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首页> 外文期刊>Journal of Hazardous Materials >Evaluating a novel permeable reactive bio-barrier to remediate PAH-contaminated groundwater
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Evaluating a novel permeable reactive bio-barrier to remediate PAH-contaminated groundwater

机译：评价一种新型的可渗透反应性生物屏障，以修复受PAH污染的地下水

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摘要

Permeable reactive barriers (PRBs) are an environmentally-friendly, cost-effective in-situ technology that can be used to remediate polycyclic aromatic hydrocarbons (PAHs)-contaminated groundwater. In this study, PRBs of two different materials (A and B) that relied on microbes self-domestication mechanism were designed and tested. The materials A and B were the same apart from their carbon source: A was based on wheat straw and B was based on coconut shell biochar. We used laboratory batch experiments followed by long-term column tests to assess the capacity of these two materials to remediate PAHs. The results showed that both A and B removed almost 100% of the phenanthrene. More carbon was released from A (80-500 mg/L) than from B (72-195 mg/L), and slightly more oxygen was released from B (7.31-10.31 mg/L) than A (7.15-9.64 mg/L). The release of organic carbon from material B was more stable than that from material A. The bacterial communities of both columns comprised members of the Mycobacterium, Pseudomonas, and Sphingomonas genera that are known to degrade phenanthrene, and Pseudomonas and Sphingomonas were 7 times more abundant in column B than in column A. Material B is more promising for treating PAH-contaminated groundwater than material A.
机译：渗透性反应屏障（PRB）是一种环保，经济高效的原位技术，可用于修复多环芳烃（PAHs）污染的地下水。在这项研究中，设计并测试了两种基于微生物自我驯化机制的材料（A和B）的PRB。材料A和B的碳源相同：A是基于麦秸，而B是基于椰子壳生物炭。我们使用实验室分批实验，然后进行长期的柱测试，以评估这两种材料修复PAHs的能力。结果表明，A和B都去除了几乎100％的菲。从A（80-500 mg / L）释放出的碳比从B​​（72-195 mg / L）释放出的碳多，从B（7.31-10.31 mg / L）释放出的氧气比从A（7.15-9.64 mg / L）释放出更多的氧L）。从材料B释放的有机碳比从材料A释放的碳更稳定。两个色谱柱的细菌群落均包含分枝杆菌，假单胞菌和鞘氨醇单胞菌属的成员，这些成员可降解菲，而假单胞菌和鞘氨醇单胞菌的丰富度是其七倍。在B列中比在A列中。材料B比材料A更有望用于处理受PAH污染的地下水。

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  • 来源
    《Journal of Hazardous Materials》 |2019年第15期|444-451|共8页
  • 作者

    Liu Cuicui; Chen Xiaohui; Mack E. Erin; Wang Shui; Du Wenchao; Yin Ying; Banwart Steven A.; Guo Hongyan;

  • 作者单位

    Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China;

    Univ Leeds, Sch Civil Engn, Leeds LS2 9JT, W Yorkshire, England;

    DuPont Corp Remediat Grp, Wilmington, DE 19805 USA;

    Jiangsu Prov Acad Environm Sci, Nanjing 210036, Jiangsu, Peoples R China;

    Nanjing Normal Univ, Sch Environm, Nanjing 210023, Jiangsu, Peoples R China;

    Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China;

    Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England|Univ Leeds, Global Food & Environm Inst, Leeds LS2 9JT, W Yorkshire, England;

    Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, 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

    Microbe; Self-domestication; Phenanthrene; Groundwater remediation; Permeable reactive biobarrier;

    机译：微生物;自驯化;菲;地下水修复;渗透性活性生物屏障;

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