Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1980-10-24
1982-06-29
Tufariello, T. M.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
204152, 204180P, C02F 146
Patent
active
043371299
ABSTRACT:
Spent aqueous hexavalent chromium solutions containing trivalent chromium ions and extraneous metal ions are oxidized by placing said exhausted Cr.sup.+6 solution in the anode compartment of an electrolytic cell as the anolyte, said cell being separated into anode and cathode compartments by at least one cation selective membrane, said cathode compartment containing a catholyte, and impressing a direct current across the anode and cathode of said cell of a difference in potential sufficient to promote the oxidation of trivalent chromium in the solution in said anode compartment to hexavalent chromium while extraneous metal ions in the anolyte solution migrate through said membrane into the catholyte of said cathode compartment where copper ions are plated onto said cathode. The anode compartment consists of a removable and portable container consisting essentially of a framework having side members secured thereto, at least one of said anode members comprising a cation selective membrane.
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Cochran Andrew A.
Soboroff David M.
Troyer Jerry D.
Brown William S.
Gardiner Donald A.
The United States of America as represented by the Secretary of
Tufariello T. M.
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