Investigation of the role of chemotaxis in bacterial transport through saturated porous media using Taguchi approach

被引:6
作者
Biria, D. [1 ]
Balouchi, A. [2 ]
机构
[1] Univ Isfahan, Fac Adv Sci & Technol, Dept Biotechnol, Esfahan, Iran
[2] Univ Tehran, Fac Engn, Dept Civil Engn, Tehran, Iran
关键词
Bacterial transport; Porous media; Chemotaxis; Taguchi approach; Bacterial motility; Colloid filtration theory; PHYSICOCHEMICAL FILTRATION; RHAMNOLIPID BIOSURFACTANT; CRYPTOSPORIDIUM OOCYSTS; MICROBIAL TRANSPORT; DEPOSITION; SUBSURFACE; ADHESION; AQUIFER; MODEL; WATER;
D O I
10.1016/j.colsurfa.2013.07.033
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
It is generally agreed today that effective parameters such as ionic strength, surfactant concentration and the flow rate of the containing fluid have a significant impact on the bacterial transport through porous media. The present study aimed to investigate whether chemotaxis can equally contribute to bacterial deposition in the same environments. To this end, a series of experiments were designed using Taguchi approach in which saturated glass bead packed columns served as the porous media and naphthalene was used as chemo-attractant. Then the contributory role of the factors involved in bacterial filtration through porous media was carefully measured by employing related statistical analyses. The results revealed that the percentage value of chemotaxis contribution to the process was about 20% which was significant compared with ionic strength (43%), surfactant concentration (32%) and fluid flow rate (3%). Notably, the minimum bacterial transport through the columns was about 0.41 of the initial inlet concentration at optimal conditions. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:542 / 548
页数:7
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