Pb2+ Biosorption by Pretreated Fungal Biomass

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Turkish Journal of Biology
Volume:29 Issue:1
Pb2+ Biosorption by Pretreated Fungal Biomass

Pb2+ Biosorption by Pretreated Fungal Biomass

Authors : Ahmet ÇABUK, Semra İLHAN, Cansu FİLİK, Figen ÇALIŞKAN

Pages : 23-28

View : 19 | Download : 9

Publication Date : 2005-12-01

Article Type : Research Paper

Abstract :The effect of pretreatment on the Pb2+ biosorption capacity of fungal biomasses, Aspergillus versicolor, Metarrhizium anisopliae var. anisopliae, and Penicillium verrucosum, was investigated. For this purpose, the biomasses were subjected to physical treatments such as heat and autoclaving, and chemical treatments such as sodium hydroxide, formaldehyde, gluteraldehyde, acetic acid, hydrogen peroxide, commercial laundry detergent, orthophosphoric acid and dimethyl sulfoxide. Dimethyl sulfoxide, hydrogen peroxide and gluteraldehyde increased biosorption of Pb2+ in comparison with the A. versicolor live biomass. M. anisopliae var. anisopliae biomass pretreated with hydrogen peroxide, gluteraldehyde, commercial laundry detergent, dimethyl sulfoxide and formaldehyde significantly improved biosorption of Pb2+ in comparison with live biomass. Pretreatment with all methods of P. verrucosum increased biosorption of Pb2+ in comparison with live biomass. The maximum biosorption capacity of A. versicolor biomass subjected to dimethyl sulfoxide was 30.6 mg g-1.
Keywords : Aspergillus, Metarrhizium, Penicillium, pretreatment, fungal biomass, lead

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