标題: Elimination of bisphenol A with visible light-enhanced peroxydisulfate activation process mediated by Fe3+-nitrilotriacetic acid complex

作者: Xiao, Y (Xiao, Yan); Xiong, LL (Xiong, Liangliang); Xu, Y (Xu, Yin); Zhang, H (Zhang, Hui)

來源出版物: JOURNAL OF HAZARDOUS MATERIALS 卷: 440 文獻号: 129780 DOI: 10.1016/j.jhazmat.2022.129780 出版年: OCT 15 2022

摘要: In recent years, visible light assisted advanced oxidation processes (AOPs) are appealing in the elimination of pollutants. Herein, an innovative and eco-friendly visible light enhanced Fe3+-nitrilotriacetic acid system for the activation of peroxydisulfate (Vis/Fe3+-NTA/PDS) was proposed for the removal of bisphenol A (BPA). Fe3+-NTA could be dissociated through ligand-to-metal charge transfer (LMCT) to realize the generation of Fe2+ for the continuous activation of PDS to remove BPA. The use of 0.10 mM Fe3+, 0.10 mM NTA and 1.00 mM PDS led to 97.5% decay of 0.05 mM BPA and 66.3% of TOC removal in 30 min with the illumination of visible light at initial pH 3.0. The sulfate and hydroxyl radicals were proved to be the dominant species leading to BPA removal by means of radical scavenging experiments, radical probes and electron paramagnetic resonance (EPR) technique. The effects of various operating parameters, natural water constituents as well as different water matrices on BPA abatement were explored. The intermediate products of BPA degradation were identified and a possible transformation pathway was proposed. Briefly, this research provides an attractive strategy for the remediation of refractory wastewater using NTA assisted with visible light in the homogeneous Fe3+/PDS system.

作者關鍵詞: Visible light; Fe3+-NTA complex; Peroxydisulfate; Homogeneous activation; Bisphenol A

地址: [Xiao, Yan; Xiong, Liangliang; Zhang, Hui] Wuhan Univ, Sch Resource & Environm Sci, Dept Environm Sci & Engn, Wuhan 430079, Peoples R China.

[Xu, Yin] Hubei Univ, Fac Resources & Environm Sci, Hubei Key Lab Reg Dev & Environm Response, Wuhan 430062, Peoples R China.

通訊作者地址: Zhang, H (通訊作者)，Wuhan Univ, Sch Resource & Environm Sci, Dept Environm Sci & Engn, Wuhan 430079, Peoples R China.

Xu, Y (通訊作者)，Hubei Univ, Fac Resources & Environm Sci, Hubei Key Lab Reg Dev & Environm Response, Wuhan 430062, Peoples R China.

電子郵件地址: yxu1101@163.com; eeng@whu.edu.cn

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