Degradation of bisphenol A through catalytic ozonation process with copper oxide/D851 resin
Qianqian MIAO1,, Guanhua MENG1,2,,, Baohe LIU1, Suyun DING1, Mingyue LOU1 1.School of Energy and Environment, Anhui University of Technology, Ma'anshan 243000, China 2.Biofilm Process Water Purification and Utilization Technology Engineering Research Center, Ministry of Education, Ma'anshan 243000, China
Abstract:In this study, the chelating resin D851 was modified by Cu(NO3)2·3H2O precipitation, then SEM, EDS and FT-IR were used to characterize the corresponding changes before and after modification of D851. Bisphenol A degradation effects by pristine and modified D851 in different reaction systems were studied, and the influences of environmental factors on the performance of catalytic ozonation of bisphenol A by CuOx/D851 were investigated. Furthermore, the mechanism of bisphenol A degradation by catalytic ozonation with modified D851 was discussed. The results showed that the surface morphology and copper ion content of chelating resin D851 changed after modification by Cu(NO3)2·3H2O precipitation. Through the orthogonal experiments, the optimal preparation conditions for CuOx/D851 resin catalyst was determined as follows: pH 8, active component content of 337.5 mmol·L-1, loading temperature of 70 ℃, and reaction time of 10 h. The single factor method was used to optimize the operational conditions for bisphenol A degradation by catalytic ozonation with modified D851, and the degradation rate was 86.71% at the following optimum conditions: ozone flow rate of 8.4 mg·L-1, 0.6 g·L-1 CuOx/D851, wastewater influent flow rate of 4 mL·min-1, initial bisphenol A concentration of 10 mg·L-1, and initial pH 7. In modified chelating resin catalytic ozonation system, the modified chelating resin largely improved the BPA degradation rate through the synergistic effect of hydroxyl radical-direct ozone oxidation. Key words:catalytic ozonation/ chelating resin/ bisphenol A pollution/ copper oxide.
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1.School of Energy and Environment, Anhui University of Technology, Ma'anshan 243000, China 2.Biofilm Process Water Purification and Utilization Technology Engineering Research Center, Ministry of Education, Ma'anshan 243000, China Received Date: 2018-10-10 Accepted Date: 2019-03-15 Available Online: 2019-09-30 Keywords:catalytic ozonation/ chelating resin/ bisphenol A pollution/ copper oxide Abstract:In this study, the chelating resin D851 was modified by Cu(NO3)2·3H2O precipitation, then SEM, EDS and FT-IR were used to characterize the corresponding changes before and after modification of D851. Bisphenol A degradation effects by pristine and modified D851 in different reaction systems were studied, and the influences of environmental factors on the performance of catalytic ozonation of bisphenol A by CuOx/D851 were investigated. Furthermore, the mechanism of bisphenol A degradation by catalytic ozonation with modified D851 was discussed. The results showed that the surface morphology and copper ion content of chelating resin D851 changed after modification by Cu(NO3)2·3H2O precipitation. Through the orthogonal experiments, the optimal preparation conditions for CuOx/D851 resin catalyst was determined as follows: pH 8, active component content of 337.5 mmol·L-1, loading temperature of 70 ℃, and reaction time of 10 h. The single factor method was used to optimize the operational conditions for bisphenol A degradation by catalytic ozonation with modified D851, and the degradation rate was 86.71% at the following optimum conditions: ozone flow rate of 8.4 mg·L-1, 0.6 g·L-1 CuOx/D851, wastewater influent flow rate of 4 mL·min-1, initial bisphenol A concentration of 10 mg·L-1, and initial pH 7. In modified chelating resin catalytic ozonation system, the modified chelating resin largely improved the BPA degradation rate through the synergistic effect of hydroxyl radical-direct ozone oxidation.