Title: Biosorption of Pb(II) from synthetic wastewater onto Pseudomonas aeruginosa

Authors: So-Young Kang, Jong-Un Lee, Kyoung-Woong Kim

Addresses: Center for Resource Management, Korea Institute for Defense Analyses (KIDA), Seoul 130 650, South Korea. ' Department of Civil, Geosystem, and Environmental Engineering, Chonnam National University, Gwangju 500 757, South Korea. ' Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500 712, South Korea

Abstract: The biosorption property onto Pseudomonas aeruginosa was represented by the Langmuir isotherm, and the maximum capacity of Pb(II) was 45 mg g⁻¹ dry weight of bacteria at pH 5. The biosorption capacity of Pb(II) in a binary system increased with increasing Pb(II) concentration, from 0 to 50 mg l⁻¹ in which Cr(III) existed at a constant concentration of 50 mg l⁻¹. This result indicates that there was no competitive adsorption reaction for the same binding sites on the bacterial surface, because the metal properties of Pb(II) and Cr(III) ions differ.

Keywords: Pseudomonas aeruginosa; Pb(II); biosorption; competition; removal efficiency; lead (II); wastewater treatment; lead removal; water pollution; heavy metals.

DOI: 10.1504/IJEP.2008.020791

International Journal of Environment and Pollution, 2008 Vol.34 No.1/2/3/4, pp.195 - 202

Published online: 16 Oct 2008 *

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