Mechanism of humic acid colour removal from natural waters by fungal biomass biosorption


Zhou, J.L. and Banks, C.J. (1993) Mechanism of humic acid colour removal from natural waters by fungal biomass biosorption. Chemosphere, 27, (4), 607-620. (doi:10.1016/0045-6535(93)90096-N).

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Description/Abstract

Removal of humic acid (HA) colour from natural waters by biosorption on Rhizopus arrhizus was studied. Experimental results demonstrated the dependence of adsorption on solution characteristics such as pH, ionic strength, concentration of metal ions and temperature. The observed effects were attributed to the pH dependence of humic acid solubility and surface charge of humic acid and fungal biomass. The biosorptive capacity of fungal cellular fractions was compared with the finding that chitin/chitosan was the major active component of R. arrhizus for humic acid uptake and this was confirmed by experiments on the effects of culture age, growth medium composition and biomass pre-treatment with caustic solutions on fungal sorptive capacity. Desorption experiments showed nearly all of the sorbed humic acid could be eluted, suggesting that the fungal biosorbents can be reused.

Item Type: Article
ISSNs: 0045-6535
1879-1298
Keywords: biosorption, humic substances, fungal biomass, chitin, chitosan, desorption
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: University Structure - Pre August 2011 > School of Civil Engineering and the Environment
ePrint ID: 74915
Date Deposited: 11 Mar 2010
Last Modified: 27 Mar 2014 18:53
URI: http://eprints.soton.ac.uk/id/eprint/74915

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