Fluoride and Arsenic in Ground water.
Causes for groundwater pollution.
Fluoride in groundwater , sources for fluoride , Health implications.
Arsenic in groundwater , sources for arsenic , Health implications.
Classification either on quality or type based for groundwater can offer great advantages especially in regional groundwater management. It provides a short, quick processing, interpretation for a lot of complete hydro-chemical data sets and concise presentation of the results. There is a demonstrable need for a quality assurance, with the advanced usage of world's largest fresh water storage i.e Ground water. Its getting depleted over the years and the quality of the same degrading with a rapid pace. Ground water Quality is assessed mainly by the chemical analysis of samples. The data obtained from the chemical analysis is key for the further classification, analysis, correlation etc. Graphical and Numerical interpretation of the data is the main source for Hydro-chemical studies. In this paper we test the performance of the many available graphical and statistical methodologies used to classify water samples including: Collins bar diagram, Stiff pattern diagram, Schoeller plot, Piper diagram, Durov's Double Triangular Diagram, Gibbs's Diagram, Stuyfzand Classification. This paper explains various models which classify, correlate etc., summarizing the water quality data. The basic graphs and diagrams in each category are explained by sample diagrams. In addition to the diagrams an overall characterization of hydro-chemical facies of the water can be carried out by using plots which represents a water type and hardness domain. The combination of graphical and statistical techniques provides a consistent and objective means to classify large numbers of samples while retaining the ease of classic graphical presentation.
A presentation on Hydrothermal wall rock alteration with case studies on geophysical applications.
References : https://drive.google.com/drive/folders/16VSZMPMASMNVB47JdBUa_7udBk1qvK2U?usp=sharing
Kerala state is having abundant water source and people are really proud of it and lavishly wastes water.But due to the uprising scarcity of good potable drinking water we should think about conserving water before polluting the sources.This presentation is a description about the water scenario in India briefly and describes about the major water pollution and the main regions that are being affected severely.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Classification either on quality or type based for groundwater can offer great advantages especially in regional groundwater management. It provides a short, quick processing, interpretation for a lot of complete hydro-chemical data sets and concise presentation of the results. There is a demonstrable need for a quality assurance, with the advanced usage of world's largest fresh water storage i.e Ground water. Its getting depleted over the years and the quality of the same degrading with a rapid pace. Ground water Quality is assessed mainly by the chemical analysis of samples. The data obtained from the chemical analysis is key for the further classification, analysis, correlation etc. Graphical and Numerical interpretation of the data is the main source for Hydro-chemical studies. In this paper we test the performance of the many available graphical and statistical methodologies used to classify water samples including: Collins bar diagram, Stiff pattern diagram, Schoeller plot, Piper diagram, Durov's Double Triangular Diagram, Gibbs's Diagram, Stuyfzand Classification. This paper explains various models which classify, correlate etc., summarizing the water quality data. The basic graphs and diagrams in each category are explained by sample diagrams. In addition to the diagrams an overall characterization of hydro-chemical facies of the water can be carried out by using plots which represents a water type and hardness domain. The combination of graphical and statistical techniques provides a consistent and objective means to classify large numbers of samples while retaining the ease of classic graphical presentation.
A presentation on Hydrothermal wall rock alteration with case studies on geophysical applications.
References : https://drive.google.com/drive/folders/16VSZMPMASMNVB47JdBUa_7udBk1qvK2U?usp=sharing
Kerala state is having abundant water source and people are really proud of it and lavishly wastes water.But due to the uprising scarcity of good potable drinking water we should think about conserving water before polluting the sources.This presentation is a description about the water scenario in India briefly and describes about the major water pollution and the main regions that are being affected severely.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Fluoride Contamination Status of Ground Water & Quality Management in Parts o...BK SAHOO, GEOLOGIST,GWS&I
High fluoride concentration in ground water has been reported in Begunia, Bolagarh blocks of Khurda district and Bhapur Block of Nayagarh District, Orissa. Preliminary geological & geochemical studies were carried out to trace the source of fluoride in ground water.
Effect of Magnesium on Fluoride RemovalIJRES Journal
Fluorides in drinking water are known for both beneficial and detrimental effects on health. The fact that the problems associated with the excess fluorides in drinking water is highly endemic and widespread in countries like India prompted many researchers to explore quite a good number of both organic and inorganic materials adopting various processes from coagulation, precipitation through adsorption, Ion exchange etc. for fluoride removal. Some are good under certain conditions while others are good in other conditions. Leaching of Fluoride from the earth crust is the chief source of fluoride content in ground water; however the other sources like food items also add to increase the overall ingestion of fluoride into the human body. The soil at foot of the mountains is particularly likely to be high in fluoride from the weather and leaching of bed rock with a fluoride. The present paper aims to encompass the work carried out by various researchers in various fluoride affected areas and to access the effectiveness of using magnesium for fluoride removal.\
Environmental science Module 2 Topic. This PPT is not a work of mine and was provided by our college professor during our graduation, so I am not sure about the original author. The credit goes to the Original author.
