微生物作用下金的生物地球化学循环及其应用

Biogeochemical Cycle of Gold by Microorganisms

微生物对金的转化和循环有着重要作用,推动了金的生物地球化学循环过程。自然界中微生物先把矿石中的金溶解沥滤出来,再通过微生物的吸附,累积,最后被矿化成二次金,使金在环境中不断循环。文章从能够富集金的微生物种类,及其作用机理和过程进行概述,阐述了微生物在金的生物地球化学循环中所起的作用,有助于理解和推动利用微生物回收金尾矿和含金废弃物中的金元素研究的不断发展进步。

Microorganisms are responsible for the transformation and circulation of gold, and they promote the biogeochemical cycle process of gold. Gold is cycled through dissolution and leaching in gold ores, biosorption, bioaccumulation, and finally soluble gold is minerlized into second gold. To better understand and promote the gold recovery in gold tailings and garbage with microorganisms, this review summrized the role of microorganism in biogeochemical cycle of gold, with focuses on species, mechanism of microorganism in the processes of gold concentration.