Sterling Pulp Chemicals, Ltd.

Superior Plus Inc.

George Joseph Ranger

Marek Lipsztajn

Gerald Cowley

Darren Francis Lawless

Yuri Alexeevich Omelchenko

Ronald K Schaible

Ty V Tran

Ron K Schaible

Chlorine dioxide is produced at high conversion rates from aqueous sodium chlorite solution by electrochemical oxidation in an undivided electrochemical cell. The cell utilizes an anode of high surface area through which the aqueous sodium chlorite solution flows into an interelectrode gap between the anode and a cathode. Water or acidified water is fed into the interelectrode gap to function as catholyte and also to dilute the electrolyzed sodium chlorite solution to provide an aqueous solution of chlorine dioxide exiting from the electrochemical cell.

Electrolytic process for the production of chlorine dioxide

Chlorine dioxide is generated by electrochemical oxidation of sodium chlorite in an anode compartment of a cation-exchange membrane-divided cell in the presence of significant quantities of sodium chlorate and is recovered in a suitable recipient medium by passing the chlorine dioxide through a hydrophobic microporous membrane. Water balance in a continuous operation is maintained by removing water from the anolyte by transporting the same partly across the hydrophobic microporous membrane in vapor form and partly across the cation-exchange membrane.

Chlorine dioxide generation for water treatment

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Mississauga, Canada

George Joseph Ranger