Hydro-geologically induced diseases in SrilankaHome
Geology of Srilanka is influenced to ground water and it can affect the quality of water. So, hydro-geologically induced diseases are mainly affected by the geological conditions. This gives a brief explanation about hydro-geologically induced diseases in Srilanka, where much people in the country depend on Ground water for drinking purpose.
a review study on fluoride toxicity in water and fishes current statusIJEAB
Fluoride is widely distributed in nature in many forms and its associated compounds have been used extensively but its limit in water is exceeding the permissible level. Excess of fluoride (>1.5 mg/l) in drinking water is harmful to the health. Fluoride toxicity is increasingly becoming a matter of great concern as many countries in the world have been declared as endemic for fluoride. This makes it imperative for scientists to focus on the precise toxic effects of fluoride on various soft tissues. Fluoride is toxic to all the system and causes oxidative stress in various tissues. When fluoride is ingested, approximately 93% is absorbed into the bloodstream. Contamination of drinking water due to fluoride is a severe health hazard problem. A good part of the material is excreted but the rest is deposited in the bones and teeth and is capable of causing a crippling skeletal fluorosis, non-skeletal fluorosis and dental fluorosis. There are various treatment technologies for removing fluoride from groundwater but these methods are very expensive. Besides using the water treatment techniques, various plants are having therapeutic properties to reduce the fluoride toxicity which is a cost effective to cure the fluoride induced toxicity.
Welcome to International Journal of Engineering Research and Development (IJERD)IJERD Editor
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Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
1. PROBLEMS OF
ARSENIC & FLUORIDE IN GROUNDWATER
KRISHNAPRASAD PK
1st MSC APPLIED GEOLOGY
UNIVRSITY OF CALICUT
2. GROUND WATER
“Water that exists beneath the earth’s surface in
underground stream and aquifers is known as
groundwater”. Groundwater is considered as the major
source of drinking water in most places on earth. Usually
people use groundwater for drinking and other domestic
household purposes
3. CAUSE OF GROUNDWATER POLLUTION
AGRICULTURE FIELD: Pesticides, herbicides, fertilizers .
CITY DUMP: Rain can also leach pollutants from city dumps
into groundwater supplies.
INDUSTRY : Heavy metals such as mercury, lead, chromium,
copper, and cadmium, together with household chemicals
and poisons, can all be concentrated in ground-water
supplies beneath dumps
• Liquid and solid wastes from septic tanks, sewage plants,
and animal feedlots and slaughterhouses may contain
bacteria, viruses, and parasites that can contaminate ground
water.
• MINING AREA: Acid mine drainage from coal and metal
mines can contaminate both surface and ground water.
• RADIOACTIVE WASTE : It can cause the pollution of ground
water due to the shallow burial of low-level solid and liquid
radioactive wastes from the nuclear power industry.
4. Fluoride and Arsenic are the two main contaminants in
groundwater present naturally in
INDIA
CHINA
BANGLADESH IN SOUTH ASIA,
causing a set of health symptoms known commonly as
FLUOROSIS and ARSENICOSIS.
For many rural areas where hand-pumps and tube-wells are
the only source of safe drinking water, these two contaminants
have emerged to cause a serious crisis threatening public
health
5. Groundwater with fluoride concentration above the permissible limit set by
WHO i.e 1.5 mg/l have been recorded in several parts of the world.
In 1984, WHO estimated that more than 260 million people living all over the
world consume water with fluoride concentration above 1 mg/l .
The problem of high fluoride in groundwater has been reported by several
researchers in India, China, Japan, Sri Lanka, Iran, Pakistan, Turkey, Southern
Algeria, Mexico, Korea, Italy & Brazil.
Most of the people affected by high fluoride concentration in groundwater live
in the tropical countries where the per capita consumption of water is more
because of the prevailing climate. In places like Ghana, people consume 3 to 4
liters of water which is higher than the WHO estimate of 2 l/adult/day .
The intensity of fluorosis problem is very serious in the two heavily populated
countries of the world namely India and China .
FLUORIDE IN GROUNDWATRER
6. The possible causes and sources through which fluoride exists in the environment are
schematically
7. Aquifer material
Most of the fluoride in groundwater is naturally present due to weathering of
rocks rich in fluoride. Water with high concentration of fluoride is mostly found in
sediments of marine origin and at the foot of mountainous areas .
Volcanic ash
Volcanic rocks are often enriched in fluoride. Hydrogen fluorine is one of the most
soluble gases in magmas and comes out partially during eruptive activity .
Fly ash
Like volcanic ash, fly ash from the combustion of fossil fuels also account for
high fluoride. More than 100 to 150 million tons of fly ash is produced worldwide
annually due to the combustion of coal especially from power plants .
