Yeast Extract Affecting the Transformation of Biogenic Tooeleite and Its Stability
Highly toxic As(III) is the main form of As in wastewater. The retention of As by tooeleite has gradually attracted attention in recent years due to its great potential for the direct removal of As(III). The existence of natural As-bearing minerals is closely related to microorganisms and organic ma...
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MDPI AG
2022-03-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/7/3290 |
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| author | Qingzhu Li Qianwen Liu Xi Wang Qi Liao Hui Liu Qingwei Wang |
| author_facet | Qingzhu Li Qianwen Liu Xi Wang Qi Liao Hui Liu Qingwei Wang |
| author_sort | Qingzhu Li |
| collection | DOAJ |
| description | Highly toxic As(III) is the main form of As in wastewater. The retention of As by tooeleite has gradually attracted attention in recent years due to its great potential for the direct removal of As(III). The existence of natural As-bearing minerals is closely related to microorganisms and organic matters. In this study, yeast extract was found to enhance the stability of biogenic tooeleite by <i>Acidithiobacillus ferrooxidans</i> (<i>A. ferrooxidans</i>). The effects of pH, Fe/As and yeast extract concentration were systematically studied, and the toxicity characteristic leaching procedure (TCLP) was conducted to evaluate the short-term stability of tooeleite. The mineral synthesized in the presence of yeast extract showed that the As leaching concentration decreased from 13.78 mg/L to 7.23 mg/L and the stability increased by more than 40%. In addition, various characteristics confirmed that the precursor was changed from amorphous schwertmannite to basic ferric sulfate in the presence of yeast extract, and then transformed to relatively purer tooeleite with less hollow structure and excellent dispersion, which is favorable for the stability of tooeleite. This result indicated that yeast extract resulted in the formation of different precursors and thus affected the transformation and stability of tooeleite. |
| first_indexed | 2024-03-09T12:09:35Z |
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| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T12:09:35Z |
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| spelling | doaj.art-613e39e5a77c4b64ba8a11361dcf8f9a2023-11-30T22:53:42ZengMDPI AGApplied Sciences2076-34172022-03-01127329010.3390/app12073290Yeast Extract Affecting the Transformation of Biogenic Tooeleite and Its StabilityQingzhu Li0Qianwen Liu1Xi Wang2Qi Liao3Hui Liu4Qingwei Wang5School of Metallurgy and Environment, Central South University, Changsha 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha 410083, ChinaSchool of Metallurgy and Environment, Central South University, Changsha 410083, ChinaHighly toxic As(III) is the main form of As in wastewater. The retention of As by tooeleite has gradually attracted attention in recent years due to its great potential for the direct removal of As(III). The existence of natural As-bearing minerals is closely related to microorganisms and organic matters. In this study, yeast extract was found to enhance the stability of biogenic tooeleite by <i>Acidithiobacillus ferrooxidans</i> (<i>A. ferrooxidans</i>). The effects of pH, Fe/As and yeast extract concentration were systematically studied, and the toxicity characteristic leaching procedure (TCLP) was conducted to evaluate the short-term stability of tooeleite. The mineral synthesized in the presence of yeast extract showed that the As leaching concentration decreased from 13.78 mg/L to 7.23 mg/L and the stability increased by more than 40%. In addition, various characteristics confirmed that the precursor was changed from amorphous schwertmannite to basic ferric sulfate in the presence of yeast extract, and then transformed to relatively purer tooeleite with less hollow structure and excellent dispersion, which is favorable for the stability of tooeleite. This result indicated that yeast extract resulted in the formation of different precursors and thus affected the transformation and stability of tooeleite.https://www.mdpi.com/2076-3417/12/7/3290tooeleitebiogenicstabilitytransformationyeast extract |
| spellingShingle | Qingzhu Li Qianwen Liu Xi Wang Qi Liao Hui Liu Qingwei Wang Yeast Extract Affecting the Transformation of Biogenic Tooeleite and Its Stability Applied Sciences tooeleite biogenic stability transformation yeast extract |
| title | Yeast Extract Affecting the Transformation of Biogenic Tooeleite and Its Stability |
| title_full | Yeast Extract Affecting the Transformation of Biogenic Tooeleite and Its Stability |
| title_fullStr | Yeast Extract Affecting the Transformation of Biogenic Tooeleite and Its Stability |
| title_full_unstemmed | Yeast Extract Affecting the Transformation of Biogenic Tooeleite and Its Stability |
| title_short | Yeast Extract Affecting the Transformation of Biogenic Tooeleite and Its Stability |
| title_sort | yeast extract affecting the transformation of biogenic tooeleite and its stability |
| topic | tooeleite biogenic stability transformation yeast extract |
| url | https://www.mdpi.com/2076-3417/12/7/3290 |
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