An, Seong-Nam Choi, Nag-Choul Choi, Jae-Woo Lee, Soonjae 2024-01-19T23:32:28Z 2024-01-19T23:32:28Z 2021-09-03 2018-02 0049-6979 https://pubs.kist.re.kr/handle/201004/121774 In this study, photocatalytic degradation of bisphenol A (BPA) was investigated using two types of catalysts (TiO2 and ZnO) with various metal ion concentrations and amounts of added H2O2. A kinetic test was performed to observe the changes of BPA over time under UV irradiation in a photocatalytic reactor. Experimental results demonstrated that degradation efficiency of ZnO was higher than that of TiO2. The degradation rate increased as catalyst dosage increased until reaching optimum dosage, after which degradation rate decreased. The addition of H2O2 improved the degradation efficiency of BPA, with the degradation efficiency increasing with the amount of H2O2. All metal ions, including Fe2+, Ni2+, and Cu2+, inhibited the degradation of BPA by ZnO at natural pH, whereas Fe2+ and Ni2+ enhanced degradation efficiency of BPA at acidic pH. Comparison of BPA degradation with H2O2 only, ZnO/H2O2, Fe2+/H2O2, and ZnO/Fe2+/H2O2 revealed that Fe2+/H2O2 was more efficient than other processes at lower pH (pH = 3.44), whereas ZnO/H2O2 the most efficient at higher pH (pH = 6.44). These results indicate that ZnO/H2O2 process was observed to be the most efficient of all processes. Degradation efficiency of BPA by ZnO was also influenced by additional parameters, including H2O2 concentration, metal ions, and solution pH. English Kluwer Academic Publishers Photodegradation of Bisphenol A with ZnO and TiO2: Influence of Metal Ions and Fenton Process Article 10.1007/s11270-018-3701-9 1 Water, Air, & Soil Pollution, v.229, no.2 Water, Air, & Soil Pollution 229 2 N scie scopus 000424317900009 2-s2.0-85041137323 Environmental Sciences Meteorology & Atmospheric Sciences Water Resources Environmental Sciences & Ecology Meteorology & Atmospheric Sciences Water Resources Article SOLAR PHOTOCATALYTIC DEGRADATION PHOTOCHEMICAL OXIDATION TITANIUM-DIOXIDE OXYGEN VACANCIES AZO-DYE PHENOL WATER IRRADIATION SUSPENSIONS DECOLORIZATION Bisphenol A Photocatalytic degradation TiO2 ZnO Fenton