicity in Tilapia Mossambicus.
Journal of Research in Animal Sciences (2012) 1(1): 020-027.
Full Text:
http://janimalsciences.com/documents/AS0008.pdf
Removal of Cr (VI) Through the Use of the Agroindustrial Residue of the Perse...CrimsonpublishersMCDA
We analyzed the Chromium (VI) removal capacity in aqueous solution by the Persea americana biomass, using the diphenyl carbazide method to evaluate the metal concentration. Biosorption at different pH (1, 2, 3, and 4) was evaluate for different times. We too studied the effect of temperature in the range of 28 to 60 °C and the removal at different initial concentrations of Cr (VI) of 200 to 1000mg/L. Therefore, the highest biosorption of the metal (50mg/L) occurs within 270 minutes, at pH of 1.0 and 28 °C. According to temperature, the highest removal was observing at 60 °C, in 45 minutes, when the metal is completely adsorbed. At the analyzed concentrations of Cr (VI), fungal biomass, showed excellent removal capacity, besides it removes efficiently the metal in situ (100% removal in earth and water contaminated, after 5 and 6 days of incubation, 5 and 10g of biomass, 10g of earth and 100mL of water; so, it can be used to eliminate it from industrial wastewater.
https://crimsonpublishers.com/mcda/fulltext/MCDA.000570.php
For more open access journals in Crimson Publishers please click on link: https://crimsonpublishers.com
For more articles on journal of agronomy and crop science please click on below link: https://crimsonpublishers.com/mcda/
Investigation of cadmium (Cd) and lead (Pb) contents in soil, orange fruit an...Innspub Net
Heavy metals are among the most environmentally toxic substances. Cadmium (Cd) and Lead (Pb) are extremely toxic heavy metals and their presence in the soil poses severe danger to the food security and consequently human health. Present study was carried out to investigate the concentration of Cd and Pb in soil, Orange and human blood. Soil and orange fruit samples were collected from same garden. Blood samples were taken from 6 volunteers at two stages before consumption and 4 hours after orange fruit consumption. Cadmium concentration in soil samples were found to be higher than the permissible limit of Cd set by the World Health Organization (WHO). It was noted that Pb concentration in soil was within safe limit of WHO. Orange fruit exceed the safe limit for concentration of both the metals. The cadmium concentration in blood sample before (2.7 ± 0.3ppm) and after eating orange fruit (2.75 ± 0.3ppm) were found different. The difference between cadmium concentration before and after consumption is 0.05ppm. The lead concentration in blood before consumption of orange fruit was (5.05 ± 1.15ppm) while after consumption was (5.88 ± 1.25ppm). The difference found between before and after treatment is 0.83ppm. Further investigation is suggested to find the effect of toxic metals like Cadmium and lead on human physiology and biochemistry.
Bioaccumulation of Heavy Metals in Clarias Gariepinus Exposed to Untreated Pa...ijtsrd
This study presents the heavy metal accumulation profile in Clarias gariepinus catfish exposed to untreated paint effluent. Sub lethal concentrations of paint effluent were used to pollute catfish aquaria. This was followed by isolation and identification of microorganisms from the polluted aquaria after 96 h using conventional microbiological techniques. The tissue heavy metal composition and physicochemical parameters of the aquaria were also monitored using standard analytical methods. Microbial load in the range of 10.00a±2.00 to 189.00d±20.52 cfu ml on tissues of catfish were observed. The heavy metals present in the paint effluent were mainly Lead 1.20±0.01ppm and Zinc 0.34±0.01ppm . No significant difference in the proximate analysis between the tissue of catfish from the control and the polluted aquaria were observed. Catfish tissue accumulated Lead 0.16 ppm from the polluted aquaria. Persistent exposure through pollution by effluent in aquatic environment can lead to increased metallic Lead bioaccumulation that could be unhealthy for both the fish and human consumption. Therefore, indiscriminate discharge of untreated effluent from industrial sites into water bodies should be discouraged. Orimoloye, M. A | Mohammed, A ""Bioaccumulation of Heavy Metals in Clarias Gariepinus Exposed to Untreated Paint Effluent"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-2 , February 2020, URL: https://www.ijtsrd.com/papers/ijtsrd29989.pdf
Paper Url : https://www.ijtsrd.com/other-scientific-research-area/other/29989/bioaccumulation-of-heavy-metals-in-clarias-gariepinus-exposed-to-untreated-paint-effluent/orimoloye-m-a
The Use Of Ecchornia crassipes To Remove Some Heavy Metals From Romi Stream: ...iosrjce
The study involved a laboratory experiment on the use of Ecchornia crassipes in the removal of
some heavy metals from a stream polluted by waste water from Kaduna Refinery and Petrochemical Company.
Water sample was collected from Kaduna Refinery effluent point, Romi up and Romi down. The
Bioconcentration (BCF) and Biotranslocation (BTF) Factors of each metal were determined. The experinmental
study showed that Ecchornia crassipes is a suitable candidate for effective removal of heavy metals (Hg, Cd,
Mn, Ag, Pb, Zn) from Romi stream.
Heavy Metals Contamination Levels In Suya Meat Marketed In Selected Towns In ...iosrjce
IOSR Journal of Environmental Science, Toxicology and Food Technology (IOSR-JESTFT) multidisciplinary peer-reviewed Journal with reputable academics and experts as board member. IOSR-JESTFT is designed for the prompt publication of peer-reviewed articles in all areas of subject. The journal articles will be accessed freely online.
A pilot study on effect of copper and cadmium toxicity in Tilapia Mossambicusresearchanimalsciences
Cu and Cd is trace element for most organisms including fish, but above certain limit Cu and Cd will be toxic. The present study was conducted to evaluate the toxic effect of Cu and Cd on Tilapia mossambicus via estimating the acute 96h median lethal concentration (LC50) value. A total 120 number of Tilapia mossambicus fingerlings were subjected to 12 numbers 20-L aquaria. Fish were exposed to 0.0, 2.0, 4.0, 6.0, 8.0 and 10.0mg Cu and Cd/L for 4 days. Each dose was represented by two aquaria. Fish was daily observed and dead fish were removed immediately. The data obtained were evaluated using Behrens-Karber’s Method. The 96 h LC50 value of Cu for Tilapia mossambicus was calculated to be 6.0mg Cu/L with Behrens-Karber’s Method. The 96 h LC50 value of Cd for Tilapia mossambicus was calculated to be 4.8mg Cd/L with Behrens-Karber’s Method. The behavioral changes of Tilapia mossambicus were primarily observed. It could be concluded that Tilapia mossambicus species slightly sensitive to Cu and Cd when compare both metal cadmium is more toxic than copper for the fish species.
Article Citation:
Anushia C, Sampath kumar P and Selva Prabhu A.
A Pilot Study on Effect of Copper and Cadmium Toxicity in Tilapia Mossambicus.
Journal of Research in Animal Sciences (2012) 1(1): 020-027.
Full Text:
http://janimalsciences.com/documents/AS0008.pdf
Removal of Cr (VI) Through the Use of the Agroindustrial Residue of the Perse...CrimsonpublishersMCDA
We analyzed the Chromium (VI) removal capacity in aqueous solution by the Persea americana biomass, using the diphenyl carbazide method to evaluate the metal concentration. Biosorption at different pH (1, 2, 3, and 4) was evaluate for different times. We too studied the effect of temperature in the range of 28 to 60 °C and the removal at different initial concentrations of Cr (VI) of 200 to 1000mg/L. Therefore, the highest biosorption of the metal (50mg/L) occurs within 270 minutes, at pH of 1.0 and 28 °C. According to temperature, the highest removal was observing at 60 °C, in 45 minutes, when the metal is completely adsorbed. At the analyzed concentrations of Cr (VI), fungal biomass, showed excellent removal capacity, besides it removes efficiently the metal in situ (100% removal in earth and water contaminated, after 5 and 6 days of incubation, 5 and 10g of biomass, 10g of earth and 100mL of water; so, it can be used to eliminate it from industrial wastewater.
https://crimsonpublishers.com/mcda/fulltext/MCDA.000570.php
For more open access journals in Crimson Publishers please click on link: https://crimsonpublishers.com
For more articles on journal of agronomy and crop science please click on below link: https://crimsonpublishers.com/mcda/
Investigation of cadmium (Cd) and lead (Pb) contents in soil, orange fruit an...Innspub Net
Heavy metals are among the most environmentally toxic substances. Cadmium (Cd) and Lead (Pb) are extremely toxic heavy metals and their presence in the soil poses severe danger to the food security and consequently human health. Present study was carried out to investigate the concentration of Cd and Pb in soil, Orange and human blood. Soil and orange fruit samples were collected from same garden. Blood samples were taken from 6 volunteers at two stages before consumption and 4 hours after orange fruit consumption. Cadmium concentration in soil samples were found to be higher than the permissible limit of Cd set by the World Health Organization (WHO). It was noted that Pb concentration in soil was within safe limit of WHO. Orange fruit exceed the safe limit for concentration of both the metals. The cadmium concentration in blood sample before (2.7 ± 0.3ppm) and after eating orange fruit (2.75 ± 0.3ppm) were found different. The difference between cadmium concentration before and after consumption is 0.05ppm. The lead concentration in blood before consumption of orange fruit was (5.05 ± 1.15ppm) while after consumption was (5.88 ± 1.25ppm). The difference found between before and after treatment is 0.83ppm. Further investigation is suggested to find the effect of toxic metals like Cadmium and lead on human physiology and biochemistry.
