Biosorption of Pb(II) by Biomass of KC-2: Kinetic, Equilibrium and Characteristic Studies

Authors: Ou1, Hong-Xiang; Wang, Qian; Xue, Yong-Lai; Pan, Jian-Ming; Du, Dao-Lin; Yan, Yong-Sheng

Source: Water Environment Research, Volume 83, Number 12, December 2011 , pp. 2148-2153(6)

Publisher: Water Environment Federation

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Abstract:

Performance and characteristics of biosorption of Pb(II) had been studied in a batch system using the fungal strain biomass, KC-2. The biosorption performance was investigated by analysing the effects of such factors as the initial pH, initial Pb(II) concentration, and contact time at 303 K. The maximum Pb(II) adsorption was obtained at pH 5.0. The experimental data were described by the pseudo first-order, pseudo second-order and intraparticle diffusion kinetic models, and were closely followed the pseudo second-order kinetic model. The equilibrium experimental data were well fitted to Langmuir model and the maximum biosorption capacity was 84.03 mg g−1. The adsorption mechanism was examined by FTIR, SEM and EDAX analysis. Results indicated that carboxylic, hydroxyl and amine groups were involved in the biosorption and ion exchange mechanism existed.

Keywords: Adsorption isotherms; Kinetic models; Pb(II) biosorption

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/106143011X12928814445294

Publication date: December 1, 2011

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

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