論文 - 詳細
| RRC ID | 15634 |
|---|---|
| 著者 | Yamamura S, Watanabe M, Kanzaki M, Soda S, Ike M. |
| タイトル | Removal of arsenic from contaminated soils by microbial reduction of arsenate and quinone. |
| ジャーナル | Environ Sci Technol |
| Abstract |
We investigated bioremediation of As-contaminated soils by reductive dissolution of As using a dissimilatory As(V)-reducing bacterium (DARB), Bacillus selenatarsenatis SF-1. We also examined the effect of anthraquinone-2,6-disulfonate (AQDS), an extracellular electron-shuttling quinone, on the As extraction. When B. selenatarsenatis was incubated with As(V)-laden Al precipitates, no acceleration of As dissolution was observed in the presence of AQDS, even though the microbial reduction of AQDS occurred actively. In contrast, AQDS addition significantly enhanced the reductive dissolution of As and Fe in analogous experiments with As(V)-laden Fe(III) precipitates, whereas As dissolution did not occur in the absence of the As(V) reducer. These results indicate the dissolution of As was accelerated by indirect reduction of solid-phase Fe(III) following microbial AQDS reduction, although As(V) reduction is vital for As extraction. B. selenatarsenatis was able to extract As from two types of industrially contaminated soils through reduction of solid-phase As(V) and Fe(III). The copresence of AQDS with B. selenatarsenatis improved the removal efficiency of As from the contaminated soils, concomitantly releasing Fe(II), suggesting that simultaneous use of DARB and electron-shuttling compounds can be an effective strategy for remediation of As-contaminated soils. |
| 巻・号 | 42(16) |
| ページ | 6154-9 |
| 公開日 | 2008-8-15 |
| DOI | 10.1021/es703146f |
| PMID | 18767680 |
| MeSH | Arsenates / metabolism* Arsenic / chemistry* Bacillus / metabolism* Benzoquinones / metabolism* Biodegradation, Environmental Soil / analysis* Soil Pollutants / metabolism |
| IF | 7.864 |
| 引用数 | 26 |
| WOS 分野 | ENVIRONMENTAL SCIENCES ENGINEERING, ENVIRONMENTAL |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 最多言及媒体 | Patent(IFI CLAIMS) |
| 各媒体での言及数の合計 | 2 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| 一般微生物 | JCM 10885 |