Abstract
The recovery of silver from ammonia chelated silver alkaline waste water, COD removal from acetate waste water and electricity production in a dual chamber bio-electrochemical cell was investigated. The results indicated that pure silver could be deposited on cathode with over 99.9% silver ions removed from the catholyte while over 83% COD could be removed from anolyte simultaneously. As a result, the maximum electricity of 3.2J and 160C charges could be produced and 1.6g Ag could be recovered on the cathode when 1g COD was removed from the anolyte in the bio-electrochemical cell.
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