title: Metal uptake capacity of modified Saccharomyces pastorianus biomass from different types of solution.
abstract: In this paper, we investigate the effect of different biomass pretreatments on metal ion uptake by various biosorbents. Heat-treated as well as caustic-treated and ground biomass of Saccharomyces pastorianus was used to remove copper, lead and cadmium from various solutions. Untreated yeast was used as the control sample. The effect of yeast modification on sorption capacity depended on the different types of heavy metal ions and whether they were in single- or multi-component solutions. The highest uptake of copper and lead from a single-metal solution was obtained from heat-treated cells. Ground biomass was the most efficient at cadmium removal. However, the sorption capacity of the modified biomass did not improve when metal ions were removed from multi-component solutions. Indeed, the results in this paper show that optimizing metal removal from single-cation solutions can lead to decreased sorption capacity in multi-component solutions. Therefore, while adjusting the procedure of biomass modification, not only the nature of the metal ion being sorbed but also the chemical composition of the metal ion solution should be taken into account.
authors.affiliation: Institute of Fermentation Technology and Microbiology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, 171/173 Wolczanska Street, 90-924, Lodz, Poland. edyta.kordialik-bogacka@p.lodz.pl.
authors.forename: Edyta
authors.initials: E
authors.lastname: Kordialik-Bogacka
authors.affiliation: Institute of Fermentation Technology and Microbiology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, 171/173 Wolczanska Street, 90-924, Lodz, Poland.
authors.forename: Anna
authors.initials: A
authors.lastname: Diowksz
mesh_terms: D001673:Biodegradation, Environmental; D018533:Biomass; D002104:Cadmium / Q000737:chemistry; D003300:Copper / Q000378:metabolism; D008670:Metals / Q000032:analysis / Q000378:metabolism*; D012440:Saccharomyces / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism*
chemical_list: D008670:Metals; D014874:Water Pollutants, Chemical; D002104:Cadmium; D003300:Copper
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