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This document discusses heavy metal pollution of soil in China. It covers the definition of heavy metals, the current state of soil heavy metal pollution, characteristics of heavy metal pollution including persistence and bioaccumulation, sources of heavy metal pollution from atmospheric deposition, wastewater, waste and agricultural chemicals, hazards of heavy metal pollution to soil resources, human health and agriculture, methods to control pollution including engineering, biological and chemical approaches, and agricultural and ecological restoration methods to remediate contaminated soil.
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HEAVY METAL POLLUTION AND REMEDIATION IN URBAN AND PERI-URBAN AGRICULTURE SOILS
Throughout the world, there is a long tradition of farming intensively within and at the edge of cities (Smit et al., 1996). However, most of these peri-urban lands are contaminated with pollutants including heavy metals, such as Cu, Zn, Pb, Cd, Ni, and Hg. The major sources of heavy metal contamination in agricultural soils are discharge of effluents from domestic sources, coal-burning power plants, non-ferrous metal smelters, iron and steel plants, dumping of sewage sludge and metal chelates from different industries. Once the heavy metals are released into soils, plants can absorb and bio-accumulate these heavy metals and thereby affect humans and animals’ health upon consumption (Seghal et al., 2014). Hence, there is a great need to develop effective technologies for sustainable management and remediation of the contaminated soils. There are conventionally physicochemical soil remediation engineering techniques, such as soil washing, incineration, solidification, vapour extraction, thermal desorption, but they destroy the plant productive properties of soils. Moreover, they are usually extremely expensive, limiting their extensive application, particularly in developing countries and for remediation of agricultural soils (Kokyo et al., 2014). Phytoremediation has been increasingly receiving attentions over the recent decades, as an emerging, affordable and eco-friendly approach that utilizes the natural properties of plants to remediate contaminated soils (Wang et al., 2003). Phytoremediation includes phytovolatilization, phytostabilization, and phytoextraction using hyper-accumulator species or a chelate-enhancement strategy. The future of this technique is still mainly in the research phase, and many different Hyperaccumulators and crops that can be cultivated in heavy metal contaminated are still being tested.
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This document discusses various heavy metal removal processes from soil and wastewater. It describes techniques for soil remediation including immobilization, soil washing, phytoremediation, and electroremediation. For wastewater treatment, it outlines chemical precipitation, ion exchange, adsorption, membrane filtration, coagulation/flocculation, and flotation. The key advantages and disadvantages of each technique are provided.
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Vegetables are grown all over the world for human needs and proper supply nutritional supplement. Recently due to various anthropogenic activities such as mining, industrialization and agricultural activities like application of pesticides, fungicides and fertilizers, heavy metals are released in to the atmosphere, soil and water. These released heavy metals enter into the plant system through various physiological processes and it affects the plant growth and development. The concentration of heavy metals in the environment varies due to various activities and it becomes toxic when it reaches above the permissible limits. Accumulation of heavy metals occurs only when the vegetable crops are exposed to heavy metal contaminated environment, thus it enters into the food chain. When these heavy metals contaminated vegetables are consumed by human beings it causes various severe health ailments. In order to reduce the heavy metal toxicity, proper remediation steps have to be carried out in soil and irrigation water. Before consumption of any vegetables washing has to be done to reduce the adhered heavy metal particulates and through these simple steps we can remove the heavy metal adhered on the vegetable surface.
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This document discusses various heavy metal removal processes from soil and wastewater. It describes techniques for soil remediation including immobilization, soil washing, phytoremediation, and electroremediation. For wastewater treatment, it outlines chemical precipitation, ion exchange, adsorption, membrane filtration, coagulation/flocculation, and flotation. The key advantages and disadvantages of each technique are provided.
