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Excellent performance of electro-assisted catalytic wet air oxidation of refractory organic pollutants

机译：电助催化湿空气氧化难降解有机污染物的优异性能

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摘要

Catalytic wet air oxidation (CWAO) is a clean process for the treatment of toxic and/or biorefractory contaminants while it is a challenge to perform the CWAO at room temperature. Herein, we report an electro-assisted CWAO (ECWAO) process using partially oxidized nickel (Ni@NiO) immobilized on a porous graphite felt (GF) as a catalytic anode. Such a process demonstrates extensive effectiveness and good stability in the deep oxidation of various organic pollutants including triclosan (TCS), bisphenol A, ciprofloxacin, sulfamethoxazole, congo red, crystal violent and rodamine B at room temperature. The typical pollutant TCS is rapidly degraded within 105 min with a mineralization efficiency of 86.0 +/- 1.4%, at specific energy consumption of 5.3 +/- 0.3 kW h kg-TOC-1. NiO is identified as the catalytically active site at which 02 is dissociated and electro-activated to oxidize the TCS at room temperature. The ECWAO process on the anodic Ni@NiO/GF presents a great potential as an environmental-friendly and energy saving process for treating high concentrations of refractory organic pollutants under ambient condition. (C) 2019 Elsevier Ltd. All rights reserved.
机译：催化湿空气氧化（CWAO）是一种用于处理有毒和/或生物难降解污染物的清洁工艺，而在室温下进行CWAO是一项挑战。本文中，我们报告了一种电辅助CWAO（ECWAO）工艺，该工艺使用固定在多孔石墨毡（GF）上的部分氧化的镍（Ni @ NiO）作为催化阳极。这种方法在室温下对包括三氯生（TCS），双酚A，环丙沙星，磺胺甲恶唑，刚果红，结晶暴力和罗丹明B在内的各种有机污染物的深度氧化显示出广泛的有效性和良好的稳定性。典型的污染物TCS在105分钟内迅速降解，矿化效率为86.0 +/- 1.4％，单位能耗为5.3 +/- 0.3 kWh kg-TOC-1。 NiO被确定为催化活性位点，在室温下，O 2被解离并被电激活以氧化TCS。在阳极Ni @ NiO / GF上的ECWAO工艺具有巨大的潜力，可作为一种环境友好的节能工艺，用于在环境条件下处理高浓度的难处理有机污染物。 （C）2019 Elsevier Ltd.保留所有权利。

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  • 来源
    《Water Research》 |2019年第1期|313-321|共9页
  • 作者

    Sun Min; Zhang Yu; Kong Shi-Yu; Zhai Lin-Feng; Wang Shaobin;

  • 作者单位

    Hefei Univ Technol, Sch Chem & Chem Engn, Anhui Prov Key Lab Adv Catalyt Mat & React, Hefei 230009, Anhui, Peoples R China;

    Hefei Univ Technol, Sch Chem & Chem Engn, Anhui Prov Key Lab Adv Catalyt Mat & React, Hefei 230009, Anhui, Peoples R China;

    Hefei Univ Technol, Sch Chem & Chem Engn, Anhui Prov Key Lab Adv Catalyt Mat & React, Hefei 230009, Anhui, Peoples R China;

    Hefei Univ Technol, Sch Chem & Chem Engn, Anhui Prov Key Lab Adv Catalyt Mat & React, Hefei 230009, Anhui, Peoples R China;

    Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Nickel oxide; Catalysis; Anode electric field; Air oxidation; Mineralization;

    机译：氧化镍;催化;阳极电场;空气氧化;矿化;

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