| Characteristics of Zn2+ biosorption by Saccharomyces cerevisiae. | |
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MedLine Citation:
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PMID: 18348406 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To investigate the characteristics of Zn2+ biosorption and the release of cations during the process of Zn2+ biosorption by intact cells of Saccharomyces cerevisiae. METHODS: The batch adsorption test was used to study the biosorption equilibrium and isotherm. Zn2+ concentration was measured with atomic adsorption spectrophotometer (AAS) AAS 6 Vario. RESULTS: When the initial concentration of Zn2+ ranged between 0.08 and 0.8 mmol/L, the initial pH was natural (about 5.65), the sorbent concentration was about 1 g/L and the capacity of Zn2+ biosorption was from 74.8 to 654.8 micromol/g. The pH value increased by 0.55-1.28 and the intracellular cations (K+, Mg2+, Na+, Ca2+) of the cells were released during the process of Zn2+ biosorption. CONCLUSION: Ion exchange was one of the mechanisms for Zn2+ biosorption. The biomass of Saccharomyces cerevisiae is a potential biosorbent for the removal of Zn2+ from aqueous solution. More work needs to be done before putting it into practical application. |
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Authors:
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Can Chen; Jian-Long Wang |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Biomedical and environmental sciences : BES Volume: 20 ISSN: 0895-3988 ISO Abbreviation: Biomed. Environ. Sci. Publication Date: 2007 Dec |
Date Detail:
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Created Date: 2008-03-19 Completed Date: 2008-06-03 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8909524 Medline TA: Biomed Environ Sci Country: United States |
Other Details:
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Languages: eng Pagination: 478-82 Citation Subset: IM |
Affiliation:
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Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Hydrogen-Ion Concentration Saccharomyces cerevisiae / metabolism* Spectrophotometry, Atomic Zinc / metabolism* |
| Chemical | |
Reg. No./Substance:
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7440-66-6/Zinc |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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