摘要
A dual cell system was used to study the output power, output voltage, galvanic polarization of anode and cathode, and the relationship between the electric quantity(Q) and some factors, such as the dissolved Fe2+ magnitude, the time in the electro- generative simultaneous leaching with bacteria(BEGSL) and without bacteria(EGSL). A three-electrode system was adopted to study their individual self-corrosion current, which was smaller compared with the galvanic current. The results show that the output power and voltage in BEGSL are higher than those in EGSL. The accumulated sulfur on the surface of sulfides produced in BEGSL can be oxidized by A. ferrooxidans, and the ratio of biologic electric quantity reaches 51.50% in 72 h. The first stage both in EGSL and in BEGSL is the dissolution of pyrite on the surface to ferrous ion and sulfur element, which was oxidized by A. ferrooxidans in the further procedure.
A dual cell system was used to study the output power, output voltage, galvanic polarization of anode and cathode, and the relationship between the electric quantity（Q） and some factors, such as the dissolved Fe2＋ magnitude, the time in the electro- generative simultaneous leaching with bacteria（BEGSL） and without bacteria（EGSL）. A three-electrode system was adopted to study their individual self-corrosion current, which was smaller compared with the galvanic current. The results show that the output power and voltage in BEGSL are higher than those in EGSL. The accumulated sulfur on the surface of sulfides produced in BEGSL can be oxidized by A. ferrooxidans, and the ratio of biologic electric quantity reaches 51.50% in 72 h. The first stage both in EGSL and in BEGSL is the dissolution of pyrite on the surface to ferrous ion and sulfur element, which was oxidized by A. ferrooxidans in the further procedure.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2007年第6期1373-1378,共6页
Transactions of Nonferrous Metals Society of China
基金
Project(2004CB619204) supported by the Major State Basic Research Development Program
Project(50374077) supported by the National Natural Science Foundation of China
Project(07D069) supported by the Education Department Foundation of Hunan Province, China
关键词
黄铁矿
二氧化锰
生物氧化
偏振
pyrite
MnO2
bio-oxidation
simultaneous leaching
electro-generation
