Impact of solvent extraction organics on adsorption and bioleaching of A. ferrooxidans and L. ferriphilum

2nd International Conference on Mining, Material and Metallurgical Engineering

矿业工程;材料科学;冶金学

Yu, Hualong^1 ; Liu, Xiaorong^1

School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai

201418, China^1

关键词: Adsorption rates;    Copper solvent extraction;    Ferrooxidans;    L. ferriphilum;    Organics;    Raffinates;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/191/1/012036/pdf
DOI  :  10.1088/1757-899X/191/1/012036

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Copper solvent extraction entrained and dissoluted organics (SX organics) in the raffinate during SX operation can contaminated chalcopyrite ores and influence bioleaching efficiency by raffinate recycling. The adsorption and bioleaching of A. ferrooxidans and L. ferriphilum with contaminated ores were investigated. The results showed that, A. ferrooxidans and L. ferriphilum cells could adsorb quickly on minerals, the adsorption rate on contaminated ores were 83% and 60%, respectively, larger than on uncontaminated ores. However, in the bioleaching by the two kinds of acid bacterias, contaminated ores presented a lower bioleaching efficiency.