Optimization of Environmental Conditions for Microbial Stabilization of Uranium Tailings, and the Microbial Community Response
Uranium pollution in tailings and its decay products is a global environmental problem. It is of great significance to use economical and efficient technologies to remediate uranium-contaminated soil. In this study, the effects of pH, temperature, and inoculation volume on stabilization efficiency a...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-12-01
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| Series: | Frontiers in Microbiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmicb.2021.770206/full |
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| author | Ying Lv Ying Lv Ying Lv Ying Lv Chuiyun Tang Chuiyun Tang Chuiyun Tang Xingyu Liu Xingyu Liu Xingyu Liu Mingjiang Zhang Mingjiang Zhang Mingjiang Zhang Bowei Chen Bowei Chen Bowei Chen Xuewu Hu Xuewu Hu Xuewu Hu Xuewu Hu Susu Chen Susu Chen Susu Chen Xuezhe Zhu Xuezhe Zhu Xuezhe Zhu |
| author_facet | Ying Lv Ying Lv Ying Lv Ying Lv Chuiyun Tang Chuiyun Tang Chuiyun Tang Xingyu Liu Xingyu Liu Xingyu Liu Mingjiang Zhang Mingjiang Zhang Mingjiang Zhang Bowei Chen Bowei Chen Bowei Chen Xuewu Hu Xuewu Hu Xuewu Hu Xuewu Hu Susu Chen Susu Chen Susu Chen Xuezhe Zhu Xuezhe Zhu Xuezhe Zhu |
| author_sort | Ying Lv |
| collection | DOAJ |
| description | Uranium pollution in tailings and its decay products is a global environmental problem. It is of great significance to use economical and efficient technologies to remediate uranium-contaminated soil. In this study, the effects of pH, temperature, and inoculation volume on stabilization efficiency and microbial community response of uranium tailings were investigated by a single-factor batch experiment in the remediation process by mixed sulfate-reducing bacteria (SRB) and phosphate-solubilizing bacteria (PSB, Pantoea sp. grinm-12). The results showed that the optimal parameters of microbial stabilization by mixed SRB-PSB were pH of 5.0, temperature of 25°C, and inoculation volume of 10%. Under the optimal conditions, the uranium in uranium tailings presented a tendency to transform from the acid-soluble state to residual state. In addition, the introduction of exogenous SRB-PSB can significantly increase the richness and diversity of endogenous microorganisms, effectively maintain the reductive environment for the microbial stabilization system, and promote the growth of functional microorganisms, such as sulfate-reducing bacteria (Desulfosporosinus and Desulfovibrio) and iron-reducing bacteria (Geobacter and Sedimentibacter). Finally, PCoA and CCA analyses showed that temperature and inoculation volume had significant effects on microbial community structure, and the influence order of the three environmental factors is as follows: inoculation volume > temperature > pH. The outcomes of this study provide theoretical support for the control of uranium in uranium-contaminated sites. |
| first_indexed | 2024-12-17T15:13:17Z |
| format | Article |
| id | doaj.art-e0b120a0862f43c49d532a031d8645ef |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-12-17T15:13:17Z |
| publishDate | 2021-12-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Microbiology |
| spelling | doaj.art-e0b120a0862f43c49d532a031d8645ef2022-12-21T21:43:37ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2021-12-011210.3389/fmicb.2021.770206770206Optimization of Environmental Conditions for Microbial Stabilization of Uranium Tailings, and the Microbial Community ResponseYing Lv0Ying Lv1Ying Lv2Ying Lv3Chuiyun Tang4Chuiyun Tang5Chuiyun Tang6Xingyu Liu7Xingyu Liu8Xingyu Liu9Mingjiang Zhang10Mingjiang Zhang11Mingjiang Zhang12Bowei Chen13Bowei Chen14Bowei Chen15Xuewu Hu16Xuewu Hu17Xuewu Hu18Xuewu Hu19Susu Chen20Susu Chen21Susu Chen22Xuezhe Zhu23Xuezhe Zhu24Xuezhe Zhu25National Engineering Research Center for Environment-Friendly Metallurgy in Producing Premium Non-ferrous Metals, GRINM Group Co., Ltd., Beijing, ChinaSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, ChinaGRINM Resources and Environment Technology Co., Ltd., Beijing, ChinaGeneral Research Institute for Non-ferrous Metals, Beijing, ChinaNational Engineering Research Center for Environment-Friendly Metallurgy in Producing Premium Non-ferrous Metals, GRINM Group Co., Ltd., Beijing, ChinaGRINM Resources and Environment Technology Co., Ltd., Beijing, ChinaGeneral Research Institute for Non-ferrous Metals, Beijing, ChinaNational Engineering Research Center for Environment-Friendly Metallurgy in Producing Premium Non-ferrous Metals, GRINM Group Co., Ltd., Beijing, ChinaGRINM Resources and Environment Technology Co., Ltd., Beijing, ChinaGRIMAT Engineering Institute Co., Ltd., Beijing, ChinaNational Engineering Research Center for Environment-Friendly Metallurgy in Producing Premium Non-ferrous Metals, GRINM Group Co., Ltd., Beijing, ChinaGRINM