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Kong L, Long X, Yu Z, Song P, Diao Z, Song G, Chen D. Stabilization of Uranium in Acid Ore Wastewater through Hydrothermal Mineralization-Induced Crystallization. Inorg Chem 2024; 63:10611-10618. [PMID: 38801713 DOI: 10.1021/acs.inorgchem.4c00990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Uranium [U(VI)] mining activity resulted in the discharge of uranium containing acid wastewater. It is necessary for immobilizing the uranium from wastewater to avoid its environmental pollution. In this work, a novel hydrothermal mineralization strategy is proposed for uranium stabilization. Three reaction systems such as Mg3(PO4)2 + UO22+, Mg2+ + PO43- + UO22+, and Mg2+ + PO43- + Mg3(PO4)2 + UO22+ were designed to investigate the uranium mineralization and stabilization performance. The consumed molar quantities of magnesium and phosphate were calculated to understand the mineralization mechanisms. The molar ratios of Mg/U and P/U in the experimental results were in agreement with those of thermodynamic calculation in the presence of dissolved Mg2+ and PO43- under the hydrothermal process. The calculated saturated index indicated the facile crystallization of uranium into the saleeite and chernikovite through hydrothermal mineralization at the pH value of 5 and 473 K. Crystallization into saleeite and chernikovite contributed to uranium stabilization, resulting in the negligible leaching rate of 5% due to the high crystallinity of 97.23%. Thus, hydrothermal mineralization of uranium crystallization into saleeite and chernikovite was promising for uranium stabilization with long-term stability.
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Affiliation(s)
- Lingjun Kong
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
- School of Chemistry and Chemical Engineering, Qinghai Minzu University, Xining 810007, China
| | - Xingyu Long
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Zijing Yu
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Ping Song
- School of Chemistry and Chemical Engineering, Qinghai Minzu University, Xining 810007, China
| | - Zenghui Diao
- School of Environmental Science and Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Gang Song
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Diyun Chen
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
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Xu G, Li X, Liu X, Han J, Shao K, Yang H, Fan F, Zhang X, Dou J. Bibliometric insights into the evolution of uranium contamination reduction research topics: Focus on microbial reduction of uranium. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 917:170397. [PMID: 38307284 DOI: 10.1016/j.scitotenv.2024.170397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 01/09/2024] [Accepted: 01/21/2024] [Indexed: 02/04/2024]
Abstract
Confronting the threat of environment uranium pollution, decades of research have yielded advanced and significant findings in uranium bioremediation, resulting in the accumulation of tremendous amount of high-quality literature. In this study, we analyzed over 10,000 uranium reduction-related papers published from 1990 to the present in the Web of Science based on bibliometrics, and revealed some critical information on knowledge structure, thematic evolution and additional attention. Methods including contribution comparison, co-occurrence and temporal evolution analysis are applied. The results of the distribution and impact analysis of authors, sources, and journals indicated that the United States is a leader in this field of research and China is on the rise. The top keywords remained stable, primarily focused on chemicals (uranium, iron, plutonium, nitrat, carbon), characters (divers, surfac, speciat), and microbiology (microbial commun, cytochrome, extracellular polymeric subst). Keywords related to new strains, reduction mechanisms and product characteristics demonstrated the strongest uptrend, while some keywords related to mechanism and performance were clearly emerging in the past 5 years. Furthermore, the evolution of the thematic progression can be categorized into three stages, commencing with the discovery of the enzymatic reduction of hexavalent uranium to tetravalent uranium, developing in the groundwater remediation process at uranium-contaminated sites, and delving into the research on microbial reduction mechanisms of uranium. For future research, enhancing the understanding of mechanisms, improving uranium removal performance, and exploring practical applications can be considered. This study provides unique insights into microbial uranium reduction research, providing valuable references for related studies in this field.
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Affiliation(s)
- Guangming Xu
- Engineering Research Center of Ministry of Education on Groundwater Pollution Control and Remediation, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Xindai Li
- Engineering Research Center of Ministry of Education on Groundwater Pollution Control and Remediation, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Xinyao Liu
- Engineering Research Center of Ministry of Education on Groundwater Pollution Control and Remediation, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Juncheng Han
- Engineering Research Center of Ministry of Education on Groundwater Pollution Control and Remediation, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Kexin Shao
- Engineering Research Center of Ministry of Education on Groundwater Pollution Control and Remediation, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Haotian Yang
- Engineering Research Center of Ministry of Education on Groundwater Pollution Control and Remediation, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Fuqiang Fan
- Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai 519087, PR China.
| | - Xiaodong Zhang
- Analytical and Testing Center of BNU, Beijing Normal University, Beijing 100875, PR China
| | - Junfeng Dou
- Engineering Research Center of Ministry of Education on Groundwater Pollution Control and Remediation, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China.
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