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首页> 外文期刊>Journal of Hazardous Materials >Pilot scale ex-situ bioremediation of heavily PAHs-contaminated soil by indigenous microorganisms and bioaugmentation by a PAHs-degrading and bioemulsifier-producing strain
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Pilot scale ex-situ bioremediation of heavily PAHs-contaminated soil by indigenous microorganisms and bioaugmentation by a PAHs-degrading and bioemulsifier-producing strain

机译：通过原生微生物对重度PAHs污染严重的土壤进行中位异位生物修复，并通过降解PAHs和生产生物乳化剂的菌株进行生物强化

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摘要

This study aims at the remediation of heavily PAH-contaminated soil containing 375 mg of total PAHs per kilogram dry soil. Pilot scale bioremediation experiments were carried out by three approaches with contaminated soil from abandoned sites of Beijing Coking Plant using outdoor pot trials. The first approach was bioaugmentation with a bacterial strain which degrades PAH and produces bioemulsifier, the second approach comprised of biostimulation of indigenous microorganisms with supplementing nutrients and the last approach involved the combination of both biostimulation and bioaugmentation. An on-site land farming group was set as a control in which the total PAHs and 4-6 ring-PAHs were reduced by 23.4% and 10.1%, respectively after 175 days. Meanwhile, in the first approach group, the total PAHs and 4-6 ring-PAHs were reduced by 26.82% and 35.36%, respectively; in the second approach group both percentages were 33.9% and 11.0%, respectively; while in the third approach group, these pollutants were reduced by 43.9% and 55.0%, respectively. The results obtained suggested that biostimulation and bioaugmentation combined could significantly enhance the removal of PAHs in the contaminated soil.
机译：这项研究旨在修复每公斤干土壤中PAH总量为375 mg的重度PAH污染土壤。采用户外盆栽试验，通过三种方法对北京焦化厂废弃场地的污染土壤进行了生物修复实验。第一种方法是用降解PAH并产生生物乳化剂的细菌菌株进行生物强化，第二种方法是对原生微生物进行生物刺激并补充营养，而第二种方法则是将生物刺激和生物强化结合起来。设置了一个现场陆地耕作组作为对照，其中175天后，总PAH和4-6个环PAH分别减少了23.4％和10.1％。同时，在第一种方法组中，总PAH和4-6个环PAH分别减少了26.82％和35.36％；在第二种方法组中，两个百分比分别为33.9％和11.0％；而在第三种方法组中，这些污染物分别减少了43.9％和55.0％。获得的结果表明，生物刺激和生物强化相结合可以显着提高被污染土壤中PAHs的去除。

著录项

  • 来源
    《Journal of Hazardous Materials》 |2012年第30期|p.72-78|共7页
  • 作者

    Guang-Dong Sun; Yang Xu; Jing-Hua Jin; Zhi-Ping Zhong; Ying Liu; Mu Luo; Zhi-Pei Liu;

  • 作者单位

    State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China School of Environment Tsinghua University, Beijing 100084, PR China;

    State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China;

    Environmental Protection Research Institute of Light Industry, Beijing 100089, PR China;

    State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China;

    State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China;

    Environmental Protection Research Institute of Light Industry, Beijing 100089, PR China;

    State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR 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

    aged contaminated soil; PAHs; strain em1; biostimulation; bioaugmentation;

    机译：老化的污染土壤;多环芳烃;菌株em1;生物刺激生物强化;

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