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Zhang Y, Wang L, Liu X, Cao C, Yao J, Ma Z, Shen Q, Chen Q, Liu J, Li R, Jiang J. Enhancing La(III) biosorption and biomineralization with Micromonospora saelicesensis: Involvement of phosphorus and formation of monazite nano-minerals. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:169851. [PMID: 38185165 DOI: 10.1016/j.scitotenv.2023.169851] [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: 10/16/2023] [Revised: 12/15/2023] [Accepted: 12/30/2023] [Indexed: 01/09/2024]
Abstract
The release of rare earth elements (REEs) from mining wastes and their applications has significant environmental implications, necessitating the development of effective prevention and reclamation strategies. The mobility of REEs in groundwater due to microorganisms has garnered considerable attention. In this study, a La(III) resistant actinobacterium, Micromonospora saelicesensis KLBMP 9669, was isolated from REE enrichment soil in GuiZhou, China, and evaluated for its ability to adsorb and biomineralize La(III). The findings demonstrated that M. saelicesensis KLBMP 9669 immobilized La(III) through the physical and chemical interactions, with immobilization being influenced by the initial La(III) concentration, biomass, and pH. The adsorption kinetics followed a pseudo-second-order rate model, and the adsorption isotherm conformed to the Langmuir model. La(III) adsorption capacity of this strain was 90 mg/g, and removal rate was 94 %. Scanning electron microscope (SEM) coupled with energy dispersive X-ray spectrometer (EDS) analysis revealed the coexistence of La(III) with C, N, O, and P. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) investigations further indicated that carboxyl, amino, carbonyl, and phosphate groups on the mycelial surface may participate in lanthanum adsorption. Transmission electron microscopy (TEM) revealed that La(III) accumulation throughout the M. saelicesensis KLBMP 9669, with some granular deposits on the mycelial surface. Selected area electron diffraction (SAED) confirmed the presence of LaPO4 crystals on the M. saelicesensis KLBMP 9669 biomass after a prolonged period of La(III) accumulation. This post-sorption nano-crystallization on the M. saelicesensis KLBMP 9669 mycelial surface is expected to play a crucial role in limiting the bioimmobilization of REEs in geological repositories.
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Affiliation(s)
- Ya Zhang
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
| | - Lili Wang
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China; The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
| | - Xiuming Liu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, Guizhou 550002, PR China
| | - Chengliang Cao
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China; The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China.
| | - Jiaqi Yao
- The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
| | - Zhouai Ma
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China; The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
| | - Qi Shen
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China; The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
| | - Qiuyu Chen
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China; The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
| | - Jinjuan Liu
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China.
| | - Rongpeng Li
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China; The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
| | - Jihong Jiang
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China; The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
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