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Vegetables are grown all over the world for human needs and proper supply nutritional supplement. Recently due to various anthropogenic activities such as mining, industrialization and agricultural activities like application of pesticides, fungicides and fertilizers, heavy metals are released in to the atmosphere, soil and water. These released heavy metals enter into the plant system through various physiological processes and it affects the plant growth and development. The concentration of heavy metals in the environment varies due to various activities and it becomes toxic when it reaches above the permissible limits. Accumulation of heavy metals occurs only when the vegetable crops are exposed to heavy metal contaminated environment, thus it enters into the food chain. When these heavy metals contaminated vegetables are consumed by human beings it causes various severe health ailments. In order to reduce the heavy metal toxicity, proper remediation steps have to be carried out in soil and irrigation water. Before consumption of any vegetables washing has to be done to reduce the adhered heavy metal particulates and through these simple steps we can remove the heavy metal adhered on the vegetable surface.
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- Heavy metals like lead, cadmium, arsenic, chromium, and mercury are toxic even in small amounts and can accumulate in the food chain.
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Any toxic metals may be called heavy metals.
Since heavy metals have a propensity to accumulate in selective body organs.
The average safety levels in food or water are often misleading high.
Heavy is any metal or metalloid of environmental concern.
Heavy metals are metallic element that have relatively high density usually greater than 5 g/cm3, or their density is greater than the density of water.
Effect of Heavy Metals on Plants
A heavy metal is toxic when relatively it is dense metal or metalloid that is noted for its potential toxicity, especially in environmental contexts.
Heavy metal toxicity means excess of required concentration or it is unwanted which were found naturally on the earth, and become concentrated as a result of human caused activities.
Then enter in plant, animal and human tissues via inhalation, diet and manual handling, and can bind to, and interfere with the functioning of vital cellular components.
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This document summarizes the effects of heavy metals in the environment on plant physiology. It discusses how industrialization and mining have increased heavy metal levels and how plants uptake metals through their roots and foliage. It then examines the physiological effects on plants, including cellular interactions where metals are stored, transport mechanisms using proteins, impacts on metabolism like oxidative stress, and effects on photosynthesis, reproduction, and hyperaccumulation. The document concludes that understanding plant uptake and resistance strategies could help with phytoremediation and addressing metal deficiencies in foods.
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Phytoremediation is a low cost and effective soil
treatment option for metal reclamation. The use of plants to
remove heavy metals from soil is the phytoremediation. Heavy
metals are among the most dangerous substances in the
environment because of their high level of persistence and
harmfulness to living organisms. The present study in the field
deals with phytoremediation of heavy metals from contaminated
soil around Steel industry at Boisar Industrial area, using Indian
mustard (Brassica juncea L.) plant. The impact of addition of
chelating agents like EDTA (Ethylenediamine tetraacetic acid)
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were investigated. Mustard plants were grown in soil around
steel industry. The results indicated significant reduction of
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The average safety levels in food or water are often misleading high.
Heavy is any metal or metalloid of environmental concern.
Heavy metals are metallic element that have relatively high density usually greater than 5 g/cm3, or their density is greater than the density of water.
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A heavy metal is toxic when relatively it is dense metal or metalloid that is noted for its potential toxicity, especially in environmental contexts.
Heavy metal toxicity means excess of required concentration or it is unwanted which were found naturally on the earth, and become concentrated as a result of human caused activities.
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The document discusses heavy metals, which are defined as metallic elements that are relatively dense and toxic in low concentrations. Common heavy metals include aluminum, antimony, arsenic, barium, bismuth, cadmium, lead, mercury, nickel, uranium, and tin. Heavy metals enter the human body through food and water. While some heavy metals like iron and zinc are essential nutrients, others such as cadmium and lead are highly toxic even in small amounts. Sources of heavy metal exposure include mining, industrial waste, vehicle emissions, and food/water contamination. The document provides details on specific heavy metals like cadmium, chromium, arsenic, and lead, their sources, and health effects.
