Please use this identifier to cite or link to this item:
Scopus Web of Science® Altmetric
Type: Journal article
Title: Considerations on the use of commercially available yeast biomass for the treatment of metal-containing effluents
Author: Simmons, Paul
Tobin, John M.
Singleton, Ian
Citation: Journal of Industrial Microbiology, 1995; 14(3):240-246
Publisher: Society for Industrial Microbiology
Issue Date: 1995
ISSN: 0169-4146
School/Discipline: School of Earth and Environmental Sciences : Soil and Land Systems
Statement of
Simmons, Paul; Tobin, John; Singleton, Ian
Abstract: Three strains ofSaccharomyces cerevisiae and one strain of aCandida sp. obtained from different industrial sources were screened for uptake of silver and copper. Considerable differences in metal uptake capacities were found between the different strains ofS. cerevisiae and betweenS. cerevisiae and theCandida sp. used. Copper uptake capacities ranged from 0.05 mmol g−1 dry wt to 0.184 mmol g−1 dry wt while values of 0.034 mmol Ag g−1 dry wt and 0.193 mmol Ag g−1 dry wt biomass were observed. Use of ion-selective electrodes (ISEs) enabled the detection of copper complexing agents (possibly proteins and carbohydrates) released by yeasts into the surrounding medium. In contrast, these compounds had no silver complexation abilities. Langmuir and Scatchard transformations of metal adsorption isotherms suggested differences in the mechanisms involved in metal uptake by the various yeasts. The differences between strains ofS. cerevisiae were due possibly to differences in cell wal composition. Different methods of preparation of biomass (fresh, air, oven and freeze-dried) had little effect on metal uptake in comparison with fresh biomass. Storage of fresh waste biomass at 4°C for 20 days had no effect on metal biosorption capacities. It was also observed that individual batches of waste biomass produced from different fermentation runs had consistent metal uptake capacities. The implications of the above results on the use of waste yeast biomass for treatment of metal-containing effluents are discussed.
Keywords: Yeast; Copper; Silver; Ion selective electrodes; Metal complexation; Metal uptake
Rights: © Springer
DOI: 10.1007/BF01569934
Appears in Collections:Soil and Land Systems publications

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.