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Cited by 532

The DOI matches its Crossref record; 30 of the 30 references it cites were found in a registry or an index.

Bacterial Adhesion and Transport in Porous Media: Role of the Secondary Energy Minimum

Redman, Jeremy A., Walker, Sharon L., Elimelech, Menachem·2004·Environmental Science & Technology

Abstract

The adhesion of a well-characterized Escherichia coli bacterial strain to quartz sediment grains in the presence of repulsive electrostatic interactions is systematically examined. An increase in the ionic strength of the pore fluid results in an increase in bacterial attachment, despite DLVO calculations indicating a sizable electrostatic energy barrier to deposition. Bacterial deposition is likely occurring in the secondary energy minimum, which DLVO calculations indicate increases in depth with ionic strength. A decrease in the ionic strength of the pore fluid--thereby eliminating the secondary energy minimum--resulted in release of the majority of previously deposited bacteria, suggesting that these cells were deposited reversibly in the secondary minimum. Additionally, bacterial attachment to a quartz surface in a radial stagnation point flow system was absent at ionic strengths less than 0.01 M and resulted in attachment efficiencies over an order of magnitude lower than in the packed-bed column experiments at higher ionic strengths. Because of the hydrodynamics in the radial stagnation point flow system, this observation supports our conclusion that the majority of bacterial deposition in the packed bed occurs in a secondary energy minimum.

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Metadata

Authors
Redman, J. A., Walker, S. L., & Elimelech, M.
Venue
Environmental Science & Technology
Published
2004-02-10
Volume
38
Issue
6
Pages
1777-1785
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W2084416937
Cited by
532
References
30
FWCI
36.71
Type
journal article
Language
en
Open access
closed

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