Abstract
The photodegradation of bisphenol A (BPA), a representative endocrine disrupting chemical, was carried out in the presence of the Fenton reagent. The degradation rate was strongly influenced by the pH, and initial concentrations of H 2O 2 and Fe(II). An initial BPA concentration of 10 mg l −1 was completely degraded after 9 min under the optimum conditions. This reaction was found to follow the first order kinetics law. The formation of CO 2 as a result of mineralization of BPA was observed during the photo-Fenton process. The degree of BPA conversion to CO 2 was more than 90% under UV irradiation for 36 h. The decomposition of BPA during the photo-Fenton treatment gave six kinds of intermediate products, such as phenol, p-hydroquinone, etc. The degradation mechanism of BPA was proposed on the base of the evidence of the identified intermediates. Based on these results, the photo-Fenton reaction could be useful technology for the treatment of wastewater containing BPA.
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