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首页> 外文期刊>Environmental Pollution >Enhanced degradation of triphenyl phosphate (TPHP) in bioelectrochemical systems: Kinetics, pathway and degradation mechanisms
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Enhanced degradation of triphenyl phosphate (TPHP) in bioelectrochemical systems: Kinetics, pathway and degradation mechanisms

机译：增强生物电化学系统中磷酸三苯基（TPHP）的降解：动力学，途径和降解机制

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摘要

Triphenyl phosphate (TPHP) is one of the major organophosphate esters (OPEs) with increasing consumption. Considering its largely distribution and high toxicity in aquatic environment, it is important to explore an efficient treatment for TPHP. This study aimed to investigate the accelerated degradation of TPHP in a three-electrode single chamber bioelectrochemical system (BES). Significant increase of degradation efficiency of TPHP in the BES was observed compared with open circuit and abiotic controls. The one-order degradation rates of TPHP (1.5 mg L-1) were increased with elevating sodium acetate concentrations and showed the highest value (0.054 +/- 0.010 h(-1)) in 1.0 g L-1 of sodium acetate. This result indicated bacterial metabolism of TPHP was enhanced by the application of micro-electrical field and addition acetate as co-substrates. TPHP could be degraded into diphenyl phosphate (DPHP), hydroxyl triphenyl phosphate (OH-TPHP) and three byproducts. DPHP was the most accumulated degradation product in BES, which accounted more than 35.5% of the initial TPHP. The composition of bacterial community in BES electrode was affected by the acclimation by TPHP, with the most dominant bacteria of Azospirillum, Petrimonas, Pseudomonas and Geobacter at the genera level. Moreover, it was found that the acute toxic effect of TPHP to Vibrio fischeri was largely removed after the treatment, which revealed that BES is a promising technology to remove TPHP threaten in aquatic environment. (C) 2019 Elsevier Ltd. All rights reserved.
机译：磷酸三苯基（TPHP）是具有越来越多的消耗的主要有机磷酸酯（OPE）之一。考虑到水生环境的主要分布和高毒性，重要的是探索TPHP的有效待遇。本研究旨在研究三电极单室生物电化学系统中TPHP的加速降解（BES）。与开放式电路和非生物对照相比，观察到BES中TPHP降解效率的显着提高。 TPHP（1.5mg L-1）的单级降解率随乙酸钠浓度升高，并显示出最高值（0.054 +/- 0.010 h（-1）），乙酸钠1.0g L-1。通过施加微电场并加入乙酸盐作为共衬底，该结果表明TPHP的细菌代谢增强。 TPHP可以降解到磷酸二苯基（DPHP），羟基苯基磷酸三苯基（OH-TPHP）和三个副产物中。 DPHP是BES中最累计的退化产品，占初始TPHP的35.5％。 BES电极中的细菌群落的组成受TPHP的适应性影响，具有氮卓氏菌，Petrimonas，Pseudomonas和Geobacter的最显着的细菌。此外，发现在治疗后，TPHP至vibrioFischeri的急性毒性作用在很大程度上除去了，这表明BES是一种有前途的技术，以除去水生环境中的TPHP威胁。 （c）2019 Elsevier Ltd.保留所有权利。

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  • 来源
    《Environmental Pollution》 |2019年第1期|113040.1-113040.8|共8页
  • 作者

    Hou Rui; Luo Xiaoshan; Liu Chuangchuang; Zhou Lihua; Wen Junlin; Yuan Yong;

  • 作者单位

    Guangdong Univ Technol Inst Environm Hlth & Pollut Control Sch Environm Sci & Engn Guangdong Key Lab Environm Catalysis & Hlth Risk Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Inst Environm Hlth & Pollut Control Sch Environm Sci & Engn Guangdong Key Lab Environm Catalysis & Hlth Risk Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Inst Environm Hlth & Pollut Control Sch Environm Sci & Engn Guangdong Key Lab Environm Catalysis & Hlth Risk Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Biomed & Pharmaceut Sci Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Inst Environm Hlth & Pollut Control Sch Environm Sci & Engn Guangdong Key Lab Environm Catalysis & Hlth Risk Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Inst Environm Hlth & Pollut Control Sch Environm Sci & Engn Guangdong Key Lab Environm Catalysis & Hlth Risk Guangzhou 510006 Guangdong Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Bioelectrochemical systems (BES); Triphenyl phosphate (TPHP); Organophosphate esters (OPEs); Bio-degradation pathway; Electrochemical biofilm;

    机译：生物电化学系统（BES）;三苯基磷酸酯（TPHP）;有机磷酸酯（OPE）;生物降解途径;电化学生物膜;

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