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treatment option for metal reclamation. The use of plants to
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metals are among the most dangerous substances in the
environment because of their high level of persistence and
harmfulness to living organisms. The present study in the field
deals with phytoremediation of heavy metals from contaminated
soil around Steel industry at Boisar Industrial area, using Indian
mustard (Brassica juncea L.) plant. The impact of addition of
chelating agents like EDTA (Ethylenediamine tetraacetic acid)
and Citric acid on the bioaccumulation efficiency of the plant
were investigated. Mustard plants were grown in soil around
steel industry. The results indicated significant reduction of
metals in the soil and increased accumulation in biomass. EDTA
proved better than citric acid in extraction of metals from the
soil. Order of percentage phytoextraction by plant was Fe+2 >Cd
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The term heavy metal refers to any metallic chemical element that has a relatively high density and is toxic or poisonous at low concentrations.
Heavy metals are Globally distributed
pollutants
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Heavy metals and its effects on plants and environment
Heavy metal in the environment and effect on plant physiology
Heavy metal in the environment and effect on plant physiology
Removal of heavy metals (Cr, Cd, Ni and Pb) using fresh water algae (Utricula...
Removal of heavy metals (Cr, Cd, Ni and Pb) using fresh water algae (Utricula...
ROLE OF SYNTHETIC CHELATORS IN PHYTOREMEDIATION OF HEAVY METALS BY INDIAN MUS...
ROLE OF SYNTHETIC CHELATORS IN PHYTOREMEDIATION OF HEAVY METALS BY INDIAN MUS...
Bioremediation of toxic heavy metals (th ms) contaminated sites.2020
Bioremediation of toxic heavy metals (th ms) contaminated sites.2020
IRJET - Heavy Metal in Contaminated Soils: A Review of Sources, Risk and ...
IRJET - Heavy Metal in Contaminated Soils: A Review of Sources, Risk and ...
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Mercury and heavy metal pollution
Heavy metals such as mercury, cadmium, and lead are naturally occurring but are also released from industrial and other human activities. They persist indefinitely in the environment and can accumulate in living organisms, posing health risks. Mercury is a liquid metal used historically in products like thermometers and batteries but now regulated. It evaporates easily and bioaccumulates as the toxic methylmercury in fish. Exposure can cause neurological, kidney, and developmental problems. While an essential element for life, mercury becomes toxic and dangerous at higher levels.
Plasma Technology In Metallurgy & Metal Working Industry
Presentation on Plasma Technology Uses In Metallurgy & Metal Working Industry By Mr. Arun Kumar (Managing Director - Technocrats Plasma Systems Private Limited).
Aqueous elemental pollution
This presentation discusses aqueous pollution caused by heavy metals. It defines heavy metals and lists some common heavy metals that cause water pollution, including cadmium, lead, mercury, aluminum, antimony, arsenic, zinc, copper, nickel, tin, and uranium. The sources of heavy metal pollution are identified as mines, smelters, power plants, vehicle emissions, and electronic waste. Several methods for purifying water from heavy metal pollution are described, such as chemical precipitation, ion exchange, reverse osmosis, and biosorption. The health effects of various heavy metals like arsenic, cadmium, and mercury are outlined.
preparation of aspirin
The document discusses the preparation and synthesis of aspirin. Aspirin, also known as acetylsalicylic acid, is synthesized through the esterification reaction of salicylic acid and acetic anhydride. This reaction converts the hydroxyl group of salicylic acid into an ester group, yielding aspirin and acetic acid as a byproduct. A small amount of sulfuric or phosphoric acid is used as a catalyst. The document also outlines the history, uses, and potential side effects of aspirin.
Aspirin
This document provides information on the synthesis, purification, characterization, and analysis of aspirin. It begins with background on aspirin and its biological activity. The document then reviews the relevant organic chemistry concepts and outlines the procedure for synthesizing aspirin through the esterification of salicylic acid and acetic anhydride. Methods for purifying the product include recrystallization and testing purity through analysis of physical properties, solubility, melting point, IR spectroscopy, percent yield, and chemical tests.
