The Effects of Aniline-Promoted Electron Shuttle-Mediated Goethite Reduction by <i>Shewanella oneidensis</i> MR-1 and theDegradation of Aniline
The biological reduction of Fe (III) is common in underground environments. This process not only affects the biogeochemical cycle of iron but also influences the migration and transformation of pollutants. Humic substances are considered effective strategies for improving the migration and transfor...
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MDPI AG
2023-10-01
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| Online Access: | https://www.mdpi.com/2073-4441/15/20/3686 |
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| author | Mengmeng Tang Chaoyong Wang Zaitian Dong Qianjin Che Zetang Wang Yuxuan Zhu |
| author_facet | Mengmeng Tang Chaoyong Wang Zaitian Dong Qianjin Che Zetang Wang Yuxuan Zhu |
| author_sort | Mengmeng Tang |
| collection | DOAJ |
| description | The biological reduction of Fe (III) is common in underground environments. This process not only affects the biogeochemical cycle of iron but also influences the migration and transformation of pollutants. Humic substances are considered effective strategies for improving the migration and transformation of toxic substances and enhancing the bioavailability of Fe (III). In this study, the electron shuttle anthraquinone-2-sulfonate (AQS) significantly promoted the bio-reduction of Fe (III). On this basis, different concentrations of aniline were added. The research results indicate that at an aniline concentration of 3 μM, the production of Fe (II) in the reaction system was 2.51 times higher compared to the microbial reaction group alone. Furthermore, the degradation of aniline was most effective in this group. The increased consumption of sodium lactate suggests that aniline, under the mediation of AQS, promoted the metabolism of <i>Shewanella oneidensis</i> MR-1 cells and facilitated the involvement of more electrons in the reduction process. After the reaction, the solid mineral Fe (II)-O content increased to 41.32%. This study provides insights into the reduction mechanism of Fe (III) in the complex environment of microorganisms, iron minerals, electron shuttles, and pollutants. It aims to offer a theoretical basis for the biodegradation of aromatic hydrocarbon pollutants. |
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| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T20:48:34Z |
| publishDate | 2023-10-01 |
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| spelling | doaj.art-1e45402e0d0347fb8dd63d3f30c7b31a2023-11-19T18:31:24ZengMDPI AGWater2073-44412023-10-011520368610.3390/w15203686The Effects of Aniline-Promoted Electron Shuttle-Mediated Goethite Reduction by <i>Shewanella oneidensis</i> MR-1 and theDegradation of AnilineMengmeng Tang0Chaoyong Wang1Zaitian Dong2Qianjin Che3Zetang Wang4Yuxuan Zhu5School of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mines, Liaoning Technology University, Huludao 125105, ChinaSchool of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, ChinaThe biological reduction of Fe (III) is common in underground environments. This process not only affects the biogeochemical cycle of iron but also influences the migration and transformation of pollutants. Humic substances are considered effective strategies for improving the migration and transformation of toxic substances and enhancing the bioavailability of Fe (III). In this study, the electron shuttle anthraquinone-2-sulfonate (AQS) significantly promoted the bio-reduction of Fe (III). On this basis, different concentrations of aniline were added. The research results indicate that at an aniline concentration of 3 μM, the production of Fe (II) in the reaction system was 2.51 times higher compared to the microbial reaction group alone. Furthermore, the degradation of aniline was most effective in this group. The increased consumption of sodium lactate suggests that aniline, under the mediation of AQS, promoted the metabolism of <i>Shewanella oneidensis</i> MR-1 cells and facilitated the involvement of more electrons in the reduction process. After the reaction, the solid mineral Fe (II)-O content increased to 41.32%. This study provides insights into the reduction mechanism of Fe (III) in the complex environment of microorganisms, iron minerals, electron shuttles, and pollutants. It aims to offer a theoretical basis for the biodegradation of aromatic hydrocarbon pollutants.https://www.mdpi.com/2073-4441/15/20/3686<i>Shewanella oneidensis</i> MR-1goethiteFe (III) reductionelectron shuttleaniline |
| spellingShingle | Mengmeng Tang Chaoyong Wang Zaitian Dong Qianjin Che Zetang Wang Yuxuan Zhu The Effects of Aniline-Promoted Electron Shuttle-Mediated Goethite Reduction by <i>Shewanella oneidensis</i> MR-1 and theDegradation of Aniline Water <i>Shewanella oneidensis</i> MR-1 goethite Fe (III) reduction electron shuttle aniline |
| title | The Effects of Aniline-Promoted Electron Shuttle-Mediated Goethite Reduction by <i>Shewanella oneidensis</i> MR-1 and theDegradation of Aniline |
| title_full | The Effects of Aniline-Promoted Electron Shuttle-Mediated Goethite Reduction by <i>Shewanella oneidensis</i> MR-1 and theDegradation of Aniline |
| title_fullStr | The Effects of Aniline-Promoted Electron Shuttle-Mediated Goethite Reduction by <i>Shewanella oneidensis</i> MR-1 and theDegradation of Aniline |
| title_full_unstemmed | The Effects of Aniline-Promoted Electron Shuttle-Mediated Goethite Reduction by <i>Shewanella oneidensis</i> MR-1 and theDegradation of Aniline |
| title_short | The Effects of Aniline-Promoted Electron Shuttle-Mediated Goethite Reduction by <i>Shewanella oneidensis</i> MR-1 and theDegradation of Aniline |
| title_sort | effects of aniline promoted electron shuttle mediated goethite reduction by i shewanella oneidensis i mr 1 and thedegradation of aniline |
| topic | <i>Shewanella oneidensis</i> MR-1 goethite Fe (III) reduction electron shuttle aniline |
| url | https://www.mdpi.com/2073-4441/15/20/3686 |
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