2008•Acta Scientiarum Naturalium Universitatis SunyatseniRequires access

Effect of Cu^2＋ ions on bioleaching of marmatite

陈松, 覃文庆, 邱冠周

Abstract

铁闪锌矿的 bioleaching 上的 Cu2+ 离子的效果通过饮料沥滤被调查实验。接种的细菌是 Acidithiobacillus ferrooxidans， Acidithiobacillus thiooxidans 和 Lepthospirillum ferrooxidans 的一种混合文化。结果证明那锌有选择地被沥滤，并且 Cu2+ 离子的适当内容的增加在铁闪锌矿的 bioleaching 上有积极效果。沥滤的残余的 SEM 和 EDX 分析表明产品层在矿物质表面上铁硫化物，元素的硫和 jarosite 形式创作了。元素的硫的 biooxidation 被 Cu2+ 离子催化，它消除障碍到铁闪锌矿的 bioleaching 并且使 pH 价值低。与 0.5 个 g/L Cu2+ 离子的增加，最大的锌抽取率在 30 的温度在 23 d 以后到达 73%? 吗？？

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Key concepts: Bioleaching, Jarosite, Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans, Metallurgy, Chemistry, Acidithiobacillus, Nuclear chemistry