Sorption of Cd(II) and Pb(II) by exopolymeric substances (EPS) extracted from activated sludges and pure bacterial strains: modeling of the metal/ligand ratio effect and role of the mineral fraction.
作者： Gilles Guibaud , Eric van Hullebusch , François Bordas , Paul d’Abzac , Emmanuel Joussein
DOI: 10.1016/J.BIORTECH.2009.01.040
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摘要: The present study deals with the sorption of Cd(II) and Pb(II) by exopolymeric substances (EPS) extracted from activated sludges or pure bacterial strains. percentage sorbed metal increases concentration EPS-water solution. always presents a higher affinity than for EPS. For EPS strains, only one global binding constant simple equilibrium model, may be used to assess effect microbial products such as on speciation mobility in environment. However, sludges, wide variation constants determined do not permit approach. differences metals between two types (bacterial, sludges) could explained composition: organic macromolecules, well nature mineral fraction.
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