Adsorption and leaching of chalcopyrite by Sulfolobus metallicus YN24 cultured in the distinct energy sources
来源期刊：International Journal of Minerals Metallurgy and Materials2015年第6期
论文作者：Yu-ting Liang Shan Zhu Jun Wang Chen-bing Ai Wen-qing Qin
文章页码：549 - 552
摘 要：The chalcopyrite-adsorption characteristics and leaching properties of Sulfolobus metallicus（S. metallicus） YN24 were investigated in this study. The effects of zeta potentials of S. metallicus samples on chalcopyrite cultivated with distinct sources of energy were similar. Regardless of the energy source cultivated, all of the investigated S. metallicus samples adhered rapidly to the chalcopyrite surface, with an adhesion plateau being reached within 60 min. However, the mineral-cultured S. metallicus adsorbed more strongly onto chalcopyrite than the sulfur-cultured S. metallicus did. Furthermore, chalcopyrite-leaching tests suggested that the copper-leaching ability of the mineral-cultured S. metallicus was also greater than that of unadapted S. metallicus. Therefore, the results provide insights into the mechanism of mineral-surface adsorption of microorganisms that helps enhance the copper-leaching rate.
Yu-ting Liang，Shan Zhu，Jun Wang，Chen-bing Ai，Wen-qing Qin
School of Minerals Processing and Bioengineering,Central South University
摘 要：The chalcopyrite-adsorption characteristics and leaching properties of Sulfolobus metallicus（S. metallicus） YN24 were investigated in this study. The effects of zeta potentials of S. metallicus samples on chalcopyrite cultivated with distinct sources of energy were similar. Regardless of the energy source cultivated, all of the investigated S. metallicus samples adhered rapidly to the chalcopyrite surface, with an adhesion plateau being reached within 60 min. However, the mineral-cultured S. metallicus adsorbed more strongly onto chalcopyrite than the sulfur-cultured S. metallicus did. Furthermore, chalcopyrite-leaching tests suggested that the copper-leaching ability of the mineral-cultured S. metallicus was also greater than that of unadapted S. metallicus. Therefore, the results provide insights into the mechanism of mineral-surface adsorption of microorganisms that helps enhance the copper-leaching rate.
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