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标题: Adsorption-enforced Fenton-like process using activated carbon-supported iron oxychloride catalyst for wet scrubbing of airborne dichloroethane

作者: Fu, CC (Fu, Chenchong); Pan, C (Pan, Cong); Chen, T (Chen, Tao); Peng, DQ (Peng, Deqin); Liu, YQ (Liu, Yaqian); Wu, F (Wu, Feng); Xu, J (Xu, Jing); You, ZX (You, Zhixiong); Li, JJ (Li, Jinjun); Luo, LT (Luo, Liting)

来源出版物: CHEMOSPHERE 卷: 307 文献号: 136193 DOI: 10.1016/j.chemosphere.2022.136193 子辑: 4 出版年: NOV 2022

摘要: Wet scrubbing is a low-cost process for disposing of air pollutants. Nevertheless, this method is rarely used for the treatment of volatile organic compounds (VOCs) because of their poor water solubility. In this study, we used a unique wet scrubbing system containing H2O2 and activated carbon (AC)-supported iron oxychloride (FeOCl) nanoparticles to remove airborne dichloroethane (DCE). The operating conditions of the wet scrubber were optimized, and the mechanism was explored. The results showed that the adsorption of dissolved DCE onto AC promoted its transfer from air to water, while the accumulation of DCE on AC facilitated its oxidation by (OH)-O-center dot generated on FeOCl catalyst. The wet scrubber performed well at pH 3 and low H2O2 concentrations. By pulsed or continuous dosing H2O2, the cooperative adsorption-catalytic oxidation allowed long-term DCE removal from air. Benefiting from satisfactory cost-effectiveness, avoidance of toxic byproduct formation, and less corrosion and catalyst poisoning, wet scrubbers coupled with cooperative adsorption and heterogeneous advanced oxidation processes could have broad application potentials in VOC control.

作者关键词: Air pollutants; CVOCs; FeOCl/AC; Wet scrubber; Catalytic oxidation; AOPs

地址: [Fu, Chenchong; Pan, Cong; Chen, Tao; Peng, Deqin; Liu, Yaqian; Wu, Feng; You, Zhixiong; Li, Jinjun] Wuhan Univ, Sch Resource & Environm Sci, Hubei Key Lab Bioresource & Environm Biotechnol, Wuhan 430079, Peoples R China.

[Xu, Jing] Wuhan Univ, State Key Lab Water Resources & Hydropower Engn Sc, Wuhan 430072, Peoples R China.

[Luo, Liting] Chinese Acad Sci, Wuhan Inst Phys & Math, Innovat Acad Precis Measurement Sci & Technol, Natl Ctr Magnet Resonance Wuhan,State Key Lab Magn, Wuhan 430071, Peoples R China.

通讯作者地址: Li, JJ (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, Hubei Key Lab Bioresource & Environm Biotechnol, Wuhan 430079, Peoples R China.

Luo, LT (通讯作者)，Chinese Acad Sci, Wuhan Inst Phys & Math, Innovat Acad Precis Measurement Sci & Technol, Natl Ctr Magnet Resonance Wuhan,State Key Lab Magn, Wuhan 430071, Peoples R China.

电子邮件地址: lijinjun@whu.edu.cn; liting.luo@apm.ac.cn

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