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Studies on the biosorption of Pb(II) ions using Pseudomonas putida

Vimalnath, S and Subramanian, S (2018) Studies on the biosorption of Pb(II) ions using Pseudomonas putida. In: Separation Science and Technology (Philadelphia), 53 (16). pp. 2550-2562.

Full text not available from this repository.
Official URL: https://doi.org/10.1080/01496395.2018.1464025


The complete removal of Pb(II) was achieved by intact Pseudomonas putida cells. The biosorption isotherm exhibited Langmuirian behaviour and followed pseudo-second-order rate kinetics. The standard Gibbs free energy change (∆G°) for the biosorption of Pb(II) ions was found to be −26.4 kJ mol−1, attesting to a chemisorption process. Thermolysis of P. putida cells improved the Pb(II) binding capacity by around 27%. All the four components tested, namely DNA, protein, polysaccharide and lipid, were found to contribute to the uptake of Pb(II) ions. The possible mechanisms of Pb(II) binding by P. putida have been delineated.

Item Type: Journal Article
Publication: Separation Science and Technology (Philadelphia)
Publisher: Taylor and Francis Inc.
Additional Information: The copyright for this article belongs to the Taylor & Francis.
Keywords: Bacteria; Binding energy; Biosorption; Free energy; Gibbs free energy; Ions, Binding capacities; Biosorption isotherms; Gibbs free energy changes; Possible mechanisms; Pseudo-second order rates; Pseudomonas putida; SDS PAGE, Lead compounds
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 03 Aug 2022 06:19
Last Modified: 03 Aug 2022 06:19
URI: https://eprints.iisc.ac.in/id/eprint/75165

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