过氧二硫酸盐
降级(电信)
双酚A
紫外线
化学
环境化学
毒性
紫外线辐射
紫外线
光化学
材料科学
催化作用
放射化学
生物化学
有机化学
光电子学
电信
计算机科学
环氧树脂
作者
Hongbo Peng,Hong Gu,Zhimin Xu,Xiong Guan,Peng Fei Gao,Siyao Wang,X.-B. Li,Fangfang Li
标识
DOI:10.1080/09593330.2024.2335670
摘要
Ultraviolet light (UV)-assisted advanced oxidation processes (AOPs) are commonly used to degrade organic contaminants. However, this reaction system's extensive comprehension of the degradation mechanisms and toxicity assessment remains inadequate. This study focuses on investigating the degradation mechanisms and pathways of bisphenol A (BPA), generation of reactive oxygen species (ROS), and toxicity of degradation intermediates in UV/PDS/ferrous composites (FeOx) systems. The degradation rate of BPA gradually increased from the initial 11.92% to 100% within 120 min. Sulfate radicals (SO4.−), hydroxyl radicals (.OH), superoxide anions (O2.−), and singlet oxygen (1O2) were the primary factors in the photocatalytic degradation of BPA in the UV/PDS/FeOx systems. The main reactions of BPA in this system were deduced to be β-bond cleavage, hydroxyl substitution reaction, hydrogen bond cleavage, and oxidation reaction. A trend of decreasing toxicity for the degradation intermediates of BPA was observed according to the toxicity investigations. The efficient degradation of BPA in UV/PDS/FeOx systems provided theoretical data for AOPs, which will improve the understanding of organic contaminants by FeOx in natural industry wastewater.
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