Preliminary Study on Dimensionless Expression of Bacterial Chemotaxis in Simulated Contaminated System

2017 4th International Conference on Environmental Systems Research

生态环境科学

Wang, Xiaopu^1,2 ; Gao, Beibei^1,3 ; Gu, Shuaiwei^4 ; Zhong, Wei^1 ; Kihaule, Kenneth S.^1 ; Ford, Roseanne M.^3

School of Petroleum Engineering, China University of Petroleum (East China), SHANDONG

266555, China^1

National Engineering Laboratory for Subsea Equipment Testing and Detection Technology, SHANDONG

266555, China^2

Department of Chemical Engineering, University of Virginia, United States of America, Charlottesville

VA

22904, United States^3

Shandong Provincial Key Laboratory of Oil and Gas Storage and Transportation Security, China University of Petroleum (East China), SHANDONG

266555, China^4

关键词: Bacterial chemotaxis;    Contaminant sources;    Contaminated groundwater;    Dimensionless number;    Field scale;    Influential factors;    Missing data;    Phase liquids;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/178/1/012009/pdf
DOI  :  10.1088/1755-1315/178/1/012009

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The use of chemotactic bacteria in bioremediation may improve the efficiency and decrease the cost of restoration of contaminated groundwater system. However, most previous studies focused at the laboratory scale and could hardly apply to the field scale. In this study, a dimensionless equation was formulated to solve this problem. First, the main influential factors were extracted from previous researches and then one set of dimensionless numbers was obtained based on Buckingham theory. After collecting parameter values and supplementing missing data, Chemotaxis number (Ch), the ratio of accumulated bacterial concentration to its initial value, was correlated with a combination of dimensionless numbers. For a Chemotaxis number greater than one, the bioremediation strategy is expected to be effective, and chemotactic bacteria are expected to accumulate around nonqueous phase liquid (NAPL) contaminant sources efficiently.