Research Inventy : International Journal of Engineering and Scienceresearchinventy
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
Heavy Metals Level Evaluation in Lycopersicon Esculentum Tomato and Daucus Ca...ijtsrd
The exposure to heavy metals such as Ni, Cd, Cr, Co, Pb, As, Hg, Zn, Fe and Cu, has been reported as a risk to human health through the consumption of vegetable when exposed to air pollution and other environmental and agricultural pesticides. This paper is aimed to evaluate the level of heavy metal in carrot and tomatoes cultivated in two farming communities in Kazaure Local Government Area, Jigawa State, Nigeria. The heavy metals were analysed using Atomic Absorption Spectroscopy. The result showed that the mean levels concentration of heavy metals from carrot and tomatoes fruit cultivated from the two farming communities in Kazaure namely Gada and Firji farming areas. The heavy Ni, Cd, Fe, Pb, Mn, Zn and Cr concentration for carrots cultivated at Gada farming area were ranged from 0.06 0.09 mg kg, 0.08 0.09 mg kg, 8.24 8.91 mg kg,0.13 0.23 mg kg,1.23 ,1.56 1.67 mg kg and 0.02 0.04 mg kg respectively. The heavy metals As Cu and Co were not detected in the fruits of carrot for cultivated in both two farming areas. While the mean concentration obtained from tomatoes fruits from the Gada and Firji farming areas ranged from 0.14 0.16 mg kg, 0.06 0.07 mg kg, 6.11 6.12 mg kg, 0.97 0,99 mg kg, 1.11 1.23 mg kg, 0.35 0.39 mg kg for Ni, Cd, Fe, Mn, Zn and Cr respectively. While As, Cu, Pb and Co were not found in tomatoes harvested from the two farming communities. The study concludes that the level of some heavy metals analysed in carrot and tomatoes fruits were found within the permissible level except lead and cadmium. Ibrahim M. D | Abdulmumin Y | Abdulmumin T. M | Adamu A. U "Heavy Metals Level Evaluation in Lycopersicon Esculentum (Tomato) and Daucus Carota (Carrot) Cultivated In Two Farming Communities in Kazaure Local Government Area" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-3 , April 2020, URL: https://www.ijtsrd.com/papers/ijtsrd30269.pdf Paper Url :https://www.ijtsrd.com/biological-science/biochemistry/30269/heavy-metals-level-evaluation-in-lycopersicon-esculentum-tomato-and-daucus-carota-carrot-cultivated-in-two-farming-communities-in-kazaure-local-government-area/ibrahim-m-d
combined toxicity and bioconcentration of fluoride and arsenic in african (3)IJEAB
Laboratory experiments were performed to examine the combined toxic effects of two important aquatic contaminants viz., arsenic and fluoride on African catfish, Clarias gariepinus. Additionally, the bio concentration factors (BCFs) of the two contaminants in tissues and blood of catfish were also determined. The LC50 for sodium fluoride and arsenic trioxide were determined to be 619.3 mg L-1, 30.3 mg L-1, respectively. Erratic swimming movements with hyperactivity, loss of equilibrium, augmented air gulping and decreased food consumption were observed in the experimental groups. In co-exposure groups of arsenic and fluoride, the concentration of fluoride in fish tissues increased with increasing water fluoride concentration in the test aquaria with significant differences (P<0.01)><0.05)>0.05) among the exposure groups. Arsenic was observed to exceedingly bioaccumulate and biomagnify in the tissues. Perhaps due to the complex formation of arsenic and fluoride the bio concentration of arsenic in tissues was observed to decrease with increasing water fluoride concentration and vice-versa. The study concludes that fluoride may interfere with the bio-concentration of arsenic.
DOI:10.21276/ijlssr.2016.2.4.9
and so pollutant burdens recorded in soft body tissue, bones, feathers and eggs are likely to reflect chemical contamination
within their extended home ranges. These local, upper trophic level species are believed to be especially vulnerable to
metals and play a very important role as environmental contamination indicators. The concentration of Lead (Pb),
Cadmium (Cd), Copper (Cu), Zinc (Zn) and Iron (Fe) were determined in feather samples of Long-billed vultures (Gyps
indicus) (n = 100) collected from Tikamgarh, Lalitpur, Shivpuri, Chanderi and Panna Districts of Bundelkhand Region
during 2007-2011. Sample preparation and analyses of metals were performed in the Indian Veterinary Research Institute,
Izatnagar, Bareilly. Metal level in the samples was analyzed by Atomic Absorption Spectrophotometer (AAS 4141,
ECIL, Hyderabad, India) wavelength of 229.5 nm (detection limit 0.005 μg/mL) and 217 nm (detection limit 0.025
μg/mL), respectively with 6mA current. The concentration of Cd, Pb, Cu, Zn and Fe determined in all the feathers
collected from five sites was within the range of 0.1μg/g-0.4 μg/g, 0.47μg/g-6.4 μg/g, 2.9μg/g- 8.11μg/g, 9 μg/g- 21.4
μg/g and 18.3μg/g- 194.9μg/g respectively According to ANOVA test, significant differences (0.05) were found for metals
(Pb, Cd, Cu, Zn and Fe) in all feathers from Tikamgarh, Lalitpur, Shivpuri, Chanderi and Panna. When the metal toxicity
results in feathers were seen district wise (Tikamgarh, Lalitpur, Shivpuri, Chanderi and Panna) no significant variance
were reported in the occurrence of metals. No significant relationships were found between the metals in feather sample
concentrations and their death. It can therefore be concluded that the metal concentrations are much below the lethal toxic
levels and had no affect on the health of the dead vultures. The results of this study allowed concluding that the
Long-billed vultures in the study area were not exposed to metal poisoning. The absence of linkage between the metal
toxicity and vulture mortalities is not unexpected when consulted with other previous studies. Key-words- Long-billed vultures, Feathers, Lead, Cadmium, Copper, Zinc, Iron
Isolation and Characterization of Nickel Tolerant Bacterial Strains from Elec...Agriculture Journal IJOEAR
Abstract— In the present study, an attempt was made to isolate and characterize nickel tolerant bacterial strains from the electroplating effluent contaminated soil. The effluent sample was collected at the direct outlet of electroplating industry and analyzed for physico-chemical characteristics such as pH (6.5), temperature (33), electrical conductivity (15.1 ms/cm), total solids (2309mg/l), total dissolved solids (5573 mg/l), chloride (0.20mg/l), sodium (0.13ppm), calcium (2.23ppm), potassium (0.20ppm), Biological Oxygen Demand (4200mg/l), Chemical Oxygen Demand (5243 mg/l) and nickel (4.063ppm). Enumeration of total bacterial population from the electroplating effluent contaminated soil sample was made in nutrient agar medium. Sixteen bacterial colonies were selected based on their abundance growth all of them were identified through morphological and biochemical characteristics. All the sixteen bacterial isolates were screened for its metal tolerance using nutrient agar medium incorporated with nickel metal. Based on the better growth performance, six bacterial strains were selected as potential metal tolerant organism. The selected metal tolerant bacterial strains were further characterized in the various environmental conditions such as pH (5, 7 & 9) temperature (5°C, 28°C, 37°C & 45°C) and concentration of metal ions (100ppm, 200ppm, 300ppm & 400ppm) for 5 days. The result reveals that one bacterial strain, Pseudomonas sp 1 was showed better growth in nickel metal based medium with pH 7 at 37°C temperature.
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
The International Journal of Engineering and Science (The IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Assessment on Accumulation of Heavy Metals and its Effect on Liver Tissues of...ijtsrd
Heavy metal pollution is a very serious issue in the present world and is caused by release of toxic substances from industrial and domestic sources into the sea water leading to harm marine organisms. Marine fishes are commonly consumed for its nutritional benefits and thus lead to transfer toxic metals into the food chain. Harpodon nehereus is a common and local fish from west coast of Maharashtra with high consumption rate among local population. Fish organs particularly liver being major site of detoxification shows structural alterations on exposure to pollution stress from their surrounding environment. Histopathological examination provides an indication of organ impairment to evaluate the health status of selected fish and the degree of pollution in marine environment. The present research effort was done to evaluate the concentration of heavy metals and to study histopathological alterations in liver tissues of largely consumed fish Harpodon nehereus collected from Sassoon dock, west Coast of Maharashtra, India. The research was carried out during the post-monsoon season of the year. High accumulation of lead 11.8 ± 8.34 mg kg , copper 20.46 ± 11.06 mg kg and Zinc 286.26 ± 114.5 mg kg were observed in liver tissues. Further histopathological study of present investigation reveals heavy damages in liver tissues of Harpodon nehereus representing that the selected fish is under high threat of pollution stress. Archana Oza | Leena Muralidharan "Assessment on Accumulation of Heavy Metals and its Effect on Liver Tissues of Harpodon Nehereus from Mumbai Coast of Maharashtra, India" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-2 , February 2019, URL: https://www.ijtsrd.com/papers/ijtsrd20250.pdf
Paper URL: https://www.ijtsrd.com/biological-science/zoology/20250/assessment-on-accumulation-of-heavy-metals-and-its-effect-on-liver-tissues-of-harpodon-nehereus-from-mumbai-coast-of-maharashtra-india/archana-oza
Health risk assessment of consuming heavy metal contaminated benthic seafood,...Premier Publishers
This study evaluated health risks associated with the consumption of a seafood (bivalve - Anadara (Senilia) senilis) contaminated with some heavy metals in southern Nigeria. Atomic absorption spectrophotometry was used for metal analysis. Mean metal concentrations (µgg-1) was in the order of Zn(12.96±1.0)> Pb(4.69±0.6)> Cr(2.91±0.7)> Ni(2.47±0.2)> Cu(2.03±0.3)> Cd(1.68±0.2). Mean concentrations of Cr, Cu and Zn were below their respective FAO/WHO recommended limits while those of Ni, Cd and Pb exceeded. The Estimated daily intake-EDI values of all metals were less than their respective reference oral doses-RFD implying minimal health risk. The target hazard quotient (non-carcinogenic) and hazard index-HI had values <1suggesting minimal health risk of non-carcinogenic origin but HI value showed potency of increase. The value of Incremental Lifetime Cancer Risk-ILCR ranged from 10-5-10-2 with Ni and Cd within the acceptable range of 10-4-10-6 while Cr and Pb exceeded the limit. The target cancer risk-TR had values of 10-3 indicating moderate to high risk according to the New York State Department of Health classification. The study concluded the presence of moderate to high carcinogenic risk due to Cr and Pb for consumers of heavy metal contaminated seafood (bivalves) in southern Nigeria. Minimal consumption and further action are advised with regular monitoring to detect changes.
