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嗜铁钩端螺旋菌氧化难处理金矿的研究

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采用改良双层板方法从酸性矿坑水(AMD)中筛选、鉴定并命名为氧化效果最佳的分离株—嗜铁钩端螺旋菌(Leptospirillum ferriphilum)L J-02.当温度在36~46℃范围内,矿石氧化率呈现出先升后降的趋势;降低pH对提高细菌氧化能力有着显著影响;在接种量不超过10%(v/v)的条件下,接种量的提高有利于矿石的生物氧化.该菌株对难处理金矿的吸附属于Langmuir等温吸附,其吸附平衡常数为8.72 ×10-10 mL/cells,单位质量矿物颗粒的最大吸收能力为1.99 ×109 cells/g.
Study on Oxidization of Refractory Gold Ore by Leptospirillum Ferriphilum LJ-02
Iron-oxidation strains were isolated from AMD by improved double-layer plating cultural technique,among which one strain with highest oxidation ability was identified and named as Leptospirillum ferriphilum LJ-02.Ore oxidation ratio rises and then drops within 36~41 ℃.Drops of pH value have obvious influence on oxidizability of LJ-02.Ore oxidation ratio rises with inoculums amount of 10% (v/v) below.Adsorption of LJ-02 on refractory gold ore is Langmuir isotherm adsorption with adsorption equilibrium constant of 8.72 ×10-10 mL/cells and maximum absorption capacity of unit mass mineral grain of 1.99 ×109 cells/g.

Leptospirillum Ferriphilumdouble-layer plating methodrefractory golden oreadsorption characteristics

刘杰、张旭、朱明龙、谭文松

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华东理工大学