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About: Iron oxide adsorption     Goto   Sponge   NotDistinct   Permalink

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Iron oxide adsorption is a water treatment process that is used to remove arsenic from drinking water. 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. 3H2O + FeCl3 → Fe(OH)3 + 3HCl The filter media usually consists of anthracite, iron-manganese oxidizing sand, and garnet sand over support gravel.