Electrogenerative leaching for sphalerite-MnO2 in the presence of Acidithiobacillus thiooxidans

王少芬; 肖利; 方正; 邱冠周; 王春雄

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Electrogenerative leaching for sphalerite-MnO2 in the presence of Acidithiobacillus thiooxidans

机译：酸性硫代氧化硫杆菌存在下闪锌矿-MnO2的发电浸出

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A dual cell system was used to study the electrogenerative leaching sphalerite-MnO2 in the presence and absence of Acidithiobacillus thiooxidans (A. thiooxidans). The polarization of anode and cathode, and the relationship between the electric quantity (Q) and some factors, such as the dissolved rate of Zn2+ and Fe2+, and the time in the bio-electro-generating simultaneous leaching (BEGL) and electro-generating simultaneous leaching (EGL) were studied. A three-electrode system was applied to studying anodic and cathodic self-corrosion current, which was inappreciable compared with the galvanic current between sphalerite and MnO2. The results show that the dissolved Zn2+ in the presence of A. thiooxidans is nearly 43% higher than that in the absence of A. thiooxidans; the electrogenerative quantity in the former is about 150% more than that in the latter. The accumulated sulfur on the surface of sulfides produced in the electrogenerative leaching process can be oxidized in the presence of A. thiooxidans, and the ratio of biologic electric quantity reaches 27.9% in 72 h.

机译：在存在和不存在嗜酸硫硫杆菌（A. thiooxidans）的情况下，采用双电池系统研究了电浸闪锌矿-MnO2。阳极和阴极的极化以及电量（Q）与Zn2 +和Fe2 +的溶解速度以及生物电同时浸出（BEGL）和电产生的时间等因素之间的关系同时浸出（EGL）进行了研究。三电极系统被用于研究阳极和阴极的自腐蚀电流，这与闪锌矿和MnO2之间的电流相比是微不足道的。结果表明，在不存在A. thiooxidans的情况下，溶解的Zn2 +比不存在A. thiooxidans的溶解的Zn2 +高近43％。前者的发电量比后者多约150％。在电浸出过程中产生的硫化物表面上积聚的硫可以在硫代农杆菌存在下被氧化，在72小时内生物量的比率达到27.9％。

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《中国有色金属学报：英文版》 |2010年第S1期|P.21-25|共5页
作者
王少芬; 肖利; 方正; 邱冠周; 王春雄;
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College of Chemistry and Biological Engineering, Changsha University of Science and Technology;

School of Resources Processing and Bioengineering, Central South University;

Metallurgic Engineering College, Hunan In dustrial University;

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Electrogenerative leaching for sphalerite-MnO2 in the presence of Acidithiobacillus thiooxidans

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