标题: Porous graphitized carbon-supported FeOCl as a bifunctional adsorbent-catalyst for the wet peroxide oxidation of chlorinated volatile organic compounds: Effect of mesopores and mechanistic study
作者: Pan, C (Pan, Cong); Wang, WY (Wang, Wenyu); Zhang, YH (Zhang, Yihui); Nam, JC (Nam, Jong Chol); Wu, F (Wu, Feng); You, ZX (You, Zhixiong); Xu, J (Xu, Jing); Li, JJ (Li, Jinjun)
来源出版物: APPLIED CATALYSIS B-ENVIRONMENTAL 卷: 330 文献号: 122659 DOI: 10.1016/j.apcatb.2023.122659 出版年: AUG 5 2023
摘要: Wet scrubbing coupled with adsorption-enhanced heterogeneous advanced oxidation processes (AOPs) are promising approaches to the treatment of chlorinated volatile organic compounds (CVOCs). However, micro-porous activated carbon-based adsorbents and catalyst supports have the disadvantage of difficult molecule diffusion. Herein, we have demonstrated that porous graphitized carbon (PGC) allowed faster intra-particle diffusion of organic molecules due to its well-developed mesoporous structure. Therefore, a wet scrubbing system containing H2O2 and a PGC-supported FeOCl catalyst has been developed to effectively remove gaseous dichloroethane, trichloroethylene, dichloromethane and chlorobenzene. The scrubber performed well at pH 3.0 using a FeOCl/PGC dosage of 0.2 g/L and initial H2O2 concentration of 40 mM. Its good long-term performance was achieved by replenishing H2O2 to maintain a suitable concentration. The degradation pathways of dichlo-roethane have been proposed using a combination of intermediate analysis and density functional theory cal-culations. PGC-supported catalysts may be desirable bifunctional adsorbent-catalyst materials for wet scrubbing of CVOCs.
作者关键词: CVOCs; Iron oxychloride; PGC; Wet scrubber; Catalytic wet peroxide oxidation
KeyWords Plus: FENTON-LIKE CATALYST; IRON OXYCHLORIDE; BISPHENOL-A; DEGRADATION; ADSORPTION
地址: [Pan, Cong; Wang, Wenyu; Zhang, Yihui; Nam, Jong Chol; 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 Sci, Wuhan 430072, 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.
Xu, J (通讯作者)，Wuhan Univ, State Key Lab Water Resources Hydropower Engn Sci, Wuhan 430072, Peoples R China.
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