Research Inventy : International Journal of Engineering and Scienceresearchinventy
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
Heavy Metals Level Evaluation in Lycopersicon Esculentum Tomato and Daucus Ca...ijtsrd
The exposure to heavy metals such as Ni, Cd, Cr, Co, Pb, As, Hg, Zn, Fe and Cu, has been reported as a risk to human health through the consumption of vegetable when exposed to air pollution and other environmental and agricultural pesticides. This paper is aimed to evaluate the level of heavy metal in carrot and tomatoes cultivated in two farming communities in Kazaure Local Government Area, Jigawa State, Nigeria. The heavy metals were analysed using Atomic Absorption Spectroscopy. The result showed that the mean levels concentration of heavy metals from carrot and tomatoes fruit cultivated from the two farming communities in Kazaure namely Gada and Firji farming areas. The heavy Ni, Cd, Fe, Pb, Mn, Zn and Cr concentration for carrots cultivated at Gada farming area were ranged from 0.06 0.09 mg kg, 0.08 0.09 mg kg, 8.24 8.91 mg kg,0.13 0.23 mg kg,1.23 ,1.56 1.67 mg kg and 0.02 0.04 mg kg respectively. The heavy metals As Cu and Co were not detected in the fruits of carrot for cultivated in both two farming areas. While the mean concentration obtained from tomatoes fruits from the Gada and Firji farming areas ranged from 0.14 0.16 mg kg, 0.06 0.07 mg kg, 6.11 6.12 mg kg, 0.97 0,99 mg kg, 1.11 1.23 mg kg, 0.35 0.39 mg kg for Ni, Cd, Fe, Mn, Zn and Cr respectively. While As, Cu, Pb and Co were not found in tomatoes harvested from the two farming communities. The study concludes that the level of some heavy metals analysed in carrot and tomatoes fruits were found within the permissible level except lead and cadmium. Ibrahim M. D | Abdulmumin Y | Abdulmumin T. M | Adamu A. U "Heavy Metals Level Evaluation in Lycopersicon Esculentum (Tomato) and Daucus Carota (Carrot) Cultivated In Two Farming Communities in Kazaure Local Government Area" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-3 , April 2020, URL: https://www.ijtsrd.com/papers/ijtsrd30269.pdf Paper Url :https://www.ijtsrd.com/biological-science/biochemistry/30269/heavy-metals-level-evaluation-in-lycopersicon-esculentum-tomato-and-daucus-carota-carrot-cultivated-in-two-farming-communities-in-kazaure-local-government-area/ibrahim-m-d
combined toxicity and bioconcentration of fluoride and arsenic in african (3)IJEAB
Laboratory experiments were performed to examine the combined toxic effects of two important aquatic contaminants viz., arsenic and fluoride on African catfish, Clarias gariepinus. Additionally, the bio concentration factors (BCFs) of the two contaminants in tissues and blood of catfish were also determined. The LC50 for sodium fluoride and arsenic trioxide were determined to be 619.3 mg L-1, 30.3 mg L-1, respectively. Erratic swimming movements with hyperactivity, loss of equilibrium, augmented air gulping and decreased food consumption were observed in the experimental groups. In co-exposure groups of arsenic and fluoride, the concentration of fluoride in fish tissues increased with increasing water fluoride concentration in the test aquaria with significant differences (P<0.01)><0.05)>0.05) among the exposure groups. Arsenic was observed to exceedingly bioaccumulate and biomagnify in the tissues. Perhaps due to the complex formation of arsenic and fluoride the bio concentration of arsenic in tissues was observed to decrease with increasing water fluoride concentration and vice-versa. The study concludes that fluoride may interfere with the bio-concentration of arsenic.
DOI:10.21276/ijlssr.2016.2.4.9
and so pollutant burdens recorded in soft body tissue, bones, feathers and eggs are likely to reflect chemical contamination
within their extended home ranges. These local, upper trophic level species are believed to be especially vulnerable to
metals and play a very important role as environmental contamination indicators. The concentration of Lead (Pb),
Cadmium (Cd), Copper (Cu), Zinc (Zn) and Iron (Fe) were determined in feather samples of Long-billed vultures (Gyps
indicus) (n = 100) collected from Tikamgarh, Lalitpur, Shivpuri, Chanderi and Panna Districts of Bundelkhand Region
during 2007-2011. Sample preparation and analyses of metals were performed in the Indian Veterinary Research Institute,
Izatnagar, Bareilly. Metal level in the samples was analyzed by Atomic Absorption Spectrophotometer (AAS 4141,
ECIL, Hyderabad, India) wavelength of 229.5 nm (detection limit 0.005 μg/mL) and 217 nm (detection limit 0.025
μg/mL), respectively with 6mA current. The concentration of Cd, Pb, Cu, Zn and Fe determined in all the feathers
collected from five sites was within the range of 0.1μg/g-0.4 μg/g, 0.47μg/g-6.4 μg/g, 2.9μg/g- 8.11μg/g, 9 μg/g- 21.4
μg/g and 18.3μg/g- 194.9μg/g respectively According to ANOVA test, significant differences (0.05) were found for metals
(Pb, Cd, Cu, Zn and Fe) in all feathers from Tikamgarh, Lalitpur, Shivpuri, Chanderi and Panna. When the metal toxicity
results in feathers were seen district wise (Tikamgarh, Lalitpur, Shivpuri, Chanderi and Panna) no significant variance
were reported in the occurrence of metals. No significant relationships were found between the metals in feather sample
concentrations and their death. It can therefore be concluded that the metal concentrations are much below the lethal toxic
levels and had no affect on the health of the dead vultures. The results of this study allowed concluding that the
Long-billed vultures in the study area were not exposed to metal poisoning. The absence of linkage between the metal
toxicity and vulture mortalities is not unexpected when consulted with other previous studies. Key-words- Long-billed vultures, Feathers, Lead, Cadmium, Copper, Zinc, Iron
Isolation and Characterization of Nickel Tolerant Bacterial Strains from Elec...Agriculture Journal IJOEAR
Abstract— In the present study, an attempt was made to isolate and characterize nickel tolerant bacterial strains from the electroplating effluent contaminated soil. The effluent sample was collected at the direct outlet of electroplating industry and analyzed for physico-chemical characteristics such as pH (6.5), temperature (33), electrical conductivity (15.1 ms/cm), total solids (2309mg/l), total dissolved solids (5573 mg/l), chloride (0.20mg/l), sodium (0.13ppm), calcium (2.23ppm), potassium (0.20ppm), Biological Oxygen Demand (4200mg/l), Chemical Oxygen Demand (5243 mg/l) and nickel (4.063ppm). Enumeration of total bacterial population from the electroplating effluent contaminated soil sample was made in nutrient agar medium. Sixteen bacterial colonies were selected based on their abundance growth all of them were identified through morphological and biochemical characteristics. All the sixteen bacterial isolates were screened for its metal tolerance using nutrient agar medium incorporated with nickel metal. Based on the better growth performance, six bacterial strains were selected as potential metal tolerant organism. The selected metal tolerant bacterial strains were further characterized in the various environmental conditions such as pH (5, 7 & 9) temperature (5°C, 28°C, 37°C & 45°C) and concentration of metal ions (100ppm, 200ppm, 300ppm & 400ppm) for 5 days. The result reveals that one bacterial strain, Pseudomonas sp 1 was showed better growth in nickel metal based medium with pH 7 at 37°C temperature.
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
The International Journal of Engineering and Science (The IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Assessment on Accumulation of Heavy Metals and its Effect on Liver Tissues of...ijtsrd
Heavy metal pollution is a very serious issue in the present world and is caused by release of toxic substances from industrial and domestic sources into the sea water leading to harm marine organisms. Marine fishes are commonly consumed for its nutritional benefits and thus lead to transfer toxic metals into the food chain. Harpodon nehereus is a common and local fish from west coast of Maharashtra with high consumption rate among local population. Fish organs particularly liver being major site of detoxification shows structural alterations on exposure to pollution stress from their surrounding environment. Histopathological examination provides an indication of organ impairment to evaluate the health status of selected fish and the degree of pollution in marine environment. The present research effort was done to evaluate the concentration of heavy metals and to study histopathological alterations in liver tissues of largely consumed fish Harpodon nehereus collected from Sassoon dock, west Coast of Maharashtra, India. The research was carried out during the post-monsoon season of the year. High accumulation of lead 11.8 ± 8.34 mg kg , copper 20.46 ± 11.06 mg kg and Zinc 286.26 ± 114.5 mg kg were observed in liver tissues. Further histopathological study of present investigation reveals heavy damages in liver tissues of Harpodon nehereus representing that the selected fish is under high threat of pollution stress. Archana Oza | Leena Muralidharan "Assessment on Accumulation of Heavy Metals and its Effect on Liver Tissues of Harpodon Nehereus from Mumbai Coast of Maharashtra, India" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-2 , February 2019, URL: https://www.ijtsrd.com/papers/ijtsrd20250.pdf
Paper URL: https://www.ijtsrd.com/biological-science/zoology/20250/assessment-on-accumulation-of-heavy-metals-and-its-effect-on-liver-tissues-of-harpodon-nehereus-from-mumbai-coast-of-maharashtra-india/archana-oza
Health risk assessment of consuming heavy metal contaminated benthic seafood,...Premier Publishers
This study evaluated health risks associated with the consumption of a seafood (bivalve - Anadara (Senilia) senilis) contaminated with some heavy metals in southern Nigeria. Atomic absorption spectrophotometry was used for metal analysis. Mean metal concentrations (µgg-1) was in the order of Zn(12.96±1.0)> Pb(4.69±0.6)> Cr(2.91±0.7)> Ni(2.47±0.2)> Cu(2.03±0.3)> Cd(1.68±0.2). Mean concentrations of Cr, Cu and Zn were below their respective FAO/WHO recommended limits while those of Ni, Cd and Pb exceeded. The Estimated daily intake-EDI values of all metals were less than their respective reference oral doses-RFD implying minimal health risk. The target hazard quotient (non-carcinogenic) and hazard index-HI had values <1suggesting minimal health risk of non-carcinogenic origin but HI value showed potency of increase. The value of Incremental Lifetime Cancer Risk-ILCR ranged from 10-5-10-2 with Ni and Cd within the acceptable range of 10-4-10-6 while Cr and Pb exceeded the limit. The target cancer risk-TR had values of 10-3 indicating moderate to high risk according to the New York State Department of Health classification. The study concluded the presence of moderate to high carcinogenic risk due to Cr and Pb for consumers of heavy metal contaminated seafood (bivalves) in southern Nigeria. Minimal consumption and further action are advised with regular monitoring to detect changes.
