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Publication Type
Journal Article
Author, Analytic
Spence, A.; Robinson, C.
Author Affiliation, Ana.
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Article Title
Spectro-chemical analysis of the speciation of cadmium on montmorillonite in the presence of soil microbial biomass
Medium Designator
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Connective Phrase
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Journal Title
Procedia Environmental Sciences
Translated Title
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Reprint Status
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Date of Publication
2013
Volume ID
18
Issue ID
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Page(s)
114-126
Language
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Connective Phrase
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Location/URL
http:; ac.els-cdn.com/S1878029613001485/1-s2.0-S1878029613001485-main.pdf?_tid=984abb74-7663-11e4-afa7-00000aacb35d&acdnat=1417113265_599b50909f7fe77089919d6463aa9e2b
ISSN
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Notes
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Abstract
Here we report on a spectro-chemical approach to investigate the adsorption of dissolved Cd ions to montmorillonite (M) in the presence of a mixed consortium of soil bacteria. Results indicate that the order of metal-loading was M- microbial complex > microbial biomass > M. Surface interactions of Cd with M-microbial complex have also been confirmed, and we speculate that after binding to M, additional proton binding sites on microbial cells function as binding sites for Cd ions thereby enhancing the metal binding capacity of the mineral. There is also evidence to suggest that hydrogen bonding, cation bridging and ion-exchange are important mechanisms in the adsorption of metal ions to clay-organo complexes.....
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