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Effect of amino acids on bioleaching of chalcopyrite ore by Thiobacillus ferrooxidans

机译:氨基酸对氧化铁硫杆菌对黄铜矿矿石生物浸出的影响

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Amino acids seem to play a major role during bioleaching of chalcopyrite ore byThiobacillus?ferrooxidans. Efficiency of microbial leaching of chalcopyrite by?T. ferrooxidans?was investigated in the presence of L-aspartic acid, L-glutamic acid, L-histidine and L-serine. The bioleaching of copper ion (Cu2+)?from the low grade ore increased significantly in the presence of L-serine. Although the leaching was increased in the presence of L-aspartic acid, L-glutamic acid and L-histidine during the initial period, it was observed to decrease after a few days. However, in the L-serine supplemented medium, a steady state of leaching was maintained for a reasonable time.
机译:氨基酸似乎在硫氧杆菌氧化亚铁对黄铜矿的生物浸出过程中起主要作用。黄铜矿浸出黄铜矿的效率在存在L-天冬氨酸,L-谷氨酸,L-组氨酸和L-丝氨酸的条件下研究了四氧化二铁。在L-丝氨酸存在下,低品位矿石中铜离子(Cu2 +)2的生物浸出显着增加。尽管在最初阶段在L-天冬氨酸,L-谷氨酸和L-组氨酸的存在下浸出增加,但是观察到几天后减少。然而,在补充L-丝氨酸的培养基中,在合理的时间内保持了稳定的浸出状态。

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