标題: Heterogeneous degradation of organic contaminant by peroxydisulfate catalyzed by activated carbon cloth

作者: Liu, FZ (Liu, Fuzhen); Xu, Y (Xu, Yin); Zhang, BS (Zhang, Baisong); Liu, YL (Liu, Yalu); Zhang, H (Zhang, Hui)

來源出版物: CHEMOSPHERE  卷: 238  文獻号: UNSP 124611  DOI: 10.1016/j.chemosphere.2019.124611  出版年: JAN 2020  

摘要: An eco-friendly material, activated carbon cloth (ACC) was used as the heterogeneous catalyst in activation of peroxydisulfate (PDS) for the efficient degradation of organic pollutant in water. Besides, the effects of several parameters in the ACC/PDS process including initial pH, PDS concentration, reaction temperature, stirring speed and co-existing anions were investigated. Under optimum conditions, almost complete removal (98.6%) of AO7 in 60 min and 67.4% of total organic carbon (TOC) removal within 180 min were obtained, accompanied by the remarkable destruction of azo band and naphthalene ring on AO7. The electron paramagnetic resonance and radical quenching experiments were carried out to identify the reactive radicals in the ACC/PDS process. Surface characteristic techniques such as XRD, BET, SEM, FTIR, XPS were applied to analysis the change of crystal structure, surface area, surface morphology, functional groups on the surface of fresh and spent ACC samples. Hydroxyl groups (C-OH) and pi-pi transitions significantly affected the catalytic activity of ACC. The intermediate products of AO7 oxidation were identified by LC-MS and the corresponding degradation pathway was proposed. (C) 2019 Elsevier Ltd. All rights reserved.

入藏号: WOS:000497885800111

語言: English

文獻類型: Article

作者關鍵詞: Activated carbon cloth; Peroxydisulfate; Reactive radicals; Acid Orange 7; Surface functional groups

地址: [Liu, Fuzhen; Xu, Yin; Zhang, Baisong; Liu, Yalu; Zhang, Hui] Wuhan Univ, Hubei Environm Remediat Mat Engn Technol Res Ctr, Dept Environm Sci & Engn, Wuhan 430079, Hubei, Peoples R China.

通訊作者地址: Zhang, H (通訊作者)，Wuhan Univ, Hubei Environm Remediat Mat Engn Technol Res Ctr, Dept Environm Sci & Engn, Wuhan 430079, Hubei, Peoples R China.

電子郵件地址: eeng@whu.edu.cn

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