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

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

35 Citas (Scopus)

Resumen

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.

Idioma originalInglés
Páginas (desde-hasta)428-432
Número de páginas5
PublicaciónJournal of the Taiwan Institute of Chemical Engineers
Volumen43
N.º3
DOI
EstadoPublicada - may. 2012
Publicado de forma externa

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