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Identification of aRhodotorula taiwanensis strain capable of removing Mn(Ⅱ)
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Xiao HE1, 2, 3, Zhengbo YUE1, Jiashun YIN1, Shaoping WANG2, Wensheng LIU3, Xian'ang ZHANG4, Xin CHUAI2, Jin WANG1, *
Acta Microbiologica Sinica | 2024, 64(6) : 2104 - 2114
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Acta Microbiologica Sinica | 2024, 64(6): 2104-2114
• Geomicrobiological Applications •
Identification of aRhodotorula taiwanensis strain capable of removing Mn(Ⅱ)
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Xiao HE1, 2, 3, Zhengbo YUE1, Jiashun YIN1, Shaoping WANG2, Wensheng LIU3, Xian'ang ZHANG4, Xin CHUAI2, Jin WANG1, *
Affiliations
  • 1 School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, Anhui, China
  • 2 Anhui Masteel Mining Resources Group, Nanshan Mining Co., Ltd., Ma'anshan 243000, Anhui, China
  • 3 Anhui Masteel Mining Resources Group Co., Ltd., Ma'anshan 243000, Anhui, China
  • 4 Ecological Restoration Technology Branch of Anhui Masteel Mining Resources Group Co., Ltd., Ma'anshan 243000, Anhui, China
Published: 2024-06-04 doi: 10.13343/j.cnki.wsxb.20230616
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[Objective] To investigate the removal efficiency and mechanism by a strain ofRhodotorula. [Methods] The strain was identified based on the morphological characteristics and the phylogenetic tree based on 26S rRNA gene sequences. Then, the removal effect of the strain on Mn(Ⅱ) was studied at different initial pH and Mn(Ⅱ) concentrations. Finally, the products were characterized by scanning electron microscopy, X-ray diffraction analysis, and X-ray photoelectron spectroscopy. [Results] The isolate was identified asRhodotorula taiwanensis, which could grow well at pH 2.0 and 2 000 mg/L Mn(Ⅱ). The removal rate of Mn(Ⅱ) by the strain reached 98.52% at the initial pH 6.0 and Mn(Ⅱ) concentration of 300 mg/L after 144 h, while higher concentrations (≥500 mg/L) of Mn(Ⅱ) caused toxicity to the cells and weakened the removal effect. The strain could oxidize Mn(Ⅱ) to manganese oxides (mainly amorphous MnO2, Mn2O3, and MnO), which produced layered minerals accumulated on the cell surface. In addition, the process of removing Mn(Ⅱ) by the strain increased the pH of the medium (initial pH 7.0, Mn(Ⅱ) concentration of 100 mg/L) up to 8.4 after 144 h. [Conclusion] R.taiwanensis MF4 isolated in this study can tolerate low pH and high concentrations of Mn(Ⅱ), remove Mn(Ⅱ), and increase medium pH. The findings have a reference value for the end process design in the remediation and treatment of acid mine drainage.

manganese ion  /  Rhodotorula taiwanensis  /  manganese removal mechanism  /  alkali production  /  acid mine drainage
Xiao HE, Zhengbo YUE, Jiashun YIN, Shaoping WANG, Wensheng LIU, Xian'ang ZHANG, Xin CHUAI, Jin WANG. Identification of aRhodotorula taiwanensis strain capable of removing Mn(Ⅱ)[J]. Acta Microbiologica Sinica, 2024 , 64 (6) : 2104 -2114 . DOI: 10.13343/j.cnki.wsxb.20230616
Funding
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  • National Natural Science Foundation of China(U20A20325)
  • Key Research and Development Plan of Anhui Province(2022107020015)
Appendix
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Year 2024 volume 64 Issue 6
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Article Info
doi: 10.13343/j.cnki.wsxb.20230616
  • Receive Date：2023-10-08
  • Online Date：2026-03-19
  • Published：2024-06-04
Article Data
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History
  • Received：2023-10-08
  • Accepted：2024-02-27
Funding
National Natural Science Foundation of China(U20A20325)
Key Research and Development Plan of Anhui Province(2022107020015)
Affiliations
    1 School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, Anhui, China
    2 Anhui Masteel Mining Resources Group, Nanshan Mining Co., Ltd., Ma'anshan 243000, Anhui, China
    3 Anhui Masteel Mining Resources Group Co., Ltd., Ma'anshan 243000, Anhui, China
    4 Ecological Restoration Technology Branch of Anhui Masteel Mining Resources Group Co., Ltd., Ma'anshan 243000, Anhui, China

Corresponding:

*WANG Jin, E-mail:
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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