Experimental measurements of short-term adsorption of Acidithiobacillus ferrooxidans onto chalcopyrite

被引：13

作者：

Wang Zhao-hui ^{[1
]}

Xie Xue-hui ^{[1
]}

Liu Jian-she ^{[1
]}

机构：

[1] Donghua Univ, Coll Environm Sci & Engn, Shanghai 201620, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2012年 / 22卷 / 02期

基金：

中国国家自然科学基金;

关键词：

bacterial adsorption; chalcopyrite; ionic strength; hydrophobicity; Acidithiobacillus ferrooxidans; SULFIDE MINERALS; THIOBACILLUS-FERROOXIDANS; BACTERIAL ATTACHMENT; ADHESION; PYRITE; VISUALIZATION; SURFACE;

D O I：

10.1016/S1003-6326(11)61196-5

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The influencing factors in adsorption such as adsorption time, pulp concentration, bacterial concentration, pH as well as ionic strength were investigated to explore the relationship among them and bacterial adsorption. The adsorption was a rapid process for bacterial adhesion to chalcopyrite. The extent of adsorption increased with increasing initial bacterial concentration and pulp concentration. The optimal pH for Acidithiobacillus ferrooxidans adsorption onto chalcopyrite surfaces was in the range of pH 1-3. The increase of ionic strength led to decrease in bacterial adsorption, which can be well explained by electric double layer theory. The adsorption behavior appeared to be controlled by both hydrophobic and electrostatic interactions at the interface of bacteria and mineral.

引用

页码：442 / 446

页数：5

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