“Applications Of Powder Metallurgy In Reference with Cutting tools”
Powder metallurgy is used for manufacturing products or articles from powdered metals by placing these powders in molds and are compacting the same using heavy compressive force. Typical examples of such article or products are grinding wheels, filament wire, magnets, welding rods, tungsten carbide cutting tools, self-lubricating bearings electrical contacts and turbines blades having high temperature strength. The manufacture of parts by powder metallurgy process involves the manufacture of powders, blending, compacting, profiteering, sintering and a number of secondary operations such as sizing, coining, machining, impregnation, infiltration, plating, and heat treatment.
Chemistry of Aspirin
presentation is based on mainly the chemistry of aspirin,A little bit introduction about nsaid is also here.The uses,doses and side effects are also in these presentation.
NMR Spectroscopy
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Aspirin synthesis ppt
Acetylsalicylic acid, also known as aspirin, is a common analgesic, antipyretic, and anti-inflammatory drug. Aspirin was first isolated in 1897 by Felix Hoffmann working for Bayer. It is synthesized from salicylic acid and acetic anhydride. Aspirin works by inhibiting prostaglandin production. It has a long history of medicinal use and is effective for pain, fever reduction, and reducing heart attack risk. Common side effects include gastrointestinal irritation.
Sponge Iron Industry
This document summarizes a summer internship project on pollution from coal-based DRI plants. It provides background on DRI production, noting it is a method to produce solid iron from iron oxide without coking coal. DRI production in India has increased significantly in recent years. The document outlines the DRI process and inputs/outputs, identifying particulate matter, SO2, NOx, and CO as main pollutants. It discusses regulatory air pollution standards and water usage at DRI plants. In summary, it analyzes pollution sources from coal-based DRI production and the impact on the surrounding environment.
Aspirin
Aspirin is the common name for acetylsalicylic acid, which is used as a non-steroidal anti-inflammatory drug (NSAID) to relieve pain, reduce fever, and minimize swelling. It is also used as an anti-platelet drug to prevent blood clots and as a preventative measure for heart conditions. Aspirin is available over the counter and commonly used for headaches, colds, flu, and preventative heart care, though it can have gastrointestinal side effects.
Presentation aspirin
Aspirin is the common name for acetylsalicylic acid, a medicine that relieves pain and reduces fever. It was first used in Europe in 1899 when a German chemist named Felix Hoffman developed it as a treatment for his father's arthritis. Aspirin works by blocking prostaglandins, which are chemicals that cause pain and fever in the body. It is produced through a process that involves weighing, mixing, and compressing its active ingredients along with fillers and lubricants into tablet form before packaging. While aspirin is still commonly used to treat minor pains, its popularity has declined somewhat with the release of alternatives like paracetamol and ibuprofen.
Mine, mine, mine powerpoint presentation
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Mining and environmental impact
Mining involves extracting ore from the earth through surface, underground, or solution mining methods. Ore is then processed through beneficiation techniques like crushing, grinding, separation based on magnetic or physical properties to extract the desired mineral. The concentrated ore is then smelted to separate the metal from waste rock. Environmental concerns from mining include pollution from waste rock and tailings disposal, acid mine drainage, subsidence from underground mining, air pollution from smelting operations, and contamination of water and land from chemicals used.
Mining
1. Mining involves extracting valuable minerals and materials from the earth. Common methods are surface mining, which removes overburden, and underground mining using shafts or tunnels.
2. Surface mining techniques include placer mining for deposits close to the surface, strip mining which removes overburden, and mountaintop removal which levels entire mountains. Underground mining uses drifts, slopes, or shafts to access deep materials.
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Industrial pollution
This document discusses different types of industrial pollution including air, water, noise, thermal, and radioactive pollution. It defines each type of pollution, provides causes and effects, and discusses prevention methods. The types of pollution are caused by industries, automobiles, domestic fuels, effluents, oil spills, sewage, nuclear power plants, weapons, and uranium mining. Effects include harm to ecosystems, health issues, and environmental degradation. The document recommends treating effluents, minimizing water and resource use, noise proofing machines, and proper nuclear waste treatment and disposal to prevent pollution.
