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Updated: Jul 27, 2026

Extraction of Structural Extracellular Polymeric Substances from Aerobic Granular Sludge
Published on: September 26, 2016
Anions effects on biosorption of Mn(II) by extracellular polymeric substance (EPS) from Rhizobium etli
W Pulsawat1, N Leksawasdi, P L Rogers
1Biopolymer Research Group, School of Biotechnology and Biomolecular Sciences (BABS), University of New South Wales, NSW 2250, Australia.
Abstract:
Microbial extracellular polymeric substances (EPS) are potential biosorbents for metal remediation and recovery. The Langmuir and Freundlich kinetics of Mn(II) binding by the EPS from a novel Mn(II) oxidising strain of Rhizobium etli were determined. Maximum manganese specific adsorptions (q(max)) decreased in the sequence: sulphate (62 mg Mn per g EPS) > nitrate (53 mg g(-1)) > chloride (21 mg g(-1)). Consideration of the anion during kinetic studies is usually neglected but is important in providing more practical and comparable data between different biosorbent systems.
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