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Showing 1 to 16 of 16 for “"arsenic in drinking water"”.
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Arsenic in drinking water caused ultra-structural damage in urinary bladder but did not affect expression of DNA damage repair genes or repair of DNA damage in transitional cells
Arsenic is a human carcinogen associated with urinary bladder transitional cell carcinoma and other cancers. Arsenic is also a strong comutagen and cocarcinogen. One possible mode of action for arsenic carcinogenesis/cocarcinogenesis is inhibition of DNA damage repair. In laboratory animals, …
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Arsenic, antimony and visceral leishmaniasis
In Bihar state, India, the cure rate of antimonial compounds in the treatment of visceral leishmaniasis (VL) has declined from over 85% to less than 50%. This has been attributed to prolonged, widespread misuse of antimonials within the Indian private healthcare system. An alternative resistance …
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Removal of Arsenic Using Iron Coated Limestone
<p>Arsenic contamination in drinking water is a severe problem worldwide. The best way to prevent hazardous diseases from chronic arsenic exposure is to remove the exposure. Efforts to remediate arsenic in drinking water have taken two tracks. One is to provide surface or shallow well water sources …
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Reducing Lead and Selenium from Drinking Water Using Limestone-based Material
<p>Contamination of drinking water with metals is a major problem facing many areas of United States and the World. There is a need for an inexpensive remediation technology for the removal of metals in drinking water that can be applied to small rural water systems. This research will focus on the …
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Self-assembled optical diffraction sensor for water quality monitoring : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Engineering, Massey University, Albany, New Zealand
Water contamination is one of the current global issues; the freshwater sources being extremely restricted are causing a drinking water crisis in many countries. An increase in water contamination continuously decreases water quality. Generally, water pollution includes pathogenic, nutrients, and …
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Information as an Environmental Policy Instrument: Examining Household Response to Arsenic in Tube-Well Water in Araihazar, Bangladesh
<p>This dissertation examines the potential of information-provision in motivating behavior that reduces human exposure to arsenic in drinking-water in Bangladesh. In chapter 2, the longer-term effects of the countrywide arsenic-testing and information-program are examined by tracking tube-well …
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Removal of Heavy Metals Using Modified Limestone Media: Zinc and Cadmium
<p>Heavy metal contamination is a serious concern throughout the world. Increased concentrations in drinking water have many negative impacts on human health. Limestone is an inexpensive and simple media for removing high concentrations of heavy metals from drinking water supplies. Ferric based …
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The adsorption of arsenic (V) by iron (Fe2O3) and aluminum (Al2O3) oxides
<p>Arsenic(As), one of most toxic contaminants found in water, is well known to have adverse effects on human health, such as skin cancer. The consumption of arsenic contaminated water has led to human health crises in many countries such as Bangladesh, China and even the western USA. The new EPA …
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Sources of arsenic and lead in drinking water of Eastport, Perry, and Pleasant Point, Maine
Lead and arsenic in drinking water are a health risk to communities throughout the world; lead can be a problem in houses with old piping systems with either lead piping or 50/50 lead solder, and groundwater in Maine contains high arsenic concentrations. This study sought to determine the …
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The Influence of Water Quality on Arsenic Sorption and Treatment Process Performance
… that would lower the acceptable level of arsenic in drinking water from the current standard of 50 ppb. Therefore, research into effective arsenic removal treatment is important, especially for hard to treat waters with high concentrations of silica. The first phase of research was …
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Arsenic Stability In Fresh and Aged Amorphous Ferric Hydroxide Sludges Generated from Brine Treatment Processes
Using Environmental Protection Agency occurrence and concentration data, it is estimated that about 6 million pounds of arsenic-bearing residuals (ABSR) will be generated annually in the United States when full compliance with the new standard for arsenic in drinking water (10 μg/L) is realized. …
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Exposure, telomere length, and cancer risk
… chromosomes. Telomeres play a key role in chromosome stability and regulation of the cellular lifespan. Telomeres are shortened during cell division, and probably, by not yet well characterised factors in the environment. Short telomeres in peripheral blood have repeatedly been …
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Investigating metal exposure on the general populace of the copper mining town of Kitwe, Zambia
… economy is highly dependent on the copper mining industry for foreign export. It is well established that copper mining contributes to significant elevated metals in the environment, hence increasing the risk of metals exposure to human populations living in and around mining areas. Recent …
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Microbial Oxidation of Arsenite in Anoxic Environments: Impacts on Arsenic Mobility
AbstractArsenic (As) contamination of groundwater and surface water is a worldwide problem. Exposure to arsenic in drinking water is an important current public health issue. Arsenic is well known for its carcinogenic and teratogenic effects. The U.S. Environmental Protection Agency (USEPA) has …
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Synthesis and potential application of Fe3+/Mn2+ bimetal and hexadecyltrimethylammonium bromide (HDTMA-Br) modified clayey soils for arsenic removal in groundwater
The presence of arsenic in groundwater has drawn worldwide attention from researchers and public health officials due to its effects on human health such as, cancer, skin thickening, neurological disorders, muscular weakness, loss of appetite and nausea. World Health Organisation (WHO) has set the …