Effect of activated carbon on chalcopyrite bioleaching with extreme thermophile Acidianus manzaertsis
Effect of activated carbon on chalcopyrite bioleaching with extreme thermophile Acidianus manzaertsis
复制标题
活性炭对极端嗜热酸曼扎尔氏菌生物浸出黄铜矿的影响
DOI：
10.1016/j.hydromet.2010.07.012
复制
发表时间：
2010-12-01
期刊：
影响因子：
4.7
通讯作者：
Qiu, Guan-Zhou
中科院分区：
文献类型：
--
作者：
Liang, Chang-Li;Xia, Jin-Lan;Qiu, Guan-Zhou
The effect of activated carbon on chalcopyrite bioleaching by extreme thermophile Acidianus manzaensis YN25 at 65 degrees C was evaluated, together with the investigation of the sulfur speciation transformation on the mineral by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and sulfur K-edge X-ray absorption near edge structure (XANES) spectroscopy. Bioleaching experiments show activated carbon significantly accelerated the dissolution of copper from chalcopyrite concentrate. The optimum concentration of activated carbon enhancing copper dissolution is 2 g/L. under which the copper yields increased from 64% to 95%. The catalysis could mainly be attributed to the galvanic interaction between activated carbon and chalcopyrite. Jarosite, elemental sulfur and chalcocite were detected in the solid phase, and the formation of potassium jarosite was prior to ammonio-jarosite. Activated carbon did not change the species of sulfur-containing compounds, but accelerated the formation of them. (C) 2010 Elsevier B.V. All rights reserved.
