Transport and adhesion of Escherichia coli JM109 in soil aquifer treatment (SAT): One-dimensional column study

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Bacteria transport and adhesion experiments under water-saturated and partially saturated conditions were examined over a wide range of ionic strength, from 1 to 100 mM KCl, CaCl2, and MgCl2, and at water contents of 0. 15 and 0.22 in sand columns packed with three different sands, baked, sterilized, and raw sands in order to investigate the effects of ionic strength, water content, and porous media type on the microbial adhesion in soil aquifer treatment (SAT). Well-characterized Escherichia coli JM 109 were used as model bacterial cells in this study. Column study results showed that bacterial deposition rates increased with increasing ionic strength and decreasing water content, and were higher in raw sand columns than those in other sand columns. The Derjaguin-Landau-Verwey-Overbeek (DLVO) theory was applied to experimental results in order to consider the interaction energies between the bacterial cells and collector grains; results revealed that a considerable amount of bacterial cells was weakly deposited onto the solid surfaces in secondary minimum.
Publisher
SPRINGER
Issue Date
2007-06
Language
English
Article Type
Article
Citation

ENVIRONMENTAL MONITORING AND ASSESSMENT, v.129, no.1-3, pp.9 - 18

ISSN
0167-6369
DOI
10.1007/s10661-006-9420-5
URI
http://hdl.handle.net/10203/200875
Appears in Collection
CE-Journal Papers(저널논문)
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