A wetland is a land area that is saturated with water , either permanently or seasonally, such that it takes on the characteristics of a distinct ecosystem .
The primary factor that distinguishes wetlands from other
land forms or water bodies is the characteristic vegetation of aquatic plants , adapted to the unique hydric soil.
The Use Of Pistia stratiotes To Remove Some Heavy Metals From Romi Stream: A ...iosrjce
The study involved a laboratory experiment on the use of Pistia stratiotes in the removal of some
heavy metals from a stream polluted by waste water from Kaduna Refinery and Petrochemical Company. Water
sample was collected from Kaduna Refinery effluent point, Romi up and Romi down. The Bioconcentration
(BCF) and Biotranslocation (BTF) Factors of each metal were determined. The experinmental study showed
that Pistia stratiotes is a suitable candidate for effective removal of heavy metals (Hg, Cd, Mn, Ag, Pb, Zn) from
Romi stream.
Food security in a growing population with limited natural resources is one of
the most important issues of the world. Accumulation of heavy metals in food and
their concentrations increase and reaching to a risk limit can threaten human health.
The purpose of this study, is to study the heavy metals lead and cadmium in
vegetables, cultured on spinach and watercress at 10 Gardens of Ardabil. This study is
cross-sectional and 81 samples in water, soil, and spinach and watercress were
prepared during the months of June, July and August in 2015 and after preparation
according to the standard methods and using atomic absorption spectrophotometer
(Perkin Elmer) for the determination of heavy metals. SPSS software was used for data
analysis. The results showed that the mean level of lead and cadmium in all samples
were less than the EPA standard. Between studied orchards in terms of the amount of
cadmium and lead no statistically significant different was seen. The independent ttest
showed that in terms of cadmium between two species of spinach and watercress
there found a significant difference at the 5% level so that the amount of cadmium in
spinach was more than the watercress. Since the concentration of heavy metals in all
samples at second and third stages in July and August were zero, but in the first step
in June, the amount of heavy metals have been found in some samples showed that
all three samples of first cut had more contamination than second and third cut. And
in this case, the concentration of heavy metal pollution in hibernation at vegetable
gardens Ardabil is possible. The results of spinach cadmium amount in the first cut in
the three garden of viz.,3, 6 and 10 showed that in the garden (3), the amount of
cadmium in water is higher than the standard and is concentrated in spinach and the
gardens of 6 and 10 Cadmium in the soil of the gardens, is slightly higher that is
condensed in spinach thus it can be considered that spinach in terms of cadmium has
bioaccumulation.
Remediation of heavy metals lead, cobalt and copper from industrail wastewate...EditorIJAERD
To fulfil human beings requirement number of industries increases day by day which play important role in
development of country but also causes environment pollution. Effluent of many industries contain heavy metals and
other contaminants. Industrial effluent usually used for agriculture purposes without treatment. Plants take these heavy
metals from industrial water and accumulate it in roots and Arial parts which become the part of animal and human
body through food chain causes various diseases. In this research work plants were grown using wastewater of industrial
effluents. Three sample of wastewater were made of various concentration level of lead, copper and cobalt. Typha
latifoliate was grown in controlled environment. Three sample of wastewater were used. Soil used in pots was of known
concentration of heavy metals. Using x-ray fluorescence spectrometry was used to find concentration of contaminants in
soil before and after plantation and atomic absorption spectrometry was used to find concentration of heavy metals in
industrial effluent. Wastewater of various concentration level was obtained by adding domestic water having no heavy
metals. Extraction percentage performed by plants in various lawn was found by analysis of soil before and after the
maturity of plants. soil which was irrigated by fully contaminated wastewater was remediated by 10%. Soil in which
plants were irrigated by diluted wastewater was remediated by 15 and 21% respectively for copper and cobalt. Plants
matured in seventy-five days in winter season.
Remediation of heavy metals lead, cobalt and copper from industrail wastewate...EditorIJAERD
To fulfil human beings requirement number of industries increases day by day which play important role in
development of country but also causes environment pollution. Effluent of many industries contain heavy metals and
other contaminants. Industrial effluent usually used for agriculture purposes without treatment. Plants take these heavy
metals from industrial water and accumulate it in roots and Arial parts which become the part of animal and human
body through food chain causes various diseases. In this research work plants were grown using wastewater of industrial
effluents. Three sample of wastewater were made of various concentration level of lead, copper and cobalt. Typha
latifoliate was grown in controlled environment. Three sample of wastewater were used. Soil used in pots was of known
concentration of heavy metals. Using x-ray fluorescence spectrometry was used to find concentration of contaminants in
soil before and after plantation and atomic absorption spectrometry was used to find concentration of heavy metals in
industrial effluent. Wastewater of various concentration level was obtained by adding domestic water having no heavy
metals. Extraction percentage performed by plants in various lawn was found by analysis of soil before and after the
maturity of plants. soil which was irrigated by fully contaminated wastewater was remediated by 10%. Soil in which
plants were irrigated by diluted wastewater was remediated by 15 and 21% respectively for copper and cobalt. Plants
matured in seventy-five days in winter season.
Removal of heavy metals (Cr, Cd, Ni and Pb) using fresh water algae (Utricula...Innspub Net
A study was conducted to check the efficiency of different fresh water algae for removing heavy metals (Cr, Cd, Ni and Pb) from contaminated water. The three most abundant indigenous algal species namely Ulothrix tenuissima, Oscillatoria tenuis and Zygogonium ericetorum were collected from fresh water channels of Parachinar, Pakistan and brought to the laboratory of Soil and Environmental Sciences Department at the University of Agriculture, Peshawar Pakistan for proper identification. To check the efficiency for removing heavy metals artificial contaminated water was prepared and was inoculated with mix culture of above mentioned algae and incubated for 10 days. After incubation algal species were removed from water through centrifugation and was dried, digested and analyzed for heavy metals. The results showed that the concentration of all heavy metals was substantially reduced in the algal inoculated contaminated water. The analysis of algal biomass showed that considerable amount of metals and other elements were recovered in algae. Among the tested algal species, Zygogonium ericetorum showed maximum removal Ni(99.40ug) and Cr(66.84ug) from contaminated water followed by Oscillatoria tenuis with 84ug(Ni) and 64.83ug(Cr) respectively. However Oscillatoria tenuis showed maximum removal of Cd(41.00ug) than the other algal species. Similarly Zygogonium ericetorum showed maximum removal of Pb (451ug) followed by Ulothrix tenuissima where 441ug was recorded. Highest amount Cd, and Ni were recovered in Zygogonium ericetorum biomass while highest amount of Cr and Pb were recorded in the biomass of Oscillatoria tenuis. Finally it could be concluded that algae have efficiently removed heavy metals from contaminated water. Further research is needed to test other algal species for removal of heavy metal and other elements from the contaminated water.
Biosorption of Copper (II) Ions by Eclipta Alba Leaf Powder from Aqueous Solu...ijtsrd
The removal of heavy metals from industrial wastewater is of great concern as heavy metals are non-biodegradable, toxic elements that cause serious health problems if disposed of in the surrounding environment. The present study, Karisalangkani (Eclipta Alba) leaves were used for the adsorption of heavy metals like copper (Cu (II)) ions. The bio sorbent was characterized using SEM and BET analysis. The bio sorption experiments are conducted through batch system. The operating parameters studied were initial metal ion concentration, adsorbent dosage, initial solution pH, contact time and effect of temperature Adsorption equilibrium is achieved in 30 min and the adsorption kinetics of Cu (II) is found to follow a pseudo-second-order kinetic model. Equilibrium data for Cu (II) adsorption are fitted well by Langmuir isotherm model. The maximum adsorption capacity for Cu (II) ions is estimated to be 9.2 mgg at 25 °C. The experimental result shows that the materials have good potential to remove heavy metals from effluent and good potential as an alternate low cost adsorbent. Due to their outstanding adsorption capacities, Eclipta Alba is excellent sorbents for the removal of copper (II) ions. B. Kavitha | R. Arunadevi"Biosorption of Copper (II) Ions by Eclipta Alba Leaf Powder from Aqueous Solutions" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5 , August 2018, URL: http://www.ijtsrd.com/papers/ijtsrd17156.pdf http://www.ijtsrd.com/chemistry/environmental-chemistry/17156/biosorption-of-copper-ii-ions-by-eclipta-alba-leaf-powder-from-aqueous-solutions/b-kavitha
The present study intended to compare the efficiency of the wetland plants Phragmites australis (cav.)
Trin. ex Steudel and Cyperus papyrus L. for the accumulation of heavy metals. Maximum accumulation
of the heavy metals Pb (132.5-175 μg/g DW), Zn (97.5-100 μg/g DW) and Cr (80.5-90 μg/g DW) was
recorded in roots of the two wetland plants C. papyrus and P. australis, respectively. Cadmium showed
the lowest metal accumulation in the tissues of both plants (0.55-5.5 μg/g DW). C. papyrus roots
accumulated higher levels of most metals than those of P. australis. Heavy metals were shown to be not
only accumulated in roots of both plants but also were translocated to the shoots and accumulated in the
harvestable plant parts. The results showed variation in the levels of the heavy metals accumulated in the
different parts of C. papyrus and P. australis, in spite of being planted at the same site and subjected to
the same conditions. The potential use of Phragmites australis and Cyperus papyrus in phytoremediation
is also discussed.
