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Arsenic is a common natural contaminant of well water and is highly carcinogenic. Iron oxide adsorption treatment for arsenic in groundwater is a commonly practiced removal process which involves the chemical treatment of arsenic species such that they adsorb onto iron oxides and create larger particles that may be filtered out of the water stream.
The Sono arsenic filter was invented in 2006 by Abul Hussam, who is a chemistry professor at George Mason University (GMU) in Fairfax, Virginia. It was developed to deal with the problem of arsenic contamination of groundwater . [ 1 ]
Doctor of Science (D.Sc.) by University of Dhaka in 2009.; Professor Hussam was awarded one of the highest engineering prizes known as the 2007 Grainger Challenge Prize for Sustainability from the US National Academy of Engineering (NAE) for the Sono arsenic filter which is now used by thousands of people in the affected areas of Bangladesh, Nepal, and India.
The legal action represents a challenge to a segment of the industry that produces wines that consumers can buy for less than $10 a bottle.
Ion exchange has long been used as a water softening process, although usually on a single-home basis. Traditional anion exchange resins are effective in removing As(V), but not As(III), or arsenic trioxide, which doesn't have a net charge. Effective long-term ion exchange removal of arsenic requires a trained operator to maintain the column.
The Grainger challenge is a scientific competition to find an economical way to remove arsenic from arsenic-contaminated groundwater.This competition is being funded by the United States National Academy of Engineering and the Grainger Foundation and is meant to help provide safe drinking water to countries such as Bangladesh, India, and Cambodia.
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