Title: Selective removal of chlorine from solutions of chlorine dioxide and chlorine
Application Number: 87107550 Application Date: 1987.10.28
Publication Number: 1018272 Publication Date: 1988.05.11
Approval Pub. Date: 1993.04.07 Granted Pub. Date: 1993.04.07
International Classifi-cation: C01B11/02;C25B1/26
Applicant(s) Name: Tenneco Canada Ltd. Address:
Inventor(s) Name: Marek Lipsztajn
Attorney & Agent: QI ZENGDU
Abstract:
    Chlorine is selectively cathodically electrolytically removed from aqueous solutions of chlorine dioxide and chlorine by the application of an electrode potential at a pH of the aqueous solution of up to about 4. Chlorine is electrolytically reduced to chloride ions while the concentration of the chlorine dioxide remains substantially the same in the treated solution. The chlorine reduction is effected directly at pH values up to about 2 using a low overpotential cathode and indirectly at pH values up to about 4 using a high overpotential cathode.
Time: 4