Please use this identifier to cite or link to this item: https://doi.org/10.1016/S1001-0742(09)60216-3
Title: Isolation, identification, Pb(II) biosorption isotherms and kinetics of a lead adsorbing Penicillium sp. MRF-1 from South Korean mine soil
Authors: Velmurugan, N.
Hwang, G.
Sathishkumar, M. 
Choi, T.K.
Lee, K.-J.
Oh, B.-T.
Lee, Y.-S.
Keywords: Biosorption
Heavy metal resistant fungus
Isotherms
Kinetics
Penicillium sp.
Issue Date: Jul-2010
Source: Velmurugan, N., Hwang, G., Sathishkumar, M., Choi, T.K., Lee, K.-J., Oh, B.-T., Lee, Y.-S. (2010-07). Isolation, identification, Pb(II) biosorption isotherms and kinetics of a lead adsorbing Penicillium sp. MRF-1 from South Korean mine soil. Journal of Environmental Sciences 22 (7) : 1049-1056. ScholarBank@NUS Repository. https://doi.org/10.1016/S1001-0742(09)60216-3
Abstract: A heavy metal contaminated soil sample collected from a mine in Chonnam Province of South Korea was found to be a source of heavy metal adsorbing biosorbents. Chemical analyses showed high contents of lead (Pb) at 357 mg/kg and cyanide (CN) at 14.6 mg/kg in the soil. The experimental results showed that Penicillium sp. MRF-1 was the best lead resistant fungus among the four individual metal tolerant fungal species isolated from the soil. Molecular characterization of Penicillium sp. MRF-1 was determined using ITS regions sequences. Effects of pH, temperature and contact time on adsorption of Pb(II) by Penicillium sp. MRF-1 were studied. Favorable conditions for maximum biosportion were found at pH 4 with 3 hr contact time. Biosorption of Pb(II) gradually increased with increasing temperature. Efficient performance of the biosorbent was described using Langmuir and Freundlich isotherms. Adsorption kinetics was studied using pseudo first-order and pseudo second-order models. Biosorbent Penicillium sp. MRF-1 showed the maximum desorption in alkali conditions. Consistent adsorption/desorption potential of the biosorbent in repetitive cycles validated the efficacy of it in large scale. SEM studies given notes on surface modification of fungal biomass under metal stress and FT-IR results showed the presence of amino groups in the surface structure of the biosorbent. In conclusion, the new biosorbent Penicillium sp. MRF-1 may potentially be used as an inexpensive, easily cultivatable material for the removal of lead from aqueous solution. © 2010 The Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences.
Source Title: Journal of Environmental Sciences
URI: http://scholarbank.nus.edu.sg/handle/10635/65735
ISSN: 10010742
DOI: 10.1016/S1001-0742(09)60216-3
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

14
checked on Dec 14, 2017

WEB OF SCIENCETM
Citations

14
checked on Nov 17, 2017

Page view(s)

22
checked on Dec 17, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.