- 责任者：Wang Zhaohua (School of Earth Sciences and Engineering ; Nanjing University ; Nanjing 210093 ; China) ; Lu Jianjun
- 刊名：Acta Petrologica et Mineralogica
- 出版年：2009
- 卷期：28(6)
- 关键词：黄铁矿 ; pyrite ; 微生物 ; microorganisms
- 页码：p.553-558
- 图表：2 illus., 1 table, 33 refs.
- 分类号：0700
- issnNo：ISSN1000-6524
- isbnNo：CN11-1966/P
In this paper, glucose, arginine, glucuronic acid and citric acid were used to study the effects of different components of EPS on the leaching of pyrite and indicate the facilitation of the direct contact between microbes and minerals on bioleaching. The iron contents of the experimental solution were measured in order to determine the dissolving rate of pyrite, and scanning electronic microscopy was employed to observe the changes of the surface characteristics of the pyrite. Some preliminary data obtained indicate that some kinds of components of EPS, such as glucuronic acid and citric acid, can promote the dissolution, while sugars and arginine suppress the decomposition, which may be attributed to their surface coating on the pyrite surfaces.