A novel biofilm bioreactor derived from a consortium of acidophilic arsenite-oxidizing bacteria for the cleaning up of arsenite from acid mine drainage
© 2020. Springer Science+Business Media, LLC, part of Springer Nature.
| Veröffentlicht in: | Ecotoxicology (London, England). - 1992. - 30(2021), 7 vom: 10. Sept., Seite 1437-1445 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2021
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| Zugriff auf das übergeordnete Werk: | Ecotoxicology (London, England) |
| Schlagworte: | Journal Article Acid mine drainage Acidophilic bacteria Arsenite-oxidizing bacteria As(III)-contaminated acidic wastewater Biofilm bioreactor aioA gene diversity Arsenites |
| Zusammenfassung: | © 2020. Springer Science+Business Media, LLC, part of Springer Nature. Arsenite (As(III)) was considered to be of great concern in acid mine drainage (AMD). A promising approach for cleaning up of arsenite from AMD is microbial oxidation of As(III) followed by adsorptions. However, there is virtually no research about the acidophilic bioreactor for As(III) oxidation so far. In this study, we formed a new biofilm bioreactor with a consortium of acidophilic As(III) oxidation bacteria. It is totally chemoautotrophic, with no need to add any carbon or other materials during the operations. It works well under pH 3.0-4.0, capable of oxidizing 1.0-20.0 mg/L As(III) in 3.0-4.5 h, respectively. A continuous operation of the bioreactor suggests that it is very stable and sustainable. Functional gene detection indicated that the biofilms possessed a unique diversity of As(III) oxidase genes. Taken together, this acidophilic bioreactor has great potential for industrial applications in the cleaning up of As(III) from AMD solution |
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| Beschreibung: | Date Completed 25.08.2021 Date Revised 25.08.2021 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1573-3017 |
| DOI: | 10.1007/s10646-020-02283-4 |