Glass microspheres-enhanced bioleaching of low grade lepidolite using Aspergillus niger

被引：0

作者：

Zhang, Xinyi ^{[1
]}

Ding, Congcong ^{[1
]}

Zhou, Yucheng ^{[1
]}

Wang, Xiaopeng ^{[1
]}

Duan, Huaiyu ^{[1
]}

Xu, Chao ^{[1
]}

Zhao, Xingqing ^{[1
]}

Lu, Xiancai ^{[2
]}

机构：

[1] School of Environmental Science & Engineering, Changzhou University, Changzhou

[2] State Key Laboratory for Mineral Deposit Research, School of Earth Science and Engineering, Nanjing University, Nanjing

来源：

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2024年 / 55卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Aspergillus niger; enhanced bioleaching; glass microspheres; low grade lepidolite;

D O I：

10.11817/j.issn.1672-7207.2024.11.029

中图分类号：

学科分类号：

摘要：

Using Aspergillus niger as the leaching strain, different diameters and concentrations of glass microspheres were added to leach low-grade lithium mica, and the mechanism by which glass microspheres enhancing fungal leaching was studied. The highest leaching rate T1-40 was compared with the lowest leaching rate T5-60. The results show that small glass microspheres can increase the biomass of Aspergillus niger, promote organic acid secretion, and cause mechanical damage to the ore, thereby enhancing lithium leaching. The lithium leaching rate of the bacterial control group after 30 d is 2.53%, while the lithium leaching rate after adding glass microspheres reaches 3.19%, which increases the leaching rate by 26%. The mass fraction of oxalic acid, citric acid, and gluconic acid in T1-40 increases by 62%, 11%, and 25%, respectively, while the citric acid content in T5-60 decreases by 34%. The glass microspheres physically impact the surface of the ore, resulting in mechanical damage. Glass microspheres enhance the damage of Aspergillus niger to mineral structures. Metal ion bonds break under the action of organic acids. This study helps to understand the interaction between macroscopic particles and Aspergillus niger, as well as the influence of glass microspheres on the leaching of low-grade lithium ore. © 2024 Central South University. All rights reserved.

引用

页码：4342 / 4354

页数：12

共 46 条

[1]

LI Yan, WANG Min, ZHAO Youjing, Et al., Technology and development of lithium extraction from salt lake brine, Journal of Salt Lake Research, 31, 2, (2023)

[2]

ZHAO Ziyi, ZHOU Xue, WANG Tiefu, Et al., Feasibility, technical status, and prospects of lithium resource recovery from oil and gas field produced water, Journal of Environmental Engineering Technology, 13, 4, pp. 1434-1443, (2023)

[3]

ZHANG Jianyong, Summary of lithium extraction process at home and abroad[J], Shandong Chemical Industry, 52, 19, pp. 120-122, (2023)

[4]

QIN Chuanming, HUANG Shaowen, WANG Zhiqiang, Et al., Research progress on lithium extraction from lithium mica concentrate and comprehensive utilization of tailings, World Nonferrous Metals, 14, pp. 151-156, (2023)

[5]

LIU Wei, LIU Zilong, LIU Chang, Optimization of bioleaching low-grade copper-molybdenum ore by response surface methodology, Journal of Central South University (Science and Technology), 52, 9, (2021)

[6]

SUN Xiaowen, WU Hefang, ZHAO Genhai, Et al., Morphological regulation of Aspergillus niger to improve citric acid production by chsC gene silencing[J], Bioprocess and Biosystems Engineering, 41, 7, (2018)

[7]

VEITER L, RAJAMANICKAM V, HERWIG C., The filamentous fungal pellet: relationship between morphology and productivity[J], Applied Microbiology and Biotechnology, 102, 7, (2018)

[8]

SCHRADER M, POMMEREHNE K, WOLF S, Et al., Design of a CFD-DEM-based method for mechanical stress calculation and its application to glass bead-enhanced cultivations of filamentous Lentzea aerocolonigenes[J], Biochemical Engineering Journal, 148, (2019)

[9]

LI Guangyue, SUN Jing, LI Fangyan, Et al., Macroparticleenhanced bioleaching of uranium using Aspergillus niger, Minerals Engineering, 180, (2022)

[10]

LI Fangyan, SUN Jing, ZU Yuanyuan, Et al., Study on macroparticle-enhanced fungal leaching, Journal of University of South China(Science and Technology), 34, 6, pp. 12-17, (2020)

← 1 2 3 4 5 →