Transport of bacteria in porous media and its enhancement by surfactants for bioaugmentation: A review.
The success of bioaugmentation processes for groundwater bioremediation requires efficient transport of bacteria in the subsurface environment. In this paper, the factors that influence transport of bacterial cells in porous media are reviewed and the effects of surfactants on the transport are discussed. Movement of bacterial cells in porous media is a process driven by advection and hydrodynamic dispersion forces of fluids. Immobilization of bacterial cells takes place due to processes such as adsorption and straining. Blocking and ripening along with bacterial migration process decrease and increase the retention of cells in porous media, respectively. Physicochemical properties of the porous media, groundwater chemistry, and properties of the bacterial cells affect the transport behavior. Surfactants have the potential to modify bacterial surface properties for both bacterial cells and medium solids, and thus enhance bacterial transport.
State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, Hubei 430072, China; School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan, Hubei 430072, China; College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China. Electronic address: zhonghua21cn@126.com.
Hua
H
Zhong
State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, Hubei 430072, China; School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan, Hubei 430072, China. Electronic address: gsliu0615@163.com.
Guansheng
G
Liu
The Sericultural Research Institute of Hunan Province, Changsha, Hunan 410127, China.
Yongbing
Y
Jiang
State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, Hubei 430072, China; School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan, Hubei 430072, China.
Jinzhong
J
Yang
College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China.
Yang
Y
Liu
College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China.
Xin
X
Yang
College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China.
Zhifeng
Z
Liu
College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China.
Guangming
G
Zeng
D000327:Adsorption; D001419:Bacteria / Q000187:drug effects / Q000378:metabolism; D018407:Bacterial Physiological Phenomena; D001673:Biodegradation, Environmental; D002465:Cell Movement / Q000187:drug effects; D003470:Culture Media / Q000737:chemistry*; D016062:Porosity; D013501:Surface-Active Agents / Q000494:pharmacology*
D003470:Culture Media; D013501:Surface-Active Agents
Adsorption; Advection-dispersion; Bacterial transport; Bioaugmentation; Straining; Surfactants