Effect of L-cysteine on bioleaching of Ni-Cu sulphide by A. manzaensis
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The effect of L-cysteine in different concentrations on the bioleaching of Ni-Cu sulfide was studied with an extremely thermophilic archaea, Acidianus manzaensis. It is found that adding certain amounts of L-cysteine to the bioleaching system of Ni-Cu sulfide largely enhances the leaching rate. X-ray diffraction (XRD) patterns show the change of bioleached solid residues and the effect of L-cysteine on the surface charges of minerals. Zeta potential and IR spectra of mineral surface show that the interaction between L-cysteine and mineral leads to the formation of metal complex, which is propitious to the bioleaching of Ni-Cu sulfide by Acidianus manzaensis.
Key wordsAcidianus manzaensis L-cysteine Ni-Cu sulfide bioleaching surface charge Zeta potential
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- FU Jian-hua, QIU Guan-zhou, LIU Jian-she, HU Yue-hua, ZHANG Zai-hai. Study on bacterial leaching of oxide-sulphide copper ores [J]. Mining and Metallurgical Engineering, 2003, 23(4): 30–34.Google Scholar
- HU Yue-hua, HE Zhi-guo, HU Wei-xin, PENG Hong, ZHONG Hui. Effect of two kinds of amino-acids on bioleaching metal sulfide [J]. Transactions of Nonferrous Metals Society of China, 2004, 14(4): 794–797.Google Scholar
- LI Hong-mei, KE Jia-jun. The progress in bioleaching of nickel-bearing sulfide ores [J]. Multipurpose Utilization of Mineral Resources, 1999, 5(3): 28–33.Google Scholar
- LIU Jing-ping, LI Jin, GE Xing. Synthesis and free radical inhibition rate of copper(II), iron(II), manganese(II) complexes with cysteine [J]. Chemical World, 2004(5): 235–238. (in Chinese)Google Scholar
- LIU Zhong, YANG Wen-bo, BAI Gang, TIAN Wang, JIN Yon-jie. Microbial enzyme conversion of L-cysteine and L-cystine [J]. Microbiology, 2003, 30(6): 16–21. (In Chinese)Google Scholar
- MIN Xiao-bo, CHAI Li-yuan, CHEN Wei-liang, ZHANG Chuan-fu, HUANG Bai-yun, KUANG Zhong. Study on bioleaching of refractory gold ore (I)—Mechanism on bioleaching of pyrite by Thiobacillus ferroxidans [J]. Transactions of Nonferrous Metals Society of China, 2001, 11(5): 784–789.Google Scholar
- QIU Guan-zhou, LI Quan, QIN Wen-qing. Bacterial leaching complex sulfide minerals of lead, antimony, zinc and iron [J]. Mining and Metallurgical Engineering, 2005, 25(3): 30–33.Google Scholar
- QIU Guan-zhou, LIU Jian-she, HU Yue-hua. Electrochemical behavior of chalcopyrite in presence of Thiobacillus ferroxidans [J]. Transactions of Nonferrous Metals Society of China, 2000, 10(S1): 23–25.Google Scholar
- SANO Y, TAKEDA S. Cytotoxicity and dissolution of metallic biomaterials using dynamic extraction (in vitro) [J]. Shika Igaku, 1992, 55(2): 125–140.Google Scholar
- TRIBUTSCH H, ROJAS-CHAPANA J A. Metal sulfide semiconductor with the reduction of Fe3+ [J]. Current Microbiology, 2006, 53(3): 406–411.Google Scholar
- YUE Song. Preparations and structure characterization of the crystals of ferrous cysteine [J]. Chemical Research and Application, 2000, 12(4): 387–390. (in Chinese)Google Scholar