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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 ]
He has spent much of his career trying to devise a solution to the problem of arsenic contamination of groundwater in eastern India and Bangladesh. Hussam initially started working on this problem in 1993. [1] His final innovation is a simple, maintenance-free system that uses sand, charcoal, bits of brick and shards of a type of cast iron.
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.
Arsenic is also a common n-type dopant in semiconductor electronic devices, and a component of the III–V compound semiconductor gallium arsenide. Arsenic and its compounds, especially the trioxide, are used in the production of pesticides, treated wood products, herbicides, and insecticides. These applications are declining with the ...
A double-edged sword: 40% of homeowners in the US wouldn’t be able to afford their homes if buying today — how some are stuck, while others are laughing all the way to the bank Moneywise May ...
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