Abstract:
Electrogalvanizing zinc plate was used to degrade the organic pollutants in wastewater. Reducing degradation rates of azo dyes and chloroorganics by the electrogalvanizing zinc plate were greatly increased under the irradiation of an iodinetungsten lamp. Measurement results of degradation activities of various organic pollutants by electrogalvanizing zinc plate and XPS show that the reducing degradation of azo dyes and chloro-organics under irradiation also follows general laws of zero-valent metal reduction. It is supposed that the irradiation light accelerates the electric transfer process between the organics and Zn0 via the excitation of the organic molecule or a possible organic-Zn0 complex. The endurance of the reducing degradation activity of electrogalvanizing zinc plate is pretty well, and no obvious change is found after several times usage.