Environmental implications and the tendency of heavy metals to accumulate in selected tissues of plants and animals, as well as their overall potential to be toxic even at relatively minor levels of exposure, are a source of concern. The use of cheap and effective biological means for heavy metal remediation has been advocated. This study examines the biosorption and bioaccumulation of ferrous ion by Aspergillus terreus (A. terreus) and Trichoderma viride (T. viride) in a batch system. The effects of some important parameters, such as initial metal concentration, temperature and inoculum concentration on biosorption capacity were examined. Langmuir, Freudlinch, Temkin and Dubinin–Radushkevich models were applied to explain the biosorption isotherms of Fe(II) onto the biosorbents. The process fitted well into pseudo first order kinetic model and was best explained by the Langmuir isotherm with maximum absorption capacity of 6.33 and 7.50 mg/g for A. terreus and T. viride, respectively. The calculated thermodynamic parameters (ΔG°, ΔH° and ΔS°) showed that the biosorption of the ferrous ion to the organisms is feasible, spontaneous and exothermic in nature at low temperature.
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February 2014
This article was originally published in
Journal of Water Supply: Research and Technology-Aqua
Article Contents
Research Article|
November 15 2013
Biosorption studies for the removal of ferrous ion from aqueous solution by Aspergillus terreus and Trichoderma viride: kinetic, thermodynamic and isothermal parameters
Sarafadeen Olateju Kareem;
Sarafadeen Olateju Kareem
1Department of Microbiology, Federal University of Agriculture, Abeokuta, Nigeria
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Abideen Idowu Adeogun;
2Department of Chemistry, Federal University of Agriculture, Abeokuta, Nigeria
E-mail: [email protected]
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S. O. Omeike
S. O. Omeike
1Department of Microbiology, Federal University of Agriculture, Abeokuta, Nigeria
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Journal of Water Supply: Research and Technology-Aqua (2014) 63 (1): 66–75.
Article history
Received:
June 04 2013
Accepted:
September 26 2013
Citation
Sarafadeen Olateju Kareem, Abideen Idowu Adeogun, S. O. Omeike; Biosorption studies for the removal of ferrous ion from aqueous solution by Aspergillus terreus and Trichoderma viride: kinetic, thermodynamic and isothermal parameters. Journal of Water Supply: Research and Technology-Aqua 1 February 2014; 63 (1): 66–75. doi: https://doi.org/10.2166/aqua.2013.109
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