Mining ppt 2014
This document discusses various mining methods including surface mining techniques like alluvial mining and open-cast mining as well as underground mining techniques. It describes alluvial mining methods like using pans, rockers, and sluicing. For open-cast mining it discusses loading by hand or machine and different open-cast mining methods. Underground mining techniques discussed include room and pillar mining, open stoping methods using timber supports or waste filling, shrinkage stoping, and caving methods like top slicing and block caving.
Review of structural analysis
This document provides an overview of structural analysis presented by Hassan Abba Musa. It defines structural analysis as predicting the response of a structure to various loads. Loads are classified as dead loads from the structure's weight and imposed loads like wind and seismic forces. Structural analysis ensures equilibrium, displacement compatibility, and force-displacement relationships. Different structural elements, analysis techniques, and matrix operations are also introduced.
Noise Pollution
Noise Pollution is defined as any undesirable human or machine created noise which disturbs human or animal activity or balance. It is measured in decibels (dB) which is a logarithmic ratio of sound pressures. Prolonged exposure to loud noise can cause permanent hearing loss, annoyance, stress, and disrupted sleep and human performance. Noise pollution affects animals through hearing loss, physiological stress, and disruption of behavior and ecosystems. Plants are also impacted through reduced growth. Control measures include reducing noise at the source through improved machinery and mufflers, zoning of industrial areas away from homes, sound insulation of buildings, use of ear protection, legislative bans on loud noises, and planting trees.
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Plasma Technology In Metallurgy & Metal Working Industry
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Heavy metals.pptx
Heavy metals are metallic elements that are toxic or poisonous even in small amounts. Examples include mercury, cadmium, arsenic, chromium, and lead. Heavy metals enter soils through natural processes and human activities like industry and agriculture. In soils, heavy metals can harm plant growth and contaminate the food chain. While some heavy metals like zinc and nickel are important in small amounts for plant nutrition, others like mercury and arsenic are highly toxic even in low doses and can persist in soils for a long time.
contaminantes naturales
La causa más importante de la contaminación es la acción humana. Entre los principales factores tenemos la producción con tecnologías que dejan desechos en el ambiente, el consumo excesivo, la sobreexplotación de recursos, y la falta de control sobre la emisión de ruidos, ondas magnéticas, radiación u otras externalidades negativas.
Soil Pollution
Soil,Soil Pollution, Sources of Soil Pollution,
Effects Of Soil Pollution,
Control Of Soil Pollution,
Physically Control of Soil Pollution,
Chemically Control of Soil Pollution,
Thermally Control of Soil Pollution ,
Biologically Control of Soil Pollution
Organic and inorganic Pollutants in Soil by Abdul Aleem Memon.
This document discusses organic and inorganic pollutants in soils. It notes that heavy metals such as cadmium, lead, chromium, copper, zinc, mercury and arsenic are present in soils due to industrial discharges and sewage sludge. Heavy metal levels are increased by industry, agriculture, waste incineration, fossil fuel combustion and road traffic. Pollution of agricultural soils by heavy metals can lead to reduced crop yields and their introduction into the food chain. The document also discusses nitrogen, phosphorus and pesticides as organic pollutants in soils, and their negative effects such as eutrophication and destruction of soil microorganisms.
Soil Pollution: A Hidden Reality
Soil pollution can be caused by both natural and anthropogenic sources. There are two main types of soil pollution: point-source pollution, which has an identifiable source, and diffuse pollution, which is spread over a wide area from multiple sources. Major anthropogenic sources of soil pollution include industrial activities, mining, urban and transportation infrastructure, waste and sewage disposal, military activities, and agriculture. Common soil pollutants include heavy metals, salts, pesticides, and other chemicals that can harm soil quality, ecosystems, and human health.
