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Biosorption of chromium(VI) and arsenic(V) onto methylated yeast biomass

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Title: Biosorption of chromium(VI) and arsenic(V) onto methylated yeast biomass
Authors: Seki, Hideshi Browse this author →KAKEN DB
Suzuki, Akira Browse this author
Maruyama, Hideo Browse this author →KAKEN DB
Keywords: Biosorption
Methylated yeast biomass
Issue Date: 15-Jan-2005
Publisher: Elsevier
Journal Title: Journal of Colloid and Interface Science
Volume: 281
Issue: 2
Start Page: 261
End Page: 266
Publisher DOI: 10.1016/j.jcis.2004.08.167
PMID: 15571680
Abstract: Yeast biomass was methylated in a 0.1 M HCl methyl alcohol solution at room temperature and the methylated yeast (MeYE) was applied to the adsorptive separation of Cr(VI) and As(V) anions from aqueous solutions. At near neutral pH, while Cr(VI) and As(V) anions were scarcely adsorbed onto unmethylated yeast biomass, their adsorbed amounts increased with increasing methylation degree. The amount of Cr(VI) adsorbed onto MeYE was almost constant at pH4 - 6 and decreased with increasing pH above pH 6. The adsorbed amount of As(V) onto MeYE was rather lower than that of Cr(VI) and it had a peak at about pH 7. A metal-binding model was used to describe the adsorption characteristics of Cr(VI) and As(V) onto MeYE. The results showed that MeYE has two different types of adsorption sites. The saturated adsorbed amount of Cr(VI) and As(V) onto MeYE having methylation degree 0.94 was 0.55 mmol g-1.
Type: article (author version)
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 関 秀司

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