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Arsenic Removal - Tran Nathaniel Arsenic Removal Methods 1...

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Tran, Nathaniel Arsenic Removal Methods- 1 - Arsenic removal techniques range from simple sand column filters to very advanced, expensive membrane filtration systems. Many developing areas of the world, namely Bangladesh and poor areas of India, are in great need of a cheap and effective arsenic removal solution. Developing nations are the primary focus of this discussion; therefore the water treatment methods discussed are primarily very cheap and easy to use. Arsenic poisoning is caused by exposure to arsenic, a naturally occurring element that is found throughout the earth’s crust. When arsenic containing minerals and rocks are eroded, they release arsenic into the water, and contaminate surrounding groundwater. Arsenic is commonly found in fossil fuels and commercial products such as alloying agents and wood preservatives. Common ways of developing arsenic poisoning are prolonged drinking of contaminated water, exposure to arsenic due to occupational hazards, and aerial exposure from the decomposition of arsenic containing materials or the combustion of arsenic containing fuels. Arsenic poisoning kills victims through allosteric inhibition of essential metabolic enzymes , resulting in multiple organ failure. Symptoms differ for long term exposure poisoning and acute poisoning. Acute poisoning results in vomiting, stomach pain, and diarrhea. Long term exposure to arsenic in drinking water causes cancer of the skin, lungs, kidney, and urinary bladder. Long term exposure to arsenic also causes changes in skin pigmentation and hyperkeratosis, a condition that causes thickening of the skin. Other reported symptoms are hypertension, cardiovascular disease, diabetes, disease of the blood vessels leading to gangrene, and reproductive effects (World Health Organization 2.) One of the most serious epidemics of arsenic poisoning is currently taking place in West Bengal, India. It is reported that over fourteen thousand cases of arsenicosis have been reported in this one state alone. One of the largest problems faced by West Bengal is the lack of publicity that the problem is receiving. The government of India has not kept the population informed about the arsenic poisoning problem, therefore the people of West Bengal do not know there is a major crisis occurring, let alone know ways to treat the problem. The government has initiated a five hundred million dollar clean water program that includes the installment of large water treatment facilities that will be able to provide clean water for 70% of the population. The program also incorporates the distribution of cheap domestic-use filters. This program will alleviate the crisis to a
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Tran, Nathaniel Arsenic Removal Methods- 2 - certain extent, but without providing readily available information to the public, people will not know how to protect themselves against arsenic poisoning ( Bhattacharjee 1.) When comparing different arsenic removal techniques, there is a focus on feasibility. The objective of
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