Please use this identifier to cite or link to this item: https://hdl.handle.net/1822/22341

TitleRemoval of heavy metals using a brewer's yeast strain of Saccharomyces cerevisiae: chemical speciation as a tool in the prediction and improving of treatment efficiency of real electroplating effluents
Author(s)Machado, Manuela D.
Soares, Eduardo V.
Soares, Helena M. V. M.
KeywordsBioremediation
Biosorption
Chemical speciation
Heavy metals
Metals bioavailability
Issue date2010
PublisherElsevier
JournalJournal of Hazardous Materials
CitationMachado, M. D., Soares, E. V., & Soares, H. M. V. M. (2010, August 15). Removal of heavy metals using a brewer's yeast strain of Saccharomyces cerevisiae: Chemical speciation as a tool in the prediction and improving of treatment efficiency of real electroplating effluents. Journal of Hazardous Materials. Elsevier BV. http://doi.org/10.1016/j.jhazmat.2010.04.037
Abstract(s)In the present work, the influence of the competitive effect of inorganic ligands (carbonates, chlorides, fluorides, phosphates, nitrates and sulphates), which can be present in real multi-metal electroplating effluents, on the biosorption of chromium, copper, nickel and zinc ions by yeast cells of Saccharomyces cerevisiae was rationally examined. Additionally, chemical speciation studies allowed optimizing the amount of yeast biomass to be used in the treatment of effluents contaminated with nickel. The applicability of chemical simulation studies was tested using two simulated effluents and validated using one real electroplating effluent, all containing high concentrations of nickel (about 303 μmol l−1). For nickel removal, heat-killed biomass of a brewing flocculent strain of S. cerevisiae was used, in a batch mode. After the implementation of the bioremediation process (12 g dry weight l−1 of yeast cells), the concentration of nickel in the real effluent (34 μmol l−1) reached the quality criteria for industrial effluents discharge, after the second or third batch according to the U.S.-Environmental Protection Agency and Portuguese law, respectively. This corresponded to a removal of nickel of 89%.
TypeArticle
URIhttps://hdl.handle.net/1822/22341
DOI10.1016/j.jhazmat.2010.04.037
ISSN0304-3894
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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