BREWERY YEAST AS A BIOSORBENT FOR URANIUM

Citation
Nb. Omar et al., BREWERY YEAST AS A BIOSORBENT FOR URANIUM, Journal of Applied Bacteriology, 81(3), 1996, pp. 283-287
Citations number
16
Categorie Soggetti
Microbiology,"Biothechnology & Applied Migrobiology
ISSN journal
00218847
Volume
81
Issue
3
Year of publication
1996
Pages
283 - 287
Database
ISI
SICI code
0021-8847(1996)81:3<283:BYAABF>2.0.ZU;2-L
Abstract
Yeast cells are capable of carrying out biosorption with various heavy metals. The biomass deriving from Saccharomyces cerevisiae coming fro m brewing industries is a by-product that is possible to be used in th e purification of water contaminated with these ions. In this paper we show that yeast biomass from one of the city's breweries can adsorb u ranium efficiently, up to 2.4 mmol of this metal per gram of dry bioma ss. It can also be seen that the temperature (between 10 degrees and 3 7 degrees C) has no effect on the biosorption, while pH does have an i nfluence, 4.5 being the best value. When the concentrations of uranium range between 0.1 and 0.5 mol l(-1) the yeast dry biomass is capable of adsorbing between 84% and 98% of this metal in solution.