Bioleaching and Electrochemical Behavior of Chalcopyrite by a Mixed Culture at Low Temperature.
Bioleaching and Electrochemical Behavior of Chalcopyrite by a Mixed Culture at Low Temperature.
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混合培养黄铜矿的低温生物浸出及电化学行为
DOI：
10.3389/fmicb.2021.663757
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发表时间：
2021
影响因子：
5.2
通讯作者：
Zeng W
中科院分区：
文献类型：
--
作者：
Peng T;Liao W;Wang J;Miao J;Peng Y;Gu G;Wu X;Qiu G;Zeng W
低温生物湿法冶金涉及高寒矿区的金属回收，但在<10°C的温度下利用微生物群落进行生物浸出几乎没有讨论。为此，采用混合培养法在6℃条件下进行黄铜矿生物浸出。混合培养的铜浸出率高于纯培养的酸性铁硫杆菌菌株YL15。高通量测序技术表明，酸性硫杆菌和亚硫酸盐杆菌是混合培养的主要菌株。循环伏安图、动电位极化和电化学阻抗谱显示，与纯培养相比，混合培养增强了黄铜矿电极的溶解反应，降低了腐蚀电位，增大了腐蚀电流，降低了黄铜矿电极的电荷转移电阻和钝化层阻抗。本研究揭示了混合培养促进黄铜矿生物浸出的机理。
Low-temperature biohydrometallurgy is implicated in metal recovery in alpine mining areas, but bioleaching using microbial consortia at temperatures <10°C was scarcely discussed. To this end, a mixed culture was used for chalcopyrite bioleaching at 6°C. The mixed culture resulted in a higher copper leaching rate than the pure culture of Acidithiobacillus ferrivorans strain YL15. High-throughput sequencing technology showed that Acidithiobacillus spp. and Sulfobacillus spp. were the mixed culture’s major lineages. Cyclic voltammograms, potentiodynamic polarization and electrochemical impedance spectroscopy unveiled that the mixed culture enhanced the dissolution reactions, decreased the corrosion potential and increased the corrosion current, and lowered the charge transfer resistance and passivation layer impedance of the chalcopyrite electrode compared with the pure culture. This study revealed the mechanisms via which the mixed culture promoted the chalcopyrite bioleaching.
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影响因子：
5.2
作者：
Hedrich, Sabrina;Guezennec, Anne-Gwenaelle;Joulian, Catherine
通讯作者：
Joulian, Catherine
潜在堆建方法对混合培养含高细粉铜浮选尾矿柱生物浸出的影响
影响因子：
4.8
作者：
Hao, Xiaodong;Liang, Yili;Liu, Xueduan
通讯作者：
Liu, Xueduan
影响因子：
3.8
作者：
Kupka, Daniel;Rzhepishevska, Olena I.;Tuovinen, H.
通讯作者：
Tuovinen, H.
影响因子：
2.9
作者：
Hallberg, Kevin B.;Gonzalez-Toril, Elena;Johnson, D. Barrie
通讯作者：
Johnson, D. Barrie
DOI：
10.1007/s10295-019-02193-3
发表时间：
2019-08-01
影响因子：
3.4
作者：
Ai, Chenbing;Yan, Zhang;Zeng, Weimin
通讯作者：
Zeng, Weimin