Modeling of biomass-plug development and propagation in porous media

被引:42
作者
Stewart, TL
Kim, DS
机构
[1] Univ Toledo, Dept Environm Chem & Engn, Toledo, OH 43560 USA
[2] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA
关键词
biofilms; bioremediation; dextran; sucrose; network model; porous media;
D O I
10.1016/S1369-703X(03)00146-3
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Microbial biomass (cells and their metabolic byproducts) accumulation and evolution in porous media were simulated using a combination of biofilm evolution model and a biofilm removal model. Theses models describe biomass-plug development, removal, and propagation in biological applications such as microbial enhanced oil recovery, in situ bioremediation, and bio-barrier techniques. The biofilm evolution model includes the cell growth rate and exopolymer production kinetics. The biofilm removal model was used for describing the biomass-plug propagation and channel breakthrough using Bingham yield stress of biofilm, which represents the stability of biofilm against shear stress. Network model was used to describe a porous medium. The network model consists of pore body and pore bond of which the sizes were determined based on the pore size distribution of ceramic cores. The simulation results showed that the biofilm models based on Bingham yield stress predicted the biomass accumulation and channel breakthrough reasonably well. The pressure oscillation (or, permeability oscillation) was also well demonstrated indicating the process of biomass accumulation and breakthrough-channel formation. In addition, the effects of cell and biofilm sucrose concentration were significant on the biomass-plug development and permeability reduction rates. The modeling elucidated some deficiencies in our knowledge of the biomass yield stress that enables us to predict the stability of biomass plug against shear stress. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:107 / 119
页数:13
相关论文
共 25 条
[1]  
CHRISTENSEN B.E., 1990, BIOFILMS, P93
[2]   CHARACTERIZATION OF PORE STRUCTURE BY A COMBINATION OF QUANTITATIVE PHOTOMICROGRAPHY AND MERCURY POROSIMETRY [J].
DULLIEN, FAL ;
DHAWAN, GK .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1974, 47 (02) :337-349
[3]   Biofilm structural forms utilized in bioremediation of organic compounds [J].
Ebihara, T ;
Bishop, PL .
WATER SCIENCE AND TECHNOLOGY, 1999, 39 (07) :203-210
[4]  
FATT I, 1956, T AM I MIN MET ENG, V207, P144
[5]   PORE EVOLUTION AND CHANNEL FORMATION DURING FLOW AND REACTION IN POROUS-MEDIA [J].
HOEFNER, ML ;
FOGLER, HS .
AICHE JOURNAL, 1988, 34 (01) :45-54
[6]  
JACK TR, 1989, MICROBIAL ENHANCED O, pCH7
[7]   PERCOLATION AND CONDUCTION ON VORONOI AND TRIANGULAR NETWORKS - A CASE-STUDY IN TOPOLOGICAL DISORDER [J].
JERAULD, GR ;
HATFIELD, JC ;
SCRIVEN, LE ;
DAVIS, HT .
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1984, 17 (09) :1519-1529
[8]   Development of a biobarrier for the remediation of PCE-contaminated aquifer [J].
Kao, CM ;
Chen, SC ;
Liu, JK .
CHEMOSPHERE, 2001, 43 (08) :1071-1078
[9]  
KHILAR KC, 1998, MIGRATION FINES PORO, pCH7
[10]  
Kim DS, 2000, BIOTECHNOL BIOENG, V69, P47, DOI 10.1002/(SICI)1097-0290(20000705)69:1<47::AID-BIT6>3.0.CO