Treatment of Hexavalent Chromium at Local Plating ShopJan 11 2014 Super User
Conventionally when we need to remove hexavalent chromium out of solution we first need to reduce it from hexavalent to trivalent form.
Conventionally to treat hexavalent chromium we need to reduce it from hexavalent to trivalent form, this is in order to precipitate it as a hydroxide. Cr(OH)3 has a solubility product constant of 6.3 x 10-31 making it feasible to precipitate out of solution. Hexavalent chromium cannot be precipitated out of solution, is simply too soluble so it likes to remain in solution.
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