Electrochemical reduction of hexavalent chromate to the insoluble trivalent chromium salts has been an established process.  However, high conductivity, high pH, high suspended solids, and/or organic contamination could foul electrode surfaces, resulting in loss of chromate removal capacity and high operator maintenance.  A new electrolytic process has been developed which overcomes these problems and shows additional advantages over the old type process actual operating data is presented along with an economic evaluation of the new process.

84-19: An Innovation in Chromate Removal


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