Microbial leaching

Japanese: microbial leaching(英語表記)microbialleaching
Microbial leaching

...The main microorganisms used are bacteria such as Thiobacillus ferrooxidans , which grow in environments such as mine water and oxidize sulfur and iron (II). However, in recent years, the role of microorganisms other than bacteria has also been emphasized, and the technology is also called microbial leaching or biohydrometallurgy. This technology can be applied to both low-grade and high-grade ores, but due to the recent harsh mining conditions and the simple process and management of this technology, there is interest in applying it to low-grade ores and waste rocks that cannot be economically processed, and to residual ores left in the mine during mining. ...

*Some of the terminology that refers to "microbial leaching" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…用いる微生物の主役が,鉱山の坑内水のような環境に生育し,硫黄や鉄(II)を酸化するチオバシルス・フェロオキシダンスThiobacillus ferrooxidansなどの細菌bacteriaであるためこう呼ばれる。しかし近年,細菌以外の微生物の役割も重視され,微生物製錬microbial leaching,生物湿式製錬biohydrometallurgyなどとも称される。本技術は低品位鉱,高品位鉱いずれにも適用できるが,最近の厳しい鉱業事情および本技術の工程と管理が簡単である特徴から,経済的に処理できない低品位鉱や廃石に,また採掘時に坑内に掘り残された残鉱に適用するのに関心がもたれている。…

※「microbial leaching」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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