Mathematical modeling of bioremediation of trichloroethylene in aquifers

被引:14
作者
Chen-Charpentier, Benito M. [1 ]
Kojouharov, Hristo V. [2 ]
机构
[1] Univ Wyoming, Dept Math, Laramie, WY 82071 USA
[2] Univ Texas Arlington, Dept Math, Arlington, TX 76019 USA
关键词
multi-species biofilms; trichloroethylene TCE; porous media; bioremediation;
D O I
10.1016/j.camwa.2008.01.007
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Trichloroethylene (TCE) is a very common contaminant of groundwater. It is used as an industrial solvent and is frequently poured into the soil. There exist bacteria that can degrade TCE. In contrast with most cases of bioremediation, the bacteria that degrade TCE do not use it as a carbon source. Instead the bacteria produce an enzyme to metabolize methane. This enzyme can degrade other organics including TCE. In this paper we model in situ bioremediation of TCE in an aquifer by using two species of bacteria: one that forms biobarriers to restrict the movement of TCE and the second one to reduce TCE. The model includes flow of water, transport of TCE and the nutrients, bacterial growth and degradation of TCE. Nonstandard numerical methods are used to discretize the equations. Some results are presented. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:645 / 656
页数:12
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