Darcy-scale modeling of microbially induced carbonate mineral precipitation in sand columns

被引：119
作者：
Ebigbo, A. [1 ]
Phillips, A. [2 ]
Gerlach, R. [2 ,3 ]
Helmig, R. [1 ]
Cunningham, A. B. [2 ,3 ]
Class, H. [1 ]
Spangler, L. H. [3 ]
机构：
[1] Univ Stuttgart, Dept Hydromech & Modeling Hydrosyst, D-70569 Stuttgart, Germany
[2] Montana State Univ, Ctr Biofilm Engn, Bozeman, MT 59717 USA
[3] Montana State Univ, Energy Res Inst, Bozeman, MT 59717 USA
来源：
WATER RESOURCES RESEARCH | 2012年 / 48卷
关键词：
POROUS-MEDIA; NACL SOLUTIONS; SPOROSARCINA-PASTEURII; CRYSTAL PRECIPITATION; BACILLUS-PASTEURII; GROUND IMPROVEMENT; UREA HYDROLYSIS; GENE-EXPRESSION; CALCITE; BIOFILM;
D O I：
10.1029/2011WR011714
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This investigation focuses on the use of microbially induced calcium carbonate precipitation (MICP) to set up subsurface hydraulic barriers to potentially increase storage security near wellbores of CO2 storage sites. A numerical model is developed, capable of accounting for carbonate precipitation due to ureolytic bacterial activity as well as the flow of two fluid phases in the subsurface. The model is compared to experiments involving saturated flow through sand-packed columns to understand and optimize the processes involved as well as to validate the numerical model. It is then used to predict the effect of dense-phase CO2 and CO2-saturated water on carbonate precipitates in a porous medium.
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页数：17
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