Kondrat'eva T F, Pivovarova T A, Krylova L N, Melamud V S, Adamov E V, Karavaĭko G I
Prikl Biokhim Mikrobiol. 2011 Sep-Oct;47(5):572-8.
Pure cultures of indigenous microorganisms Acidithiobacillus ferrooxidans strain TFUd, Leptospirillum ferrooxidans strain LUd, and Sulfobacillus thermotolerans strain SUd have been isolated from the oxidation zone of sulfide copper ore of the Udokanskoe deposit. Regimes of bacterial-chemical leaching of ore have been studied over a temperature range from -10 to +20 degrees C. Effects of pH, temperature, and the presence of microorganisms on the extraction of copper have been shown. Bacterial leaching has been detected only at positive values of temperature, and has been much more active at +20 than at +4 degrees C. The process of leaching was more active when the ore contained more hydrophilic and oxidized minerals. The possibility of copper ore leaching of the Udokanskoe deposit using sulfuric acid with pH 0.4 at negative values of temperature and applying acidophilic chemolithotrophic microorganisms at positive values of temperature and low pH values was shown.
已从乌多坎斯科矿床硫化铜矿石的氧化带中分离出本土微生物嗜酸氧化亚铁硫杆菌TFUd菌株、嗜铁钩端螺旋菌LUd菌株和嗜热嗜酸硫化杆菌SUd菌株的纯培养物。研究了在-10至+20摄氏度温度范围内矿石的细菌化学浸出制度。结果表明了pH值、温度和微生物的存在对铜提取的影响。仅在温度为正值时检测到细菌浸出，且在+20摄氏度时比在+4摄氏度时活性高得多。当矿石含有更多亲水性和氧化矿物时，浸出过程更活跃。结果表明，在温度为负值时使用pH值为0.4的硫酸浸出乌多坎斯科矿床的铜矿石，并在温度为正值和低pH值时应用嗜酸化能自养微生物是可行的。
