岩石矿物学杂志2009，Vol.28Issue(6)：553-558,6.
微生物胞外聚合物特征组分影响黄铁矿分解作用的实验研究
The effects of the typical components of extracellular polymeric substances (EPS) of microorganism on the bio-decomposition of pyrite
摘要
Abstract
Extracellular polymeric substances (EPS) seem to play an important role in bioleaching. Generally, EPS consist of neutral sugars, lipids, a small amount of amino acid and some metabolites such as organic acid. 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.关键词
黄铁矿/胞外聚合物/微生物分解Key words
pyrite/ EPS/ bio-decomposition分类
天文与地球科学引用本文复制引用
王朝华,陆建军,陆现彩,李娟..微生物胞外聚合物特征组分影响黄铁矿分解作用的实验研究[J].岩石矿物学杂志,2009,28(6):553-558,6.基金项目
国家重点基础研究发展计划资助项目(2007CB815603) （2007CB815603）
国家自然科学基金资助项目(40573001) （40573001）
