中度嗜热嗜酸铁氧化细菌对Fe^(2+)的氧化  

Study on Fe^(2+)Oxidation by Moderately Thermoacidophilic Iron-oxidizing Bacteria

作　　者：李雅芹[1] 何正国[1] 

机构地区：[1]中国科学院微生物研究所,北京100080

出　　处：《有色金属》2003年第1期37-38,59,共3页Nonferrous Metals

基　　金：国家自然科学基金资助项目 (5 9834 15 0 )

摘　　要：研究中度嗜热嗜酸铁氧化细菌MLY菌株氧化Fe2 +的影响因素。结果表明 ,Leathen培养基添加 0 2g/L酵母粉效果较好。Cu2 +,Co2 +和Ni2 +浓度 >0 5g/L时 ,Fe2 +氧化率随重金属离子浓度升高而降低 ,浓度 >1 5g/L时 ,Co2 +,Ni2 +影响更显著。Fe2 +浓度增加降低氧化率和氧化速度 ,[Fe2 +] >45 0 g/L时 ,细菌氧化作用停止。浓度为 2 0～ 12 0g/L的Fe2 +完全氧化时 ,Fe2 +氧化速度随Fe2The effective factors of Fe 2+ oxidation by the moderately thermoacidophilic iron oxidizing bacteria, strain MLY, are studied The results indicate that the Leathen medium with 0 2g/L yeast extract is the best When the concentration of Cu 2+ , Co 2+ and Ni 2+ in medium is more than 0 5g/L, the oxidation ratio of Fe 2+ is decreased with the increase of these ions concentration, and while the concentration is more than 1 5g/L, the effects of Co 2+ and Ni 2+ are more obvious than Cu 2+ The oxidation ratio and speed of Fe 2+ decrease with the increase of the Fe 2+ concentration The oxidation of Fe 2+ is stopped while the Fe 2+ concentration is more than 45 0g/L For Fe 2+ concentration of 2 0～12 0g/L and Fe 2+ oxidized completely, the speed of Fe 2+ oxidation is increased in some extent

关 键 词：冶金技术 Fe^2+氧化 中度嗜热嗜酸铁氧化细菌 营养 重金属离子 

分 类 号：TF803.21[冶金工程—有色金属冶金] TF831