Js. Do et Wc. Yeh, IN-SITU DEGRADATION OF FORMALDEHYDE WITH ELECTROGENERATED HYPOCHLORITE ION, Journal of Applied Electrochemistry, 25(5), 1995, pp. 483-489
The oxidant ClO- was generated on an SPR (SnO2-PdO-RuO2-TiO2) anode an
d used to degrade formaldehyde in aqueous solution. The current effici
ency of the production of hypochlorite ion was significantly affected
by the concentration of chloride ion, pH and stirring rate. The effect
of current density and temperature on the current efficiency for elec
trogeneration of hypochlorite ion was slight. The maximum anodic curre
nt efficiency was 99.3% when 100 C was charged. Increasing the concent
ration of chloride ion, pH, temperature, stirring rate and the concent
ration of formaldehyde in the solution and decreasing the current dens
ity and charge passed resulted in increased current efficiency of degr
adation of formaldehye with electrogenerated hypochlorite ion.