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从聚金属硫化物尾矿中通过用改进的9K亚格分离的生物溶解功能细菌回收金属:一步和两步工艺之间的比较

Muqiu Hu¹, Xin Zhao¹, Jinghan Gu¹

¹Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China.

Environmental research

|October 27, 2023

概括

优化的9K亚格改善了生物金关键细菌的隔离. 混合细菌注射剂从多金属尾矿中提升了金属回收,过程选择取决于矿石成分和目标金属.

科学领域:

环境科学环境科学
生物技术是生物技术.
金工业是金工业的一个方面.

背景情况:

生物金提供了一种环保且具有成本效益的方法,用于从低档矿石和尾矿中回收金属.
有效的隔离和功能性细菌的应用对于优化生物溶解过程至关重要.

研究的目的:

为了优化9K亚格媒介,以提高生物溶解细菌的隔离.
评估在聚金属硫化物尾矿上选择的细菌菌株和混合培养的生物溶解效率.
为了比较一阶段和两阶段生物溶解过程的有效性.

主要方法:

优化9K亚格媒介组成,以改善细菌固化和生长.
从酸性矿井排水中分离和识别酸性细菌 (Acidithiobacillus ferriphilus,A.铁氧化物,Leptospirillum铁氧化物).
使用单个菌株和混合培养在多金属硫化物尾矿上的一步和两步过程中的生物化实验.

主要成果:

优化的9K亚格促进了六种功能性细菌菌株的分离.
酸性菌杆菌 ferriphilus WT1-1 实现了高的水效率为Cu (58.37%),Al (53.14%),Mg (80.09%) 和Zn (76.95%) 个别.
与纯种植相比,混合细菌注射剂显著改善了Cu和Mg的回收,其中的一步和两步过程显示了各种金属的差异性效率.

结论:

优化的9K agar有效地分离了关键的生物溶解微生物.
混合微生物联盟增强了聚金属硫化物尾矿中的特定金属的生物化.
在单阶段和双阶段生物清洗之间做出选择应根据具体的尾矿成分和目标金属回收目标进行量身定制.

关键词:

9K亚格尔 9K亚格尔是什么意思生物接触可以达到生物接触.提高效率提高效率提高效率金属回收的使用方法聚金属硫化物残留物聚金属硫化物残留物

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