Packed bed redistribution system for Cr(III) and Cr(VI) biosorption by Saccharomyces cerevisiae

Margarita E. Ramírez Carmona, Mônica A. Pereira da Silva, Selma G. Ferreira Leite, Oscar H. Vasco Echeverri, Carlos Ocampo-López

    Research output: Contribution to journalArticle in an indexed scientific journalpeer-review

    39 Scopus citations

    Abstract

    Saccharomyces cerevisiae yeast was immobilized on residual pumice for trivalent and hexavalent chromium solution adsorption inside a PVC column of 4.3. cm diameter, 140. cm length by using a novel redistribution system. Metallic solutions were fed through the packed bed column in order to establish breakthrough curves, inlet solution conditions were 300. mg/L and 200. mg/L for Cr(III) and Cr(VI) respectively, pH value for Cr(III) was 4.3 and 1.66 for Cr(VI), the effluent solution was analyzed at equal time intervals, obtaining breakthrough points of 240. min for Cr(III) and 300. min for Cr(VI). It was found that redistribution system for chromium removal by Saccharomyces cerevisiae increases contact sites between yeast and metallic ion due to liquid flow ability through the column and the results were better if compared with a fixed column without redistribution. Removal percentages of 53.7% and 60% for Cr(III) and Cr(VI) respectively were obtained.

    Original languageEnglish
    Pages (from-to)428-432
    Number of pages5
    JournalJournal of the Taiwan Institute of Chemical Engineers
    Volume43
    Issue number3
    DOIs
    StatePublished - May 2012

    Keywords

    • Biosorption
    • Breakthrough curve
    • Chromium
    • Packed bed Column
    • Redistributor
    • Saccharomyces cerevisiae

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