SCI和EI收录∣中国化工学会会刊

›› 2011, Vol. 19 ›› Issue (2): 327-333.

• • 上一篇    下一篇

Experimental Investigation and Numerical Simulation for Bacteria Transport in Soil

廉景燕1, 刘天雨1, 张瑞玲2   

  1. 1. School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China;
    2. School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384, China
  • 收稿日期:2010-05-24 修回日期:2011-01-21 出版日期:2011-04-28 发布日期:2011-04-28
  • 通讯作者: ZHANG Ruiling,E-mail:ruilingzhang9@gmail.com
  • 基金资助:
    Supported by the National High Technology Research and Development Program of China(2009AA063102)

Experimental Investigation and Numerical Simulation for Bacteria Transport in Soil

LIAN Jingyan1, LIU Tianyu1, ZHANG Ruiling2   

  1. 1. School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China;
    2. School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384, China
  • Received:2010-05-24 Revised:2011-01-21 Online:2011-04-28 Published:2011-04-28
  • Supported by:
    Supported by the National High Technology Research and Development Program of China(2009AA063102)

摘要: A thorough understanding of bacteria transport in soil and groundwater is vital to the successful practice of environmental bioremediation.In this work,a dual-process adsorption with growth and decay model of bacterial transport was proposed.The onsite soil and the high efficiency methyl tert-butyl ether (MTBE) degrading bacterium Chryseobacterium sp.A-3,was used in the experiments.The model was validated using one-dimensional soil column experiments.The results show that the dual-process adsorption with growth and decay model proposed well describes the migration mechanism of microorganisms in soil and groundwater environment.According to the model analysis and simulation,the bacterial transport is enhanced as flow velocity and inlet cell concentration increase.Compared with the contaminant MTBE,the bacteria show stronger transport capacity but the irreversible straining in soil prevents the bacteria from transporting longer than MTBE.The results have certain instructive significance to the in-situ contamination remediation operation.

关键词: bacteria, transport, soil, MTBE, simulation

Abstract: A thorough understanding of bacteria transport in soil and groundwater is vital to the successful practice of environmental bioremediation.In this work,a dual-process adsorption with growth and decay model of bacterial transport was proposed.The onsite soil and the high efficiency methyl tert-butyl ether (MTBE) degrading bacterium Chryseobacterium sp.A-3,was used in the experiments.The model was validated using one-dimensional soil column experiments.The results show that the dual-process adsorption with growth and decay model proposed well describes the migration mechanism of microorganisms in soil and groundwater environment.According to the model analysis and simulation,the bacterial transport is enhanced as flow velocity and inlet cell concentration increase.Compared with the contaminant MTBE,the bacteria show stronger transport capacity but the irreversible straining in soil prevents the bacteria from transporting longer than MTBE.The results have certain instructive significance to the in-situ contamination remediation operation.

Key words: bacteria, transport, soil, MTBE, simulation