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Transport of bacteria in porous media and its enhancement by surfactants for bioaugmentation: A review
Biotechnology Advances ( IF 16.0 ) Pub Date : 2017-03-23 , DOI: 10.1016/j.biotechadv.2017.03.009
Hua Zhong , Guansheng Liu , Yongbing Jiang , Jinzhong Yang , Yang Liu , Xin Yang , Zhifeng Liu , Guangming Zeng

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.



中文翻译:

细菌在多孔介质中的运输及其表面活性剂对生物增强的增强作用:综述

地下水生物修复的生物强化过程的成功需要地下环境中细菌的有效运输。本文综述了影响细菌细胞在多孔介质中运输的因素,并讨论了表面活性剂对运输的影响。细菌细胞在多孔介质中的运动是由流体的对流和流体动力分散力驱动的过程。细菌细胞的固定化是由于诸如吸附和过滤之类的过程而发生的。阻塞和成熟以及细菌迁移过程分别减少并增加了细胞在多孔介质中的保留。多孔介质的物理化学性质,地下水化学性质和细菌细胞的性质会影响运输行为。

更新日期:2017-03-23
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