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首页> 外文期刊>Environmental Science & Technology >Experimental and Mathematical Methodology on the Optimization of Bacterial Consortium for the Simultaneous Degradation of Three Nitrogen Heterocyclic Compounds
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Experimental and Mathematical Methodology on the Optimization of Bacterial Consortium for the Simultaneous Degradation of Three Nitrogen Heterocyclic Compounds

机译：同时降解三种氮杂环化合物的细菌联合体优化的实验和数学方法

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摘要

This study aims to establish a systematic method to optimize the bacterial consortium for the simultaneous biodegradation of multixenobiotics in waste-water. Three nitrogen heterocyclic compounds (NHCs), pyridine,quinoline,and carbazole,were chosen as the target compounds with each about 200 mg/L. Different consortia originated from six bacteria for degrading pyridine (Paracoccus sp. BW001 and Shinella zoogloeoides BC026),quinoline (Pseudomonas sp. BW003 and BW004),and carbazole (Pseudomonas sp. BC039 and BC046) were tested for the capacity of NHCs simultaneous degradation. Mathematical methods including dummy-variable-laden kinetic modeling,cubic spline regression and interpolation,and dimensionality reduction were employed to evaluate the complex impacts of cocontaminants and coexisting bacteria on the simultaneous biodegradation,and the most efficient consortium was determined. The influences of cocontaminants on the bacterial degradation activity were far greater than the interactions among the mixed bacteria. Integrating the experimental results and mathematical analysis,consortium M19 (BC026,BW004,BC039,and BC046 with dose rate of 1:1:0.5:0.5) was the best one,which degraded over 95% of pyridine,quinoline,and carbazole simultaneously in 15.4 h. The research methodology in this study could be applied to the optimization of a bacterial consortium which might be used in the bioaugmentatjon and bioremediation of multixenobiotics removal.
机译：这项研究旨在建立一种系统的方法来优化细菌财团，以同时降解废水中的多种异源生物。选择了三种氮杂环化合物（NHC），吡啶，喹啉和咔唑作为目标化合物，每种浓度约为200 mg / L。测试了六种细菌降解吡啶的不同组合（Paracoccus sp。BW001和Shinella zoogloeoides BC026），喹啉（Pseudomonas sp。BW003和BW004）和咔唑（Pseudomonas sp。BC039和BC046）的NHCs同时降解能力。采用虚拟变量加载动力学建模，三次样条回归和内插以及降维等数学方法来评估共污染物和共存细菌对同时生物降解的复杂影响，并确定了最有效的财团。辅污染物对细菌降解活性的影响远大于混合细菌之间的相互作用。综合实验结果和数学分析，M19（BC026，BW004，BC039和BC046）的剂量比为1：1：0.5：0.5是最好的，它同时降解了95％以上的吡啶，喹啉和咔唑。 15.4小时这项研究中的研究方法可以应用于细菌财团的优化，该财团可以用于生物强化和生物修复多种异源生物。

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  • 来源
    《Environmental Science & Technology》 |2012年第11期|p.6205-6213|共9页
  • 作者

    Cui Zhao; Donghui Wen; Yin Zhang; Jing Zhang; Xiaoyan Tang;

  • 作者单位

    College of Environmental Sciences and Engineering,The Key Laboratory of Water and Sediment Sciences (Ministry of Education),Peking University,Beijing,100871,People's Republic of China;

    College of Environmental Sciences and Engineering,The Key Laboratory of Water and Sediment Sciences (Ministry of Education),Peking University,Beijing,100871,People's Republic of China;

    Department of Environmental Engineering,College of Life and Environment Sciences,Shanghai Normal University,Shanghai,20023S,People's Republic of China;

    College of Environmental Sciences and Engineering,The Key Laboratory of Water and Sediment Sciences (Ministry of Education),Peking University,Beijing,100871,People's Republic of China;

    College of Environmental Sciences and Engineering,The Key Laboratory of Water and Sediment Sciences (Ministry of Education),Peking University,Beijing,100871,People's Republic of 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);
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