Please use this identifier to cite or link to this item: https://doi.org/10.2166/wst.2007.033
Title: Removal of As(V) and As(III) from water with a PEI-modified fungal biomass
Authors: Deng, S.
Ting, Y.P. 
Keywords: Arsenic removal
Biosobent
PEI-modified fungal biomass
Sorption performance
Issue Date: 2007
Source: Deng, S., Ting, Y.P. (2007). Removal of As(V) and As(III) from water with a PEI-modified fungal biomass. Water Science and Technology 55 (1-2) : 177-185. ScholarBank@NUS Repository. https://doi.org/10.2166/wst.2007.033
Abstract: A novel biosorbent was prepared by chemically grafting polyethylenimine (PEI) on the fungal biomass of Penicillium chrysogenum through a two-step reaction. The PEI-rnodified biomass was found to possess zero zeta potential at pH 10.4. Owing to the protonation of amine groups on the biosorbent surface, the biosorbent is favourable for the removal of anionic arsenic species in water. The sorption capacity for As(V) at pH 3 increased by 5.7-fold after surface modification. The sorption performances including kinetics and isotherm were investigated and several models were used to describe the experimental data. The pseudo-second-order model described the kinetic data better, while the Langmuir equation was the better model to fit the isotherm data. The corresponding thermodynamic parameters for As(V) and As(III) sorption were also calculated. © IWA Publishing 2007.
Source Title: Water Science and Technology
URI: http://scholarbank.nus.edu.sg/handle/10635/64507
ISBN: 1843395819
ISSN: 02731223
DOI: 10.2166/wst.2007.033
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