BIOTRANSFORMATION OF HEAVY METALS metal impact of heavy metals
It's a basic knowledge about Biotransformation of heavy metal impact of heavy metals
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Credit Seminar on "Soil Contamination: Risk Assessment and Remediation"
The document is a seminar presentation on soil contamination. It begins with an introduction and overview of topics to be covered, including the definition of soil contamination, sources and causes, risk assessment, remediation, case studies, and conclusion. It then goes into detail on various sources of soil contamination such as sewage, heavy metals, pesticides, and urbanization. The risks from contamination are assessed based on toxicity, reactivity, and other factors. Remediation methods include physical removal, chemical fixation, and biological options like phytoremediation.
Heavy metal pollution in soil ecosystem.pptx
Contamination of heavy metals results in soil acidification and subsequently affects other soil properties.
Contamination of heavy metals causes a decline in the specific adsorption of other cations through an increase in saturation or oversaturation of the cation exchange sites by heavy metal cations, thus displacing the protons into the soil solution, which results in a significant drop in soil pH.
Three different pathways in which enzyme activities are inhibited by heavy metals:
masking of catalytically active groups;
denaturation of protein conformation; and
competition with heavy metals for enzyme–substrate complexes.
Soluble forms of heavy metals (Ag, Cu, Hg and Zn) are considered to be more toxic to enzyme activities (urease, dehydrogenase and acid phosphatase) due to their high bioavailability.
Impact of Soil Pollution n Human healh and Crop Yield.pptx
Soil is a vital component of the environment that supports life on our planet but with the increase in industrial activities, agricultural practices, and improper waste disposal, soil pollution has become a major threat to crop yield and human health.
Soilpollution 140224102442-phpapp02
Soil is composed of mineral matter, organic matter, and living organisms in which plants grow. Soil pollution is the undesirable change in physical, chemical, and biological characteristics of soil that are harmful to living beings. Major causes of soil pollution include agricultural pesticides, disposal of solid wastes on land, mining activities, biological agents, radioactive pollutants, and heavy metals. Pesticides, fertilizers, and industrial wastes can reduce soil fertility and contaminate groundwater if not properly managed. Adopting sustainable agriculture practices like organic farming and composting can help reduce soil pollution.
A1304539646_21901_25_2017_BIOREMEDIATION OF HEAVY METAL POLLUTED SOIL.ppt
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Environmental Topic : Soil Pollution by Afzalul Hoda.pptx
Presented by Afzalul Hoda
M.Sc. in Environmental Science and Currently working as Environmental Specialist.
The presentation includes the following topics;
1. What is Soil?
2. Pedogenesis Or Soil Formation
3. Soil Horizon Or Layer of Soil
4. Pollution and Soil Pollution
5. Types of Soil Pollution
6. Source of Soil Pollution
7. Effects of Soil Pollution
8. Prevention of Soil Pollution
Ecological effects of soil pollution and it’s management.pptx
This document discusses ecological effects of soil pollution and its management. It begins by defining soil pollution as any undesirable changes to the physical, chemical, or biological properties of soil that are harmful. It then discusses major causes of soil pollution like use of chemicals, soil erosion, industrial and urban waste, and radioactive waste. The effects of soil pollution include threats to human health, economic losses, air and water contamination, and negative impacts on plant life. Control measures proposed include reducing chemical usage, waste treatment, and bioremediation techniques. The document stresses the lack of specific legislation around soil pollution regulation.
2_Effects of Human activities.pptx
The document discusses several adverse effects of various human activities on the environment including agriculture, housing, industrialization, mining, transportation and their key impacts. Agriculture can cause soil degradation through erosion, and water contamination from fertilizer and pesticide runoff. Housing development leads to loss of natural resources and pollution from building materials. Industrial activities result in air and water pollution, depletion of resources from mining, and greenhouse gas emissions. Mining degrades land, forests and water bodies. Transportation burns fossil fuels causing air pollution and greenhouse gas emissions. Environmental impact assessments are used to evaluate impacts of development projects and activities to select more sustainable alternatives.