Fertilisers
Phosphate containing fertilisers add up to the fluoride content in soil and
groundwater
SOURCES FOR FLUORIDE IN GROUNDWATER
8. HEALTH IMPLICATIONS
Intake of fluoride higher than the optimum level is the main reason for dental
and skeletal fluorosis.
when fluoride concentration in drinking water is below 0.5 mg/l it causes
dental carries; fluoride between 0.5 to 1.5 mg/l results in optimum dental
health; 1.5 to 4 mg/l causes DENTAL FLUOROSIS;
4 to 10 mg/l induces dental and SKELETAL FLUOROSIS
while fluoride above 10 mg/l results in CRIPPLING FLUOROSIS.
OTHER EFFECTS
Other health disorders that occur due to consumption of high fluoride in
drinking water to be muscle fibre degeneration, low haemoglobin levels,
deformities in RBCs, excessive thirst, headache, skin rashes, nervousness,
neurological manifestations, depression, gastrointestinal problems, urinary
tract malfunctioning, nausea, abdominal pain, tingling sensation in fingers and
toes, reduced immunity, repeated abortions or still births, male sterility,
9. DENTAL FLUOROSIS : Very high incidences of
dental and in some cases skeletal fluorosis
mainly caused by excessive fluoride in
drinking water.
SKELETAL FLUOROSIS:
It affects young as well as old.
The symptoms include severe pain and
stiffness in the backbone, joints and/or
rigidity in hip bones.
RADIOGRAPH OF A PATIENT
OF SKELETAL FLUOROSIS
12. The Indian Ministry of Water Resources informs that several districts of 9 states are
affected by high Fluoride concentrations (greater than 1 mg/l) in groundwater.
Fluorosis is an endemic disease prevalent in 20 states out of the 35 states and
Union Territories of the Indian Republic.
Rajasthan and Gujarat in North India and Andhra in South India are worst affected.
Bihar, National Capital Territory of Delhi, Haryana, Jharkhand, Karnataka, M.P. and
Maharashtra are moderately affected.
T.N., W.B., U.P., Bihar and Assam are mildly affected.
Throughout India fluorosis is essentially Hydrofluorosis except in parts of Gujarat
and U.P. where industrial fluorosis is also seen.
FLUOROSIS IN INDIA
14. • Naturally occurring metalloid element in the earth’s crust
• Released to the environment by natural pathways
volcanic emissions
biological activities
weathering reactions
ARSENIC IN GROUNDWATER
15. • Released to the environment by human activities
burning high-arsenic coal
arsenic mining
CCA-treated wood (chromated copper arsenic)
arsenic-containing pesticides and herbicides
• Arsenic is an element that CANNOT be destroyed. It can only change
from one form to another
16. HEALTH IMPLICATIONS
Various types of skin manifestations and other arsenic toxicity were
observed from melanosis , keratosis , hyperkeratosis, dorsal keratosis, and
non pitting edema to gangrene and cancer.
Keratosis is the hardening skin bulges on palms
and feet
17. It can also result in decreased production of red and white blood cells
which may cause fatigue, abnormal heart rhythm, blood-vessel damage
resulting in bruising, and impaired nerve function.
Other signs and symptoms include skin thickening, fluid accumulation
(resulting in puffiness) especially around the lower eyelids, face and ankles,
diarrhea, garlic breath, perspiration, excessive salivation, generalized itching,
oral inflammation, sore throat, runny nose, excessive tearing, numbness, skin
inflammation, hair loss, weakness, and loss of appetite.
Arsenic can also cause a range of neurological effects, including headaches
and vision problems.
18. Over 30 countries in the world is affected by
arsenic in drinking water
19. ARSENIC IN INDIA,
the groundwater arsenic contamination was first surfaced from West-Bengal in
1983,
a number of other States, namely; Jharkhand, Bihar, Uttar Pradesh in flood
plain of the Ganga River; Assam and Manipur in flood plain of the
Brahamaputra and Imphal rivers, and Rajnandgaon village in Chhattisgarh
state have chronically been exposed to drinking arsenic contaminated hand
tube-wells water above permissible limit of 50 μg/L.
Even with every additional survey, new arsenic affected villages and people
suffering from arsenic related diseases are being reported.
All the arsenic affected river plains have the river routes originated from the
Himalayan region.
21. Adsorption/Ion Exchange: Through adsorption, fluoride ions are collected
on the surface of the adsorbant; in ion exchange, fluoride ions would be
removed from solution onto the ion exchange resin in exchange for a less
problematic ion.
Chemical: By chemical reaction with fluoride, the fluoride is bound in the
solution, it would then require removal from solution.
Precipitation/Sedimentation: Employed along with chemical reaction to
remove particles, such as flocculants, from solution.
Filtration: This method can be used in to remove particles, such as
flocculants or bacteria from solution .
THE REMOVAL OF FLUORIDE
22. Surface Water Treatment
Biosand Filter
Slow sand filter adapted for
intermittent use for a household
THE REMOVAL OF ARSENIC
Potter for Peace Filter
Pass water through a porous,
colloidal silver soaked ceramic
container. Small pores and silver traps
and inactivates pathogens.