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Title: Contribution of cell outer membrane and inner membrane to Cu2+ adsorption by cell envelope of Pseudomonas putida 5-x
Authors: Wang, L
Zhou, Q
Chua, H
Keywords: Adsorption isotherm
Cu2+ adsorption capacity
Inner membrane
Outer membrane
Pseudomonas putida
Issue Date: 2004
Publisher: Marcel Dekker Inc
Source: Journal of environmental science and health - part a toxic/hazardous substances & environmental engineering, 2004, v. 39, no. 8, p. 2071-2080 How to cite?
Journal: Journal of Environmental Science and Health Part A-Toxic/Hazardous Substances & Environmental Engineering 
Abstract: The role of outer and inner membrane in the Cu2+ adsorption process by gram-negative bacterium Pseudomonas putida 5-x, which was isolated from local electroplating effluent with high Cu2+ accumulating capability, was studied. The results indicate that both the outer and inner membrane exhibited high Cu2+ adsorption capacity. Outer and inner membrane contributed about 30-35% and 20-25% parts of adsorption capacity in Cu2+ adsorption by cell envelope of Pseudomonas putida 5-x, respectively. The total contribution of outer and inner membrane to Cu2+ adsorption by cell envelope was much greater than that of peptidoglycan layer. The relatively high phospholipid content in the outer membrane might result in its greater heavy metal ions adsorption capacity. The Cu2+ binding process by the outer and inner membrane of Pseudomonas putida 5-x is the adsorption processes and can be described with Freundlic isotherms.
ISSN: 1093-4529
DOI: 10.1081/ESE-120039375
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