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; Abstract: A native mesophilic iron-oxidizing bacterium, Acidithiobacillus ferrooxidans, has been isolated (30 ℃) from a typical, lead-zinc concentrate.... 2 Experimental 2.1 Bacterial culture and nutrients A mesophilic bacterium, iron–sulphur oxidizing bacteria, isolated from a hot, sulphur-rich metal dump near Liuzhou, Guangxi Province, China......
. [9] BRIDGE T A M, JOHNSON D B. Reduction of soluble iron and reductive dissolution of ferric iron-containing minerals by moderately thermophilic iron-oxidizing bacteria [J]. Appl Environ Microbiol... in bioleaching. They do not oxidize ferrous iron[22]. So Ac. cryptum had bad performance when they were used as the only bacterium in bioleaching. Fig.6 Copper extracted from chalcopyrite by Ac. cryptum......
an acidophilic microbial community[J]. Appl Environ Microbiol, 2005, 71(10): 6319?6324. [17] NORRIS P R, PARROT L, MARSH R M. Moderately thermophilic mineral- oxidizing bacteria[J]. Biotech Bioeng Syn, 1986, 16...] NEMATI M, HARRISON S T L. A comparative study on thermophilic and mesophilic biooxidation of ferrous iron[J]. Minerals Engineering, 2000, 13(1): 19?24. [3] MERUANE G, VARGAS T. Bacterial oxidation......
and the iron-oxidising bacteria Leptospirillum ferrooxidans, have been found as the dominant populations in bioleaching tanks. At temperatures higher than 40 °C, the moderately thermophilic... analyses in bioleaching systems by ZHOU[10], which has high density, high sensitivity and high quantitative capability. In this study, ten mixed cultures of acidophilic microorganisms were collected......
11 September 2014; accepted 17 November 2014 Abstract: Iron L-edge and sulfur K-edge X-ray absorption near edge structure (XANES) spectroscopy analysis of pyrite leached by extreme thermophilic... to now, only few publications concern on the dissolution of pyrite by extreme thermophilic Archaea strain, which shows high extraction rate of metal ions from metal sulfides [11]. In addition, it has been......
, LIU Xue-duan, QIU Guan-zhou. Preservation of Acidithiobacillus caldus: A moderately thermophilic bacterium and the effect on subsequent bioleaching of chalcopyrite [J]. Hydrometallurgy, 2009, 96(4...] have used an artificial microbial community with four known moderately thermophilic acidophiles (A. caldus S1, S. thermosulfdooxidans ST, L. ferriphilum YSK, and F. thermophilum L1) to explore copper......
] Wakao N. Acidiphilium multivorum sp. nov., an acidophilic chemoorganotrophic bacterium from pyritic acid mine drainage[J]. Gen Appl Microbiol, 1994, 40(5): 143-159. [14] Dees P M, Ghiorse W C...% of the bacterium are Acidiphilium. With the energy source including ferrous iron, sulfur and yeast extract, Acidiphilium and Pseudomonas are the dominant species. Key words: microbial metallurgy; microbial......
in the presence of pyrite and a mixed moderately thermophilic culture [J]. Hydrometallurgy, 2013, 137: 53-59. 新颖两步法提高阿希高硫金精矿生物氧化效率 刘新星1,2,王国华1,2,霍 强1,2,谢建平1,2,李寿朋1,2,武海艳1,2,郭玉洁1,2 1. 中南大学 资源加工与生物工程学院,长沙 410083； 2...-stage process combined with pH control on the bio-oxidation efficiency of high-sulfur refractory gold concentrate. 2 Experimental 2.1 Microorganisms and growth conditions A mixed culture of moderately......
:1672-7207(2011)09-2543-08 Classification of thermostable and thermophilic lipases using support vector machines ZHAO Wei, XU You-hou, ZHENG Jia, WANG Yu-gang, ZHOU Hong-bo (School of Minerals...-residue coupling patterns in the sequences of 65 thermostable and 77 thermophilic lipases getting from GenBank were systematically analyzed. Based on the information, a statistical method based......
distribution and control have been investigated in a liquefied petroleum gas (LPG) fluidized bed with hollowcorundum spheres (Al2O3) of 0.867-1.212 mm in diameter at moderately high temperatures (800-1100......
