A comparative study of various biosorbents for removal of chromium(VI) ions from industrial waste waters

Chromium(VI) biosorption to non-living biomass of Chlorella vulgaris, Clodophara crispata, Zoogloea ramigera, Rhizopus arrhizus and Saccharomyces cerevisiae was investigated. The initial pH of the metal ion solution effected metal uptake capacity of the biomass and the optimum initial pH was found a...

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Bibliographic Details
Published in:Process biochemistry (1991) 1994, Vol.29 (1), p.1-5
Main Authors: Nourbakhsh, M., Sag̃, Y., Özer, D., Aksu, Z., Kutsal, T., Çag̃lar, A.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Biological treatment of waters
Biotechnology
Environment and pollution
Fundamental and applied biological sciences. Psychology
Industrial applications and implications. Economical aspects
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Summary:Chromium(VI) biosorption to non-living biomass of Chlorella vulgaris, Clodophara crispata, Zoogloea ramigera, Rhizopus arrhizus and Saccharomyces cerevisiae was investigated. The initial pH of the metal ion solution effected metal uptake capacity of the biomass and the optimum initial pH was found as 1·–2·0 for all microorganisms. Maximum adsorption rates of metal ions to microbial biomass were obtained at temperatures in the range 25–35°C. The adsorption rate increased with increasing metal ion concentration for C. vulgaris, C. crispata, R. Arrhizus, S. cerevisiae and Z. ramigera up to 200, 200, 125, 100 and 75 mg/litre, respectively. Freundlich constants were determined from the Freundlich adsorption isotherms of all microorganisms.
ISSN:1359-5113
1873-3298
DOI:10.1016/0032-9592(94)80052-9