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Effects of Microorganisms on Redox Potential and Mobility of Antimony in Natural Settings
http://hdl.handle.net/10458/6896
http://hdl.handle.net/10458/6896637f8a14-bb9a-4238-ad7a-c7dfa55ef9fe
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
本文 (558.0 kB)
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| Item type | 会議発表論文 / Conference Paper(1) | |||||
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| 公開日 | 2020-06-22 | |||||
| タイトル | ||||||
| タイトル | Effects of Microorganisms on Redox Potential and Mobility of Antimony in Natural Settings | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Antimony, Microorganism, Reduction, Oxidation, Mobility | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
| 資源タイプ | conference paper | |||||
| 著者 |
Jong-Un, Lee
× Jong-Un, Lee× Van, Khanh Nguyen |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | To date, little information is available on the microbial oxidation and reduction of antimony (Sb). The biogeochemical effects of microorganisms on redox potential and mobility of Sb were investigated. A dissimilatory Sb(V)-reducing bacterium was isolated from stream sediment samples contaminated with Sb (3,069 mg/kg). This anaerobic rod-shaped bacterium reduced Sb(V) and grew through respiration using Sb(V) and acetate at pH 7.7. A part of Sb(III) which was produced in anoxic minimal medium precipitated as a biomineral which was likely Sb(OH)3. Phylogenetic analysis indicated that the bacterium is likely a novel strain of the Sinorhizobium genus. Tn addition, 12 Sb-resistant aerobic bacteria were isolated from the same sediment samples, and eight of these strains were heterotrophic Sb(III)-oxidizing bacteria. Phylogenetically, the Sb(III)-oxidizers fell within ß- and y-subdivisions of Proteobacteria. Among them, Cupriavidus sp. NL4 completely oxidized 100 μmoles/L Sb(III) in 500 hours. The results suggest that microorganisms may play a significant role in changing the redox state and thus geochemical fates of Sb in geological media. | |||||
| 言語 | en | |||||
| 書誌情報 |
en : International Conference on Applied Electrical and Mechanical Engineering 2019 p. 74-76, 発行日 2019-09 |
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| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
