Experimental Investigation and Numerical Simulation for Bacteria Transport in Soil  

作　　者：廉景燕 刘天雨 张瑞玲 

机构地区：[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

出　　处：《Chinese Journal of Chemical Engineering》2011年第2期327-333,共7页中国化学工程学报（英文版）

基　　金：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 tertbutyl 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 insitu contamination remediation operation.在土壤和地下水的细菌运输的彻底的理解对环境 bioremediation 的成功的实践重要。在这个工作，有生长和细菌的运输的腐烂模型的双过程的吸附被建议。所在地的土壤和高效率甲基 tert 丁基醚(MTBE ) 降级的细菌 Chryseobacterium sp.A-3，在实验被使用。模型用一个维的土壤列实验被验证。有生长和腐烂模型的双过程的吸附建议了很好的结果表演在土壤和地下水环境描述微生物的迁居机制。根据模型分析和模拟，细菌的运输作为流动速度和入口房间集中增加被提高。与沾染物 MTBE 相比，细菌显示出更强壮的运输能力但是在土壤的不可逆的拉紧阻止细菌比 MTBE 长搬运。结果有某些有启发性的意义到在原处污染补习操作。

关 键 词：BACTERIA TRANSPORT SOIL MTBE simulation 

分 类 号：X53[环境科学与工程—环境工程] Q939.105[生物学—微生物学]