IN-SITU PAIRED ELECTROOXIDATIVE DEGRADATION OF FORMALDEHYDE WITH ELECTROGENERATED HYDROGEN-PEROXIDE AND HYPOCHLORITE ION

Formaldehyde was degraded with hydrogen peroxide and hypochlorite ion electrogenerated by paired electrolysis of dissolved oxygen and chlori de ion in aqueous solution. Degradation of formaldehyde in the cathodi c compartment was significantly affected by the ratio of electrolyte v olume to cathodic surface area, oxygen sparging rate and stirring rate . The model calculations correlated sufficiently well with the experim ental results. The average current efficiency and degradation fraction of the in situ paired electrooxidative degradation of formaldehyde we re experimentally found to be 62.0% and 93.2%, respectively.