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首页> 外文期刊>Environmental Science & Technology >Transport and Bacterial Interactions of Three Bacterial Strains in Saturated Column Experiments
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Transport and Bacterial Interactions of Three Bacterial Strains in Saturated Column Experiments

机译：三种细菌在饱和柱实验中的转运和细菌相互作用

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摘要

The impact of bacteria-solid and bacteria-bacteria interactions on the transport of Klebsiella oxytoca, Burkholderia cepacia G4PR1, and Pseudomonas sp. #S was investigated in saturated sand column experiments (L = 114 mm; o = 33 mm) under constant water velocities (～5 cm • h~(-1)). Bacterial strains were injected into the columns as pulses either individually, simultaneously, or successively. A one-dimensional mathematical model for advective-dispersive transport and for irreversible and reversible bacterial kinetic sorption was used to analyze the bacterial breakthrough curves. Different sorption parameters were obtained for each strain in each of the three experimental setups. In the presence of other bacteria, sorption parameters for B. cepacia G4PR1 remained similar to results from individual experiments, indicating the presence of other bacteria generally had a lesser influence on its migration than for the other bacteria. K. oxytoca is more competitive for the sorption sites when simultaneously injected with the other bacteria. Ps. sp. #S generally yielded the greatest detachment rates and the least affinity to attach to the sand, indicative of its mobility in groundwater systems. The results of this study clearly indicate both bacteria-solid and bacteria-bacteria interactions influence the migration of bacteria. A more complete understanding of such interactions is necessary to determine potential migration in groundwater systems.
机译：细菌-固体和细菌-细菌相互作用对催产克雷伯菌，洋葱伯克霍尔德菌G4PR1和假单胞菌sp。在恒定水速（〜5 cm•h〜（-1））下，在饱和砂柱实验（L = 114 mm； o = 33 mm）中研究#S。将细菌菌株以脉冲形式单独，同时或相继注入到色谱柱中。利用一维数学模型对流-分散的运输以及不可逆和可逆的细菌动力学吸附来分析细菌的穿透曲线。在三个实验装置的每一个中，每种菌株获得了不同的吸附参数。在存在其他细菌的情况下，洋葱伯克霍尔德菌G4PR1的吸附参数仍然与单个实验的结果相似，这表明与其他细菌相比，其他细菌的存在通常对其迁移的影响较小。当同时注射其他细菌时，催产K. oxytoca在吸附位点上更具竞争力。附言sp。 #S通常产生最大的脱离速率，而附着在沙子上的亲和力最低，表明它在地下水系统中的流动性。这项研究的结果清楚地表明，细菌-固体相互作用和细菌-细菌相互作用都影响细菌的迁移。为了确定地下水系统中潜在的迁移，必须对此类相互作用有更全面的了解。

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  • 来源
    《Environmental Science & Technology》 |2011年第6期|p.2116-2123|共8页
  • 作者

    Christine Stumpp; John R. Lawrence; M.Jim Hendry; Piotr Maloszewski;

  • 作者单位

    Department of Geological Sciences, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada,Helmholtz Zentrum Muenchen, Institute of Groundwater Ecology, Ingolstaedter Landstrasse 1, D-85764 Neuherberg, Germany;

    Environment Canada, 11 Innovation Blvd., Saskatoon, SK S7N 3H5, Canada;

    Department of Geological Sciences, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada;

    Department of Geological Sciences, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada;

  • 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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