Resources and Environment Technology Co., Ltd., Beijing, ChinaGRIMAT Engineering Institute Co., Ltd., Beijing, ChinaNational Engineering Research Center for Environment-Friendly Metallurgy in Producing Premium Non-ferrous Metals, GRINM Group Co., Ltd., Beijing, ChinaGRINM Resources and Environment Technology Co., Ltd., Beijing, ChinaGRIMAT Engineering Institute Co., Ltd., Beijing, ChinaNational Engineering Research Center for Environment-Friendly Metallurgy in Producing Premium Non-ferrous Metals, GRINM Group Co., Ltd., Beijing, ChinaSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, ChinaGRINM Resources and Environment Technology Co., Ltd., Beijing, ChinaGeneral Research Institute for Non-ferrous Metals, Beijing, ChinaNational Engineering Research Center for Environment-Friendly Metallurgy in Producing Premium Non-ferrous Metals, GRINM Group Co., Ltd., Beijing, ChinaGRINM Resources and Environment Technology Co., Ltd., Beijing, ChinaGeneral Research Institute for Non-ferrous Metals, Beijing, ChinaNational Engineering Research Center for Environment-Friendly Metallurgy in Producing Premium Non-ferrous Metals, GRINM Group Co., Ltd., Beijing, ChinaGRINM Resources and Environment Technology Co., Ltd., Beijing, ChinaGeneral Research Institute for Non-ferrous Metals, Beijing, ChinaUranium pollution in tailings and its decay products is a global environmental problem. It is of great significance to use economical and efficient technologies to remediate uranium-contaminated soil. In this study, the effects of pH, temperature, and inoculation volume on stabilization efficiency and microbial community response of uranium tailings were investigated by a single-factor batch experiment in the remediation process by mixed sulfate-reducing bacteria (SRB) and phosphate-solubilizing bacteria (PSB, Pantoea sp. grinm-12). The results showed that the optimal parameters of microbial stabilization by mixed SRB-PSB were pH of 5.0, temperature of 25°C, and inoculation volume of 10%. Under the optimal conditions, the uranium in uranium tailings presented a tendency to transform from the acid-soluble state to residual state. In addition, the introduction of exogenous SRB-PSB can significantly increase the richness and diversity of endogenous microorganisms, effectively maintain the reductive environment for the microbial stabilization system, and promote the growth of functional microorganisms, such as sulfate-reducing bacteria (Desulfosporosinus and Desulfovibrio) and iron-reducing bacteria (Geobacter and Sedimentibacter). Finally, PCoA and CCA analyses showed that temperature and inoculation volume had significant effects on microbial community structure, and the influence order of the three environmental factors is as follows: inoculation volume > temperature > pH. The outcomes of this study provide theoretical support for the control of uranium in uranium-contaminated sites.https://www.frontiersin.org/articles/10.3389/fmicb.2021.770206/fullenvironmental conditionssulfate-reducing bacteriaphosphate-solubilizing bacteriamicrobial community responsemicrobial stabilizationuranium tailings |
| spellingShingle | Ying Lv Ying Lv Ying Lv Ying Lv Chuiyun Tang Chuiyun Tang Chuiyun Tang Xingyu Liu Xingyu Liu Xingyu Liu Mingjiang Zhang Mingjiang Zhang Mingjiang Zhang Bowei Chen Bowei Chen Bowei Chen Xuewu Hu Xuewu Hu Xuewu Hu Xuewu Hu Susu Chen Susu Chen Susu Chen Xuezhe Zhu Xuezhe Zhu Xuezhe Zhu Optimization of Environmental Conditions for Microbial Stabilization of Uranium Tailings, and the Microbial Community Response Frontiers in Microbiology environmental conditions sulfate-reducing bacteria phosphate-solubilizing bacteria microbial community response microbial stabilization uranium tailings |
| title | Optimization of Environmental Conditions for Microbial Stabilization of Uranium Tailings, and the Microbial Community Response |
| title_full | Optimization of Environmental Conditions for Microbial Stabilization of Uranium Tailings, and the Microbial Community Response |
| title_fullStr | Optimization of Environmental Conditions for Microbial Stabilization of Uranium Tailings, and the Microbial Community Response |
| title_full_unstemmed | Optimization of Environmental Conditions for Microbial Stabilization of Uranium Tailings, and the Microbial Community Response |
| title_short | Optimization of Environmental Conditions for Microbial Stabilization of Uranium Tailings, and the Microbial Community Response |
| title_sort | optimization of environmental conditions for microbial stabilization of uranium tailings and the microbial community response |
| topic | environmental conditions sulfate-reducing bacteria phosphate-solubilizing bacteria microbial community response microbial stabilization uranium tailings |
| url | https://www.frontiersin.org/articles/10.3389/fmicb.2021.770206/full |
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