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1070852 
Journal Article 
Oxidation of bisphenol A by UV/S2O8(2-): comparison with UV/H2O2 
Yoon, SH; Jeong, S; Lee, S 
2012 
Yes 
Environmental Technology
ISSN: 0959-3330
EISSN: 1479-487X 
Environmental Technology 
33 
1-3 
123-128 
English 
22519095 
WOS:000301927400014 
The UV/S2O8(2-) process was applied to decompose bisphenol A (BPA), which is a representative endocrine-disrupting chemical (EDC), and was comared with the UV/H2O2 process. The BPA degradation efficiency by UV/S2O8(2-) was increased by increasing S2O8(2-) concentration or decreasing BPA concentration. The presence of humic acid caused an inhibitory effect. The BPA oxidation rate by UV/S2O8(2-) was increased in the following order: neutral pH (pH(i) = 7) < acidic pH (pH(i) = 4) < basic pH (pH(i) = 10). The main oxidizing species in the UV/S2O8(2-) system was sulphate radical (SO4(-*)), whereas the main oxidizing species in the UV/H2O2 system was OH radical (OH*). Compared with UV/H2O2, the UV/S2O8(2-) process showed higher performance for not only BPA degradation but also its mineralization, which means that SO4(-*) is a more effective oxidant for BPA than the OH*. The results shown in this study imply that the SO4(-*) -based UV/S2O8(2-) process can be an excellent alternative process for the widely used UV/H2O2 process, with higher remediation performance. 
endocrine-disrupting chemical; bisphenol A; UV/S2O82-; UV/H2O2; sulphate radical; OH radical 
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