Treatment of O-Cresol in Aqueous Solution by UV/ZnO Process

摘要

The decomposition of o-cresol in aqueous solution by UV/ZnO process was studied. The experiments were carried out under UV light intensities, dissolved oxygen levels, and other operating condition to investigate the removal and the mineralize efficiencies of reactant. Photooxidation of o-cresol in aqueous solution by UV/ZnO process were increased with increasing UV light intensities, and dissolved oxygen levels. In order to model the removal of reactants by UV/ZnO process at various operation conditions, a design equation was developed by the modified Langmuir-Hinshewood model. ZnO was not dissolved obviously in the o-cresol solution without UV irradiation. Under the UV irradiation, the dissolution of the zinc ion was decreased with increasing solution pH in o-cresol solutions.