Element Desorption from and Crystal Dissolution of a Smectite by Interaction with the Bacteria Escherichia coli and/or Varied Amino Acids

K Semhi, S Bani, N Clauer and A Sayeigh
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S Bani: Sultan Qaboos University, Oman
N Clauer: Institut de Physique du Globe de Strasbourg (UdS-CNRS), France
A Sayeigh: Ministry of Municipality Affairs and Urban Planning, Bahrain

International Journal of Environmental Sciences & Natural Resources, 2019, vol. 23, issue 1, 06-22

Abstract: Three-week experiments were completed to evaluate the interaction of the bacteria Escherichia coli and amino acids (glutamic acid, alanine, arginine, serine and leucine) on the dissolution and/or desorption rates of a smectite-type clay mineral. A systematic dominant leaching of Na confirms that the initial smectite was Na-enriched. The bacteria Escherichia coli induced leaching of a Si/Al ratio far from that released by either the amino acids or by a combination of the bacteria and amino acids. Conversely, this ratio is close to the value of the smectite itself. Therefore, the bacteria has a probable dissolution impact rather than a desorption action. This preferential action is indirectly corroborated by a low removal of Na by the bacteria. Removal impact of the bacteria on the smectite decreased when mixed with any of the amino acid.

Keywords: earth and environment journals; environment journals; open access environment journals; peer reviewed environmental journals; open access; juniper publishers; ournal of Environmental Sciences; juniper publishers journals; juniper publishers reivew (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:adp:ijesnr:v:23:y:2019:i:1:p:06-22

DOI: 10.19080/IJESNR.2019.23.556103

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