嗜酸异养微生物还原浸出深海多金属结核  

Marine Nodules Reduction Bioleaching with Acidophilic Heterotrophs

作　　者：杜竹玮[1] 李浩然[1] 

机构地区：[1]中国科学院过程工程研究所生化工程国家重点实验室,北京100080

出　　处：《有色金属》2005年第1期45-48,共4页Nonferrous Metals

基　　金：国家自然科学基金资助项目 (2 0 1760 61);国家长远发展专项 (DY 10 5 -0 4-0 1-0 8)

摘　　要：用分离海底沉积物样品得到的嗜酸异养微生物,还原浸出深海多金属结核中的MnO2 。反应在酸性条件下进行,厌氧条件下锰还原速度、还原率高于好氧条件。Mn还原率在72h达98%以上。微生物利用MnO2 作为代谢呼吸链最终电子受体,传递氧化有机物产生的电子,还原溶浸MnO2 。Bioreduction of MnO 2 in the marine nodules by acidophilic heterotrophs isolated from submarine sediment is investigated. The reduction rate in acid medium with the anaerobic reaction system is much higher than that with the aerobic system. The leaching recovery of Mn is above 98% in 72h. The MnO 2 is taken as a final acceptor of electrons in the respiratory chain of the metabolism microorganisms, electrons produced by the oxidation of organic substrates are donated to the MnO 2 in the marine nodules, as result the reduced manganese ions into the medium.

关 键 词：好氧条件 电子受体 厌氧条件 微生物利用 MNO2 有机物 酸性条件 嗜酸 代谢 反应 

分 类 号：TG174[金属学及工艺—金属表面处理] R212[金属学及工艺—金属学]