湿法冶金2026，Vol.45Issue(3)：331-340,10.DOI:10.13355/j.cnki.sfyj.2026.03.008
嗜酸性铁/硫杆菌浸出砂岩型铀矿协同作用研究
Synergistic Effect of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans in Bioleaching of Sandstone-type Uranium Ore
摘要
Abstract
In-situ uranium leaching was investigated using native acidophilic ferrous sulfate oxidizing bacillus(Acidithiobacillus ferrooxidans,L24f)and acidophilic sulfur oxidizing bacillus(Acidithiobacillus thiooxidans,L24s)from sandstone-type uranium ore.In combination with physicochemical parameter monitoring and characterization techniques such as SEM-EDS and XRD,the synergistic leaching mechanism was elucidated to determine the effectiveness of synergistic leaching and the optimal inoculation ratio.The results show that L24f and L24s strains have a significant synergistic uranium leaching effect,and the inoculation volume ratio of 1∶1 is the optimal ratio.Under this condition,the final uranium leaching rate of sandstone-type uranium ore is 86.5％,which is 7.5 percentage points higher than that of a single L24f pure bacteria system.The mixed bacterial consortium system can maintain the low pH environment of the system through complementary metabolic functions,effectively inhibit the formation of jarosite passivation layer,and significantly improve the leaching rate of uranium.关键词
铀/砂岩型铀矿/协同浸出/生物浸出/混合菌/嗜酸氧化亚铁硫杆菌/嗜酸氧化硫硫杆菌Key words
uranium/sandstone-type uranium ore/synergistic leaching/bioleaching/mixed bacteria/Acidithiobacillus ferrooxidans/Acidithiobacillus thiooxidans分类
能源科技引用本文复制引用
刘晨阳,刘亚洁,王学刚,周仲魁,王健..嗜酸性铁/硫杆菌浸出砂岩型铀矿协同作用研究[J].湿法冶金,2026,45(3):331-340,10.基金项目
铀资源探采与核遥感全国重点实验室(东华理工大学)自主部署项目(2024QZ-TD-22) （东华理工大学）
江西省重点研发计划项目(20232BBG70007) （20232BBG70007）
中国铀业有限公司—东华理工大学核资源与环境国家重点实验室联合创新基金项目(2023NRE-LH-19) （2023NRE-LH-19）
国防基础科研项目(JCKY2019401D003). （JCKY2019401D003）