Soil pollution
Soil pollution occurs when undesirable materials are added to soil, damaging organisms and reducing land usability. Common pollutants include petroleum, heavy metals, pesticides, and excess fertilizers from industrial, agricultural, and urban activities. Soil pollution affects agriculture, ecosystems, and human health. Methods to control soil pollution include reducing chemical use, recycling waste, reforestation, soil washing, and land farming to stimulate microbial breakdown of contaminants. Long-term effects of unchecked soil pollution include reduced soil fertility, crop yields, and ecosystem changes.
CONTAMINATION OF SOILS WITH ORGANIC AND INORGANIC POLLUTANTS (Mashooq hussain...
The document discusses soil contamination from organic and inorganic pollutants. Some key causes of soil pollution include corrosion of underground storage tanks, application of fertilizers and pesticides, mining, oil dumping, landfill leachate, and direct industrial waste discharge. The most common contaminants are petroleum hydrocarbons, solvents, pesticides, and heavy metals like lead. Soil pollution adversely impacts humans, animals, agriculture, and urban environments. Control methods include restricting plastic waste, encouraging recycling, banning deforestation, and optimizing fertilizer and pesticide use.
An Analysis and Study in Light of Phytoremediation of Heavy Metal Contaminate...
The document discusses phytoremediation, which uses plants to remediate soil contaminated with heavy metals. Heavy metal contamination of soil is a growing problem due to industrialization. Conventional remediation methods are often costly. Phytoremediation uses plants and microbes to remediate soil in a cost-effective and environmentally friendly way. It discusses different types of phytoremediation technologies including phytoextraction, phytotransformation, phytostimulation, phytostabilization, and phytovolatilisation. The document provides examples of plants used in phytoremediation and their ability to uptake different heavy metals.
Bioavailability of heavy metals in sediment C.U.EBONG
The document discusses the bioavailability of heavy metals in marine ecosystems. It explains that heavy metals can accumulate in marine organisms and food chains, eventually making their way to humans. Some key points made include that heavy metals are toxic even at low concentrations, can enter marine environments through various sources of pollution, and have various negative effects on marine organisms and ecosystems.
Soil pollution
This document summarizes a presentation on soil pollution given by Dudhe Gaurav ChandraShekhar. It defines soil and pollution, then discusses the major causes of soil pollution including agricultural pesticides, solid waste disposal, mining activities, biological agents, radioactive pollutants, and heavy metals. Specific impacts of these pollutants are outlined such as declining soil fertility from overuse of inorganic nutrients or intensive tillage. Solutions proposed include adopting sustainable organic farming practices, improved industrial and urban waste management, controlled use of toxins, recycling wastes, and safe disposal of biomedical waste. The presentation stresses reducing excess use of chemical fertilizers and pesticides.
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Organic and inorganic Pollutants in Soil by Abdul Aleem Memon.
Organic and inorganic Pollutants in Soil by Abdul Aleem Memon.
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Impact of Soil Pollution n Human healh and Crop Yield.pptx
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A1304539646_21901_25_2017_BIOREMEDIATION OF HEAVY METAL POLLUTED SOIL.ppt
A1304539646_21901_25_2017_BIOREMEDIATION OF HEAVY METAL POLLUTED SOIL.ppt
Environmental Topic : Soil Pollution by Afzalul Hoda.pptx
Environmental Topic : Soil Pollution by Afzalul Hoda.pptx
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Ecological effects of soil pollution and it’s management.pptx
CONTAMINATION OF SOILS WITH ORGANIC AND INORGANIC POLLUTANTS (Mashooq hussain...
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Bioavailability of heavy metals in sediment C.U.EBONG
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The document discusses biodegradation of polyacrylamide by bacteria isolated from sewage sludge. It first provides background on polyacrylamide and issues with its degradation. It then outlines the research methods, which will involve screening and separating strains from activated sludge that can degrade polyacrylamide at different concentrations over time. The expected results are to isolate some bacteria strains from sludge that can efficiently degrade polyacrylamide.
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Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
Iván Bornacelly, Policy Analyst at the OECD Centre for Skills, OECD, presents at the webinar 'Tackling job market gaps with a skills-first approach' on 12 June 2024
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