Corchorusolitoriuswaste(mulukiya) as a potential sorbent for the removal of c...IOSR Journals
This work was conducted to determine the practicability of using a new adsorbent Corchorusolitorius(mulukiya)waste,for the removal of cadmium (Cd(II)), and thorium (Th(IV)) from wastewater. Corchorusolitoriuswereanalysis by Fourier transform infraredFTIR , scanning electron microscopy (SEM) and energy dispersive X-ray Spectroscopy (EDEX). Some parameters such as adsorbent dosage, solution pH’s, initial metal ion concentrations, and contact time, that influence adsorption phenomenon, were studied. The optimum pH for maximum adsorption of Cd(II) and Th(IV) was found to be 5.55 and 4.50, respectively. The contact time required for reaching equilibrium was 2 hr. The pseudo second-order kinetic model was the best fit to represent the kinetic data. Analysis of the equilibrium adsorption data using Langmuir and Freundlich models showed that theLangmuir model was well suitable to describe the metal ions adsorption.
A Pilot Study on Effect of Copper and Cadmium Toxicity in Tilapia Mossambicus researchanimalsciences
Cu and Cd is trace element for most organisms including fish, but above certain limit Cu and Cd will be toxic. The present study was conducted to evaluate the
toxic effect of Cu and Cd on Tilapia mossambicus
via estimating the acute 96h median lethal concentration (LC 50 ) value. A total 120 number of
Tilapia mossambicus fingerlings were subjected to 12 numbers 20 L aquaria. Fish were exposed to 0.0, 2.0,
4.0, 6.0, 8.0 and 10.0mg Cu and Cd/L for 4 days. Each dose was represented by two aquaria. Fish was daily observed and dead fish were removed immediately. The data obtained were evaluated using Behrens - Karber’s Method. The 96 h LC 50 value of Cu for Tilapia mossambicus was calculated to be 6.0mg Cu/L with Behrens - Karber’s Method. The 96 h LC
50 value of Cd for Tilapia mossambicus was calculated to be 4.8mg Cd/L with Behrens - Karber’s Method. The behavioral changs of Tilapia mossambicus
were primarily observed. It could be concluded that Tilapia mossambicus species slightly sensitive to Cu and Cd when compare both metal
cadmium is more toxic than copper for the fish species.
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
1. 7938
ISSN 2286-4822
www.euacademic.org
EUROPEAN ACADEMIC RESEARCH
Vol. II, Issue 6/ September 2014
Impact Factor: 3.1 (UIF)
DRJI Value: 5.9 (B+)
Phytoremedial Potential of Aquatic Plants for
Heavy Metals Contaminated Industrial Effluent
UZMA MAJEED1
Department of Plant and Environmental Protection
Pakistan
IFTIKHAR AHMAD
MAHMOODUL HASSAN
ASHIQ MOHAMMAD
Pakistan Agricultural Research Council (PARC)
Pakistan
Abstract:
Research was conducted to assess the potential of 3 native
aquatic macrophytes/plant species Water Hyacinth
(Eichhorniacrassipes), Water Lettuce (Pistiastratiotes) and Coontail
(Ceratophyllumdemersum) by growing on heavy metal contaminated
industrial effluent collected from the Fuse shop of Pakistan Ordinance
Factory, WahCantt, Rawalpindi. After initiation of the experiment, the
plant shoots and associated wastewater samples were collected
periodically, after every 6 days interval the experiment was terminated
on 24th day. The collected shoots and effluent samples were analyzed
for total copper (Cu), chromium (Cr), cadmium (Cd), zinc (Zn), nickel
(Ni) and lead (Pb) concentrations. Metal concentration of the effluent
was found to be 3.35, 3.81, 3.42 mg, 3.73, 2.66 and 3.33 mg L-1 for Cu,
Ni, Pb, Cr, Zn and Cd respectively. The concentration of Cu, Ni, Pb,
Cr, Zn and Cd observed in Water Hyacinth treated wastewater was
reduced to 0.00, 0.20, 0.002, 0.2, 0.02 and 0.01 mg L-1 respectively.
Water Lettuce reduced the concentration of Cu, Ni, Pb, Cr, Zn and Cd
in the wastewater as 0.03, 0.00, 0.002, 0.1, 0.02 and 0.001 mg L-1
respectively. Coontail reduced the heavy metal concentration of effluent
to 0.05, 0.00, 0.00, 0.13, 0.1, 0.00 mg L-1 for Cu, Ni, Pb, Cr, Zn and Cd
1 Corresponding Author: uzmalone@gmail.com
2. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
Phytoremedial Potential of Aquatic Plants for Heavy Metals Contaminated
Industrial Effluent
EUROPEAN ACADEMIC RESEARCH - Vol. II, Issue 6 / September 2014
7939
respectively. The total metal concentration observed in the
phytoremediation plants was different for different metals. The
maximum metal concentration removed by Water Hyacinth was 68.4 g
-20L, 64.7 g -20L for Cr and Cu respectively. The total metal
concentration removal by Water Lettuce for Cu was relatively more
than Water Hyacinth i.e. 65.1 g -20L. Coontail efficiently removed
highest metal concentration of Cu, Ni, Cr and Cd than both the other
aquatic plants which was observed as 73.7 g -20L, 78.1 g -20L, 76.1 g -20L
and 70.5 g -20L respectively. Coontail was found efficient for the
removal of heavy metals from the wastewater as compared Water
Hyacinth and Water Lettuce.
Key words: wastewater, macrophytes, industrial effluent,
phytoremediation
Novelty Statement:
The study was conducted to analyze the potential of aquatic
macrophytes Water Hyacinth (Eichhorniacrassipes), Water
Lettuce (Pistiastratiotes) and Coontail
(Ceratophyllumdemersum) by growing on heavy metal
contaminated industrial effluent collected from the Fuse shop of
Pakistan Ordinance Factory, Wah Cantt, Rawalpindi. Results
showed that these plant species could be used for managing and
decontamination of wastewater with heavy metals.
I- Introduction
There is an increasing concern, for couple of decades, about the
rising environmental pollution and its irreparable drastic
effects on community health. The polluted water used for
growing crops pollutes arable land and also enters into the food
chain causing severe health hazards to humans (Aslam, 1998).
Effluents contain high amount of heavy metals such as Fe, Cu,
Zn, Pb, Cd, Cr and Ni. Industrial and municipal sewage water
is considered as a cheap source of irrigation water as it contains
3. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
Phytoremedial Potential of Aquatic Plants for Heavy Metals Contaminated
Industrial Effluent
EUROPEAN ACADEMIC RESEARCH - Vol. II, Issue 6 / September 2014
7940
some nutritional value and organic matter contents.
Continuous uses of such effluents result in heavy metals
accumulation in soil and food chain (Malla et al., 2007). Heavy
metal ions are either toxic to organisms themselves or induced
efficiency in others. Some metals such as Fe, Mg, Co, Cu and Ni
are essential nutrients in their low permissible limits. However,
if present above the permissible limit these are toxic to
biological system (Qadir et al., 1999). The most hazardous
metals in the contaminated waste water are Cd, Cr, Cu, Ni, As,
Pb and Zn, and are discharged from the chemical intensive
industries involved in metal processing. Living organisms
absorb heavy metals due to their high solubility in aquatic
environment. Toxic substances are released in the environment
and also add lethal effects on living organisms in food chain
(Dembitsky, 2003) and can cause severe health disorders (Babel
and Kurniawan, 2003).
Some heavy metals cause diseases like skin
manifestations, intuitive cancers and diseases related to vessels
and arteries. Cd can cause injury to kidney, renal disarray and
mutations in human cells. Similarly, Cr may cause pain,
sickness, diarrhea and queasiness; Cu damages liver causes
Wilson disease and insomnia. Further Ni causes dermatitis,
nausea, chronic asthma, cough and cancer. Zn leads to
depression, lethargy, neurological signs and increased thirst
and Pb is a cause of damaging fetal, brain, causes disease of
kidneys, circulatory and nervous system (Babel and
Kurniawan, 2003). On ranking, Pakistan stands as the 41st in
the world in industrial production (IMF WEOD, 2012). The
industries comprise of fertilizer, cement, cooking oil, sugar,
tobacco, steel, chemicals, machinery and foodstuff processing
are the chief cause of contaminating water bodies and urban
areas.
Pakistan Ordinance Factory (POF), a largest defense
industrial complex under the Ministry of Defense Production
located in Wah Cantt, is producing conventional arms and
4. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
Phytoremedial Potential of Aquatic Plants for Heavy Metals Contaminated
Industrial Effluent
EUROPEAN ACADEMIC RESEARCH - Vol. II, Issue 6 / September 2014
7941
ammunition to international standards and currently POF
comprises of fourteen ordinance factories and three commercial
subsidiaries. Pakistan Ordinance Factories manufacture
commercial explosive, ammunition, hunting and posses’ wide-
ranging facilities for the manufacturing of brass, aluminum,
copper, ingots, extrusion and sections for non-military
applications (POF, 2011).
A range of physical, chemical and biological techniques
are available to remediate the industrial effluent.
Sedimentation, screening, ventilation, filtration, flotation and
degasification techniques are the physical methods used to
remediate the industrial effluent (Peters et al., 1986). Chemical
methods are chlorination, ozonation, neutralization, adsorption
and ion exchange (Peters et al., 1986), and biological techniques
are activated sludge treatment, trickling filtration, oxidation
ponds, anaerobic digestion, septic tanks and lagoons (Foot et
al., 1993). Biological treatment techniques include
bioremediation, which uses the microbes or plants for the
degradation and transformation of pollutants to harmless state
within the maximum permissible limits (Muller et al., 1996).
Certain species of higher plants have the ability to amass
exceptionally high concentrations of metals in their tissues
without showing the toxic effect on the plant itself (Klassen et
al., 2000; Bennett et al., 2003).
Aquatic species that are explored and identified from the
polluted water and also tested for the phytoremediation of
heavy metals (Pb, Cu, Zn, Cr, Cd, Co, Fe, Hg, As etc) include,
Lemna minor (Duck Weed), Eichhornia crassipes (Water
Hyacinth) (Reddy and DeBusk, 1987; So et al., 2003), Pistia
stratiotes (Water Lettuce) (Sridhar, 2006), Ceratophyllum
demersum (Coontail) (Rai et al., 1995; Tripathi et al., 1995;
Devi and Prasad, 1998; Arvind and Prasad, 2005), Oenathe
javanica (Water Dropwort), Polygonum amphibian (Sharp
Dock), Lepironia articulate (Calamus) Hydrocotyle umbellate
(Pennywort) (Prasad and Freitas, 2003), Elodea canadensis
5. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
Phytoremedial Potential of Aquatic Plants for Heavy Metals Contaminated
Industrial Effluent
EUROPEAN ACADEMIC RESEARCH - Vol. II, Issue 6 / September 2014
7942
(American elodea, Canadian pond-weed) (Pamela et al., 1997),
Phragmites australis (Reed) (Aslam et al., 2007; Bragato et al.,
2006), Scirpus tabernaemontani (Zebra rush) (Skinner et al.,
2007) and Ipomoea aquatica (Water Spinach), Azolla
caroliniana (Water Ferns) (Rahman and Hasegawa, 2011).
The objectives of the present study were to quantify the metal
concentrations in the effluent of the Fuse Shop C-12, Pakistan
Ordinance Factory Wah Cantt and to explore the
phytoextraction potential of native aquatic plant species for the
remediation of effluent.
II- Materials and Methods
i) Industrial Effluent Phytoremediation
This study was conducted to quantify the metal contents in the
industrial effluent and to explore the phytoremedial potential of
aquatic plants. The experiment was conducted at
Bioremediation Site I, at National Institute of Bioremediation,
PARC Institute of Advanced Studies in Agriculture, National
Agricultural Research Centre (NARC), Islamabad. Industrial
effluent was collected from the Fuse Shop C-12, of the Pakistan
Ordinance factory (POF), Wah Cantt, Rawalpindi. In the Fuse
Shop different ammunition parts are processed for Anodizing
(growth of oxide film on certain metals) (Robert, 2002),
Passivation (preserving and strengthening the appearance of
metallic’s) (Brown et al., 2005) and electroplating (depositing a
layer of material to give a desired property e.g., corrosion,
lubricity etc) (Stelter and Bombach, 2004). The water used in
the processes of anodizing, passivation and electroplating of
different arms and ammunition was collected separately in
three cemented tanks constructed outside the Fuse Shop.
Two composite untreated mixed effluent samples, one
for initial characterization and the second sample for
phytoremediation experiments, were collected from the outlet of
Fuse Shop C-12 in two sequentially washed (tap water, acid
6. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
Phytoremedial Potential of Aquatic Plants for Heavy Metals Contaminated
Industrial Effluent
EUROPEAN ACADEMIC RESEARCH - Vol. II, Issue 6 / September 2014
7943
and deionized distilled water washing) polypropylene
containers. The effluent sample collected for initial
characterization was treated with distilled nitric acid to prevent
the microbial activities and stored at 40C. The effluent samples
were then transported to National Agricultural Research
Centre, Islamabad.
The collected effluent sample was filtered through 0.42
µm cellulose nitrate filter using vacuum filtration assembly and
analyzed for the pH, Hardness, Nitrates, Alkalinity, Electrical
Conductivity (EC) and Cations (Na, Ca, K & Mg) using
following standard methods. The pH of the effluent was
measured by using the pH Micrometer (Tandon, 2005). Total
alkalinity of the heavy metal contaminated industrial effluent
was measured using titration method using methyl orange
indicator as described by APHA (1981). Total Hardness of the
effluent was measured by buffer method (APHA, 1981). The
Electrical Conductivity of the effluent samples was measured
by the potable EC meter (cyber scan series 600) (Tandon, 2005).
The determination of Nitrate-Nitrogen of each sample was
measured using Hydrazine Reduction Method (Kamphake et
al., 1967). The effluent samples were filtered through 0.42 µm
pore size cellulose nitrate filter. The filtrate was then analyzed
for metals contents Cd, Cr, Pb, Cu, Ni and Zn using Flame
Atomic Absorption Spectrometer (PerkinElmer AAnalyst-800).
Three plant species, i.e. Water Hyacinth (Eichhornia
crassipes), Water Lettuce (Pistia stratiotes) and Coontail
(Ceratophyllum demersum), locally available, were collected
from the Bioremediation Plant Nursery of National Institute of
Bioremediation, National Agricultural Research Centre,
(NARC) Islamabad, Pakistan. The experiment was conducted in
the plastic tubs (top diameter was 35" inches and bottom
diameter was 25" inches). Twenty liters effluent from bulk was
poured into each of the acid washed plastic tubs and the aquatic
plants were transferred to the plastic tubs in six replicates,
grown for 24 days, and sampled after every 6 days for five
7. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
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times. The samples were withdrawn in 100 mL double distilled
washed polyethylene bottles and labeled. Similarly, plant
samples were collected after every six days, for five times, and
thoroughly washed with running tap water followed by distilled
water to avoid any surface contamination. The plant material
was cleaned with blotting paper for removing surface moisture
and dried at 60 oC till constant weight. Three aquatic plant
species with six replicates were arranged in Randomized
Complete Block Design (RCBD). The data was statistically
analyzed using two factor (Plant species and time) factorial
experiments under RCBD. Analysis of Variance (ANOVA) of the
measured parameters was performed using Statistix 8.1 and
variable means were compared using Least Significant
Difference (LSD).
ii) Analytical Procedure
The collected effluent sample was filtered through 0.42 µm
cellulose nitrate filter using vacuum filtration assembly and
analyzed for the pH, Hardness, Nitrates, Alkalinity, Electrical
Conductivity (EC) and Cations (Na, Ca, K & Mg) using
following standard methods. The pH of the effluent was
measured by using the pH Micrometer (Tandon, 2005). Total
alkalinity of the heavy metal contaminated industrial effluent
was measured using titration method using methyl orange
indicator as described by APHA (1981). Total Hardness of the
effluent was measured by buffer method (APHA, 1981). The
Electrical Conductivity of the effluent samples was measured
by the potable EC meter (cyber scan series 600) (Tandon, 2005).
The determination of Nitrate-Nitrogen of each sample was
measured using Hydrazine Reduction Method (Kamphake et
al., 1967). The effluent samples were filtered through 0.42 µm
pore size cellulose nitrate filter. The filtrate was then analyzed
for metals contents Cd, Cr, Pb, Cu, Ni and Zn using Flame
Atomic Absorption Spectrometer (PerkinElmer AAnalyst-800).
8. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
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III- Results
i) Heavy metal concentration of effluent after
phytoremediation
The Ordinance Factory Effluent was initially analyzed for
different physical and chemical parameters (Tables 1 & 2). The
effluent was alkaline in reaction having pH of 7.35 that lies in
safe limits of effluent disposal standards (pH 6-10). The
Electrical Conductivity was 0.53 dS m-1, Carbonates and
Bicarbonates were 0.28 and 1.13 mg L-1, respectively, Calcium +
Magnesium (Ca + Mg) was 1.68 mg L-1 whereas Sodium (Na)
and Potassium (K) were 3.45 and 0.78mg L-1, respectively
(Table 1). The effluent of the Fuse Shop C-12, Pakistan
Ordinance Factory was also initially analyzed for Zn, Cd, Cr,
Pb, Cu and Ni concentration (Table. 2). The Cu concentration of
the effluent was 3.35 mg L-1, Ni concentration was 3.81 mg L-1,
Pb concentration was 3.42 mg L-1, concentration of Cr was 3.73
mg L-1, concentration of Zn was 2.66 mg L-1 and that of Cd was
3.33 mg L-1. The observed concentrations of the metals were
found higher than their permissible limits for wastewater
disposal (Table 2).
An exponential reduction in effluent metals
concentrations were observed between six and twelve days after
initiation of experiment. Afterwards, the reduction in effluent
metal concentration was either very slow or not occurred (Figs.
1-6). The initial Cu concentration of the effluent was 3.35 mg L-
1 and was significantly (P <0.05) reduced to 0.05 mg L-1 on
twenty fourth day by Coontail and 0.00 mg L-1 by Water
Hyacinth and Water Lettuce, Ni concentration was 3.81 mg L-1
and reduced to 0.00 mg L-1 on twelfth day of the experiment by
Water Hyacinth, Water Lettuce and Coontail, Pb concentration
was 3.42 mg L-1 and reduced to 0.00 mg L-1 on eighteenth day
by Water Hyacinth and Coontail and 0.00 mg L-1 on twenty
fourth day by Water Lettuce, concentration of Cr was 3.73 mg
L-1 decreased to 0.00 mg L-1 on eighteenth day by Water
9. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
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Hyacinth and Coontail and 0.00 mg L-1 on twenty fourth day by
Water Lettuce, concentration of Zn was 2.66 mg L-1which was
reduced to 0.00 mg L-1 by Coontail on sixth day and by Water
Hyacinth and Water Lettuce on eighteenth day, while the
concentration of Cd was 3.33 mg L-1 and efficiently reduced to
0.00 mg L-1 on eighteenth day by Water Lettuce and Coontail
and gradually by Water Hyacinth on twenty fourth day of the
experimental period.
A rapid reduction in Cu concentration was observed in
effluent samples collected after six days (Fig. 1). Relatively
more reduction in metal concentration was observed in effluent
treated with Coontail than that of other two aquatic plants and
was from 3.5 mg L-1 to 2.5 mg L-1 during first six days. It was
further reduced to 1.68 mg L-1 after 12 days, rapid removal of
Cu concentration in first six days and then gradual decrease
was observed until the concentration reduced to 0.05 mg L-1
that was within the safer limits (1.0 mg L-1) on twenty forth
day.
Similar metal removal trend was observed for Ni where
initially it was removed exponentially by low concentration in
effluent sample collected after six days. Relative large reduction
in metal concentration was observed in effluent treated with
Water Lettuce. While, Water Hyacinth and Coontail aquatic
plants decreased the Ni concentration from 3.7 mg L-1 to 2.4 mg
L-1 and 2.06 mgL-1 during first six days, respectively (Fig. 2)
that was in the safer limits of wastewater disposal (1.0 mg L-1)
and was significantly (P <0.05) further reduced to 0.01 mg L-1
when the sample was collected on twelfth day. It was observed
to be 0.00 mg L-1 on 24th day.
Linear reduction of Pb concentration in effluent was
observed over the experimental period (Fig. 3). Relative faster
removal was observed in the effluent treated with Coontail and
Water Lettuce than that of Water Hyacinth. After 12 day,
Water Lettuce and Coontail decreased the Pb concentration
from 3.31 to 1.5 mg L-1 and 0.85 mg L-1, respectively. The metal
10. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
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was reduced to safer limits (0.5 mg L-1) of wastewater disposal
before the eighteenth day and was further reduced to below
detectable limits. Water Hyacinth and Coontail showed almost
similar metal removal trend over the experimental period.
However, Water Hyacinth metal removal rate was slower and
took 24 days to bring effluent Pb concentration below the
permissible limits (Fig. 3).
All the three aquatic plants tests showed different Cr
removal trend from Cu, Ni, and Pb. Initially, a rapid decrease
was observed in Cr concentration of effluent sample collected
after six and twelve days. Rather, more rapid reduction in Cr
concentration was observed in effluent where Coontail aquatic
plants were grown and the concentration was significantly (P
<0.05) reduced from 3.81 to 1.12 mg L-1 only after six days.
Almost all the Cr was removed from effluents by the aquatic
plants on eighteenth day of the experiment below detectable
limits. After 12 days, a gradual decrease in Cr concentration of
effluent was observed. Water Hyacinth and Water Lettuce
progressively reduced metal concentration from the effluent
from 3.8 mg L-1 and 3.7 mg L-1 to 2.02 mg L-1 and 2.16 mg L-1
after six days respectively and reduced the metal concentration
to standard level after six day to 0.21 mg L-1 and 0.13 mg L-1
respectively (Fig. 5).
Zinc extraction by Water Hyacinth was faster than
extraction by Water Lettuce and Coontail and the Zn
concentration was dropped to <0.03 mg L-1 after 6 days before
the permissible limits of the wastewater disposal (2.0 mg L-1)
(Fig. 6). Further, Zn removal by Water Lettuce dropped from
2.5 to <0.1 mg L-1 only after 6 days. After 12 days, a gradual
decrease in metal concentration was observed between 6 to 12
days. After 12 days no further reduction in Zn effluent
concentrations was observed in all treatments. Cadmium
removal behavior by Water Hyacinth, Water Lettuce and
Coontail was different than the rest of the metals. However,
there was a linear reduction in Cd concentration in the effluent
11. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
Phytoremedial Potential of Aquatic Plants for Heavy Metals Contaminated
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sample till 12 days in all treatments (Fig. 7). Maximum metal
reduction was observed in the effluent treated with Coontail
and concentration was reduced from 3.33 to 1.71 mg L-1 after 6
day. It was further reduced to 0.39 mg L-1 after 12 days.
Similarly, Water Hyacinth and Water Lettuce reduced metal
concentrations from 3.26 to 2.69 mg L-1 and from 3.27 to 2.76
mg L-1, respectively. The Cd concentration of effluent was
reduced to the safer limits (0.1 mg L-1) by Coontail after 12 days
and by Water Hyacinth and Water Lettuce after 18 days,
respectively.
ii) Heavy Metal Concentration in Phytoremedial
Plants
The metal concentration in Water Hyacinth, grown on the
metal contaminated industrial effluent increased exponentially
at earlier stages of the experiment. This was obvious from the
chemical analysis of Water Hyacinth shoot samples collected
after 6 and 12 days after initiation of experiment. Maximum Cu
concentration was observed in Water Hyacinth plant samples
collected on 24 day (8.44 mg kg-1), and on 6 day the Cu
concentration was 5.95 mg kg-1, on twelve day it was 4.12 mg
kg-1 and on eighteenth day it was 7.23 mg kg-1 (Fig. 8a).
Copper accumulation by Water Lettuce was very slow at
initial stages of experiment. The Cu concentration was
increased to 9.77 and to 23.97 mg kg-1 on 6 and 12 day of the
sample, but highest concentration was observed in Water
Lettuce samples collected on 24th day, i.e. 57.84 mg kg-1 (Fig.
8b). Coontail aquatic plants grown on contaminated effluent
showed incremental Cu accumulation till 18 day, i.e. 2239 mg
kg-1, 2626 mg kg-1, and 2785 mg kg-1 on 6, 12, and 18 days after
transplanting, respectively. However, slight reduction was
observed on 24th day (Fig. 8c).
Significantly higher amount of Ni was observed in Water
Hyacinth shoot samples collected on 6 day (32.34 mg kg-1) and
12 day (27.33 mg kg-1) of the experiment than that of rest of the
12. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
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sampling (Fig. 9a). Afterwards, reduction in Ni concentration of
Water Hyacinth was observed, 13.31 mg kg-1 and 5.13 mg kg-1
after 18 and 24 days of transplanting, respectively.
The Ni concentration in Water Lettuce shoot samples
collected on 6th day was significantly higher than those of the
shoot samples collected on 12th, 18th and 24th days. Maximum
Ni concentration (81.52 mg kg-1) was observed in Water Lettuce
shoot samples collected after six day. Then reduction in Ni
concentration was observed in shoot samples collected on
twelfth (29.68 mg kg-1), eighteenth (4.43 mg kg-1) and twenty
forth day (29.63 mg kg-1) (Fig. 9b).
Initially an increase in Coontail Ni concentration was
observed as 304.63 mg kg-1 after 6 day and 523.92 mg kg-1.
While maximum concentration (523.92 mg kg-1) was observed
on 12th day sampling (Fig. 9c). However, significantly lower Ni
concentration was observed on 18 day (166.41 mg kg-1) and 24
day (115.66 mg kg-1) than the 6 day and 12 day. Similar trend
in the accumulation of Pb by both Water Hyacinth and Water
Lettuce was observed (Fig. 10a &10b). The concentration of Pb
was observed on the 6th day (37.03 mg kg-1) by the Water
Hyacinth plant was significantly higher than those plant
samples collected on 12th day (14.94 mg kg-1), 18th day (20.95 mg
kg-1) and 24th day (16.79 mg kg-1) (Fig. 10a).
Maximum amount of Pb accumulated (64.31 mg kg-1) by
Water Lettuce was observed on the sixth day. Then there was
significant reduction in Pb accumulation in following
samplings, i.e. 44.32, 22.34, 40.49 mg kg-1 on twelve, eighteen
and twenty fourth day, respectively (Fig. 10b). Significantly
(P<0.05) higher concentration of Pb was observed in Coontail
samples collected on sixth 399.18 (400 mg kg-1) and twelfth day
(400 mg kg-1) than those of collected on eighteenth day (222.24
mg kg-1) and twenty fourth day (174.89 mg kg-1) (Fig. 10c).
Significant (P<0.05) increase in the accumulation of Cr
was observed in Water Hyacinth shoot samples as compared to
other two aquatic plants used in this experiment. The
13. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
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concentration of Cr observed in shoot samples collected after
sixth day was 12.68 mg kg-1 and on twenty fourth day was 17.89
mg kg-1. Water Hyacinth showed maximum Cr concentration on
twenty fourth day with comparison to other aquatic plants
during the experimental period (Fig. 11a). Similarly,
concentration of Cr in Water Lettuce observed after sixth day
was 39.33 mg kg-1, followed by 21.06, 39.01, and 82.11 mg kg-1
on twelve, eighteenth, and twenty fourth days, respectively
(Fig. 11b). However, highest Cr concentration was observed in
Coontail shoot samples collected after six days (586.37 mg kg-1)
and a significant increase was seen in the metal concentration
as the days passed. The highest concentration was observed on
the twenty fourth day i.e. 1931.65 mg kg-1 followed by 929.11
mg kg-1 and 1454.43 mg kg-1 on twelve and eighteenth day of
the experiment, respectively (Fig. 11c).
Similar Zn accumulation by Water Hyacinth was
observed after 6, 12, 18 and 24 days during the experiment.
Concentration of Zn was 34.2 mg kg-1 on twelfth day, 34.5 mg
kg-1 on eighteenth day and 33.4 mg kg-1 on twenty forth day
(Fig. 12a). Relative higher (but non -significantly (P<0.05)) Zn
concentration was observed on sixth day in plants samples
(40.3 mg kg-1).
Concentration of Zn observed in Water Lettuce on sixth,
twelfth and eighteenth day of the experiment was 60.54, 61.08
and 64.45 mg kg-1, respectively. Maximum concentration of the
metal was observed on twenty fourth day in the plants samples
(Fig. 12b). It was observed that Zn accumulation was
statistically similar in Coontail plant samples collected on 6th,
12th and 18th day. While statistically lower Zn accumulation
was observed in plant samples collected on 24th day than 6th
and 12th day. The Coontail shoot Zn concentration was 750.3 mg
kg-1 on six day and was 766.93 mg kg-1 on twelfth day. Slightly
less concentration, i.e. 641.87 mg kg-1 and 533.12 mg kg-1 was
observed on eighteenth and twenty fourth days, respectively
(Fig. 12c).
14. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
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Variation was observed in the concentration of Cd in
Water Hyacinth after six days. Cd concentration was observed
as 46.74, 20.27, and 33.3 mg kg-1 on sixth, twelfth and twenty
forth day, respectively. Maximum concentration was observed
on eighteenth day (64.2 mg kg-1) as shown in Fig. 13a.
Significant (P<0.05) increase of Cd concentration was observed
in Water Lettuce i.e. 97.43, 191.55 and 292.36 mg kg-1 on six,
twelve and eighteenth day, respectively. Maximum Cd
concentration was observed on the twenty fourth day 768.01 mg
kg-1 (Fig. 13b).
Subsequent Cd metal concentration was observed in
Coontail after six days 4536.53 mg kg-1 and slowly the
accumulation decreased after eighteen days 4879.86 mg kg-1.
Maximum concentration of Cd was observed on twelfth day in
sampled plants i.e. 5701.46 mg kg-1. The least metal
concentration was observed on twenty fourth day 896.88 mg kg-
1 as shown in Fig. 13c.
The total metal removed by Water Hyacinth, Water
Lettuce and Coontail from the effluent of Fuse Shop C-12,
Pakistan Ordinance Factory, Wah Cantt illustrated in Fig. 16.
Coontail showed more removal of Ni (78.1 g-20L), Pb (67.1 g-20L),
Cr (76.1 g-20L), Zn (50.3 g-20L), Cd (70.5 g -20L) and Cu (73.7 g-20L)
than Water Hyacinth and Water Lettuce. Whereas, Water
Hyacinth removed higher Ni (64.5 g-20L), Pb (63.2 g-20L) and Cr
(68.4 g-20L) than Water Lettuce. While Water Lettuce removed
more Zn (39.8 g-20L) than Water Hyacinth.
IV- Discussion
An exponential reduction in the heavy metals concentration
was observed in effluent samples collected after six days from
the plastic tubs where all the aquatic plants were grown.
Relatively more reduction in Cu concentration (from 3.5 to 2.5
mg L-1) was observed in effluent where Coontail were grown
during first six days. Whereas Cu concentration effluent treated
15. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
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with Coontail was remain fairly constant during the first twelve
days, while Coontail treated effluent showed maximum Cu
reduction during the first twelve days and effluent Cu
concentration was brought within the permissible limits (1.0
mg L-1). Nickel is an essential element for the ecosystems at low
concentrations while high concentration is considered as
harmful and toxic pollutant. The phytoremediation study
indicates that Coontail rapidly removed the Ni during first six
days. The reduction (from 3.7 to 2.06 mg L-1) of the Ni
concentration in the Coontail treated effluent was observed
during first six days. Results showed that Coontail lowered
utmost concentration of Ni from the polluted effluent which is
in line with the observation of Parneyan et al. (2011). Similar
results of Ni concentration reduction in industrial effluent
treated with Coontail have also been reported by Mjelde and
Faafeng (1997).
Similar to Cu and Ni reduction, decrease in Pb
concentration of effluent treated with Coontail was also more
than those treated with Water Hyacinth and Water Lettuce.
Maximum and rapid removal was observed in Coontail grown
effluent which decreased the Pb concentration from 3.31 to 2.14
mg L-1 and to 0.85 mg L-1 after six and twelve days,
respectively. Mishra et al. (2006) reported that when Coontail
plants exposed to Pb contaminated effluent for 1 to 7 days, most
of the metal was removed only after one day. The results
revealed that plants accumulated high amounts of metal.
Rapid decrease was observed in Cr concentration in effluent
sample collected after six day. The metal concentration was
decreased from 3.81 to 1.12 mg L-1 by Coontail and Cr
concentration increased considerably in Coontail plant. Garg
and Chandra (1990) showed a much higher concentration of Cr
in Coontail after 48 hours. They observed almost leaner Cr
concentration increase in Coontail when grown on effluent of
increased Cr concentration, i.e. at a 0.05 ppm effluent
16. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
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concentration it was 117.7 ± 1.20 μg/g, at 0.1 ppm 160.87 ± 0.51
μg/g, and at 1.0 ppm 216.32 ± 0.91 μg/g.
Cadmium pollution of water bodies is alarming, because
it is a supplementary constituent and hinders plant
development upon accumulation. From the investigated results
it was found that rapid removal of Cd concentration from the
industrial effluent sample was observed after six days.
Relatively more reduction was observed in the effluent by
Coontail i.e. 3.33 to 1.71 mg L-1 followed by 0.39 mg L-1. The
observed results are similar to (Seema, 2008) study conducted
for the phyto-remediation of polluted effluent by growing
Coontail (C. demersum). It was observed that Cd removal was
dependent on the plant exposure to concentration. The highest
accumulation of Cd, 1293 µg g-1 dry weight, was found at 10
microM, after 7 days of time. Plants illustrated noteworthy
activities and act as an indicator for the environmental
contaminants, for hazardous heavy metals or phytotoxins.
Zinc was removed by Coontail at slower rate and
concentration was reduced from 2.52 to 0.45 mg L-1 after sixth
day. The slow removal of Zn from the effluent may be due to the
high concentration of Cd in the effluent that is confirmed by the
earlier results reported by Bunluesin et al. (2007). They
observed that high concentration of Cd in the effluent decreased
the Zn removal. Water Hyacinth was observed to be a relatively
better phyto-remedial aquatic plant for Cu, Cd, Zn and Pb
polluted industrial effluents. In the first twelve days the metal
removal was fairly low and it reduced the Cu (3.55 mg L-1), Cd
(3.26 mg L-1), Zn (2.66 mg L-1) and Pb (2.4 mg L-1) concentration
to 2.01 mg L-1, 2.15 mg L-1, 0.36 mg L-1 and 1.3 mg L-1,
respectively, on the twelfth day. Zhu et al. (1999) and Vesk et
al. (1999) showed similar results of removing metals from
industrial effluent treated with Water Hyacinth. However, in
present study for Ni and Cr showed that Water Hyacinth plant
removed substantial amount of Ni and Cr from the effluent and
reduced the concentration from 3.7 to 2.4 mg L-1 and 2.02 mg L-1
17. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
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in first six days which was relatively at slower rate. Similar
results of metal concentration removal from the heavy metal
contaminated effluent treated with Water Hyacinth was also
reported by Stratford et al., 1984; Yahya, 1990; Abd- Elhamid,
1996.
Water Lettuce was found to have the great ability to
remove the Cr, Cu, Fe, Mn, Ni, Pb, and Zn (Lu et al. 2011) and
results were in line with the observations made during this
study. The reduction observed in Cu (3.55 mg L-1), Pb (3.42 mg
L-1), Cr (3.73 mg L-1 ) and Cd (3.27 mg L-1 ) concentration to 2.84
mg L-1, 1.91 mg L-1, 2.16 mg L-1 and 2.76 mg L-1 on twelfth day,
respectively. Similar results were reported by Mishra et al.
(2008) and Mokhtar et al. (2011) that Water Lettuce has the
ability to remove heavy metals (Fe, Zn, Cu, Cr and Cd) from the
effluent. The growth of Water Lettuce reduced the Ni and Zn
concentration from 3.7 and 2.31 to 1.8 mg L-1 and 0.10 mg L-1,
respectively, in first six days of the experiment. The removal of
Ni was very slow as compared to Zn and gradually reduced to
0.0 mg L-1 on the twelfth day of the experiment and was within
permissible limits (1.0 mg L-1). These results confirmed the
results reported by Ernst et al. (1992) that Water Lettuce when
exposed to high Ni concentrations removed large amount of Ni
from effluent.
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Table 1. Chemical Parameters of Fuse Shop C-12, Pakistan Ordinance
Factory Effluent
Table 2. Initial Heavy Metal Concentrations of Fuse Shop C-12,
Pakistan Ordinance Factory Effluent
Heavy Metals
Observed Concentration *
Permissible Limits of
Effluent**
(mg L-1)
Copper 3.35 1.00
Nickel 3.81 1.00
Lead 3.42 0.50
Chromium 3.73 1.00
Zinc 2.66 2.00
Cadmium 3.33 0.10
Average of 6 replicates, ** USEPA (1998)
Figure 1. Periodic Reduction in Cu Concentration of Treated
Industrial Effluent by Water Hyacinth, Water Lettuce and Coontail
Parameters Unit Value
pH -- 7.35
Electrical Conductivity dS m-1 0.53
CO3 mg L-1 0.28
HCO3 mg L-1 1.13
Ca + Mg mg L-1 1.68
Na mg L-1 3.45
K mg L-1 0.78
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Figure 2. Periodic Reduction in Ni Concentration of Treated
Industrial Effluent by Water Hyacinth, Water Lettuce and Coontail
Figure 3. Periodic Reduction in Pb Concentration of Treated
Industrial Effluent by Water Hyacinth, Water Lettuce and Coontail
Figure 4. Periodic Reduction in Cr Concentration of Treated
Industrial Effluent by Water Hyacinth, Water Lettuce and Coontail
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Figure 5. Periodic Reduction in Zn Concentration of Treated
Industrial Effluent by Water Hyacinth, Water Lettuce and Coontail
Figure 6. Periodic Reduction in Cd Concentration of Treated
Industrial Effluent by Water Hyacinth, Water Lettuce and Coontail
25. Uzma Majeed, Iftikhar Ahmad, Mahmoodul Hassan, Ashiq Mohammad-
Phytoremedial Potential of Aquatic Plants for Heavy Metals Contaminated
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Figure 8. Copper Concentration in Aquatic Plants Grown on Effluent
of Pakistan Ordinance Factory, Wah Cantt: (a) Water Hyacinth, (b)
Water Lettuce and (c) Coontail.
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Phytoremedial Potential of Aquatic Plants for Heavy Metals Contaminated
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Figure 9. Nickel Concentration in Aquatic Plants Grown on Effluent
of Pakistan Ordinance Factory, Wah Cantt: (A) Water Hyacinth, (B)
Water Lettuce and (C) Coontail
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Phytoremedial Potential of Aquatic Plants for Heavy Metals Contaminated
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Figure 10. Lead Concentration in Aquatic Plants Grown on Effluent
of Pakistan Ordinance Factory, Wah Cantt: (a) Water Hyacinth, (b)
Water Lettuce and (c) Coontail.
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Phytoremedial Potential of Aquatic Plants for Heavy Metals Contaminated
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Figure 11. Chromium Concentration in Aquatic Plants Grown on
Effluent of Pakistan Ordinance Factory, Wah Cantt: (a) Water
Hyacinth, (b) Water Lettuce and (c) Coontail.
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Phytoremedial Potential of Aquatic Plants for Heavy Metals Contaminated
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Figure 12. Zinc Concentration in Aquatic Plants Grown on Effluent of
Pakistan Ordinance Factory, Wah Cantt: (a) Water Hyacinth, (b)
Water Lettuce and (c) Coontail.
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Phytoremedial Potential of Aquatic Plants for Heavy Metals Contaminated
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Figure 13. Cadmium Concentration in Aquatic Plants Grown on
Effluent of Pakistan Ordinance Factory, Wah Cantt: (a) Water
Hyacinth, (b) Water Lettuce and (c) Coontail
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Figure 16. Total Metals Removed by Water Hyacinth, Water Lettuce
and Coontail from the Heavy Metal Contaminated Effluent of Fuse
Shop C-12, Pakistan Ordinance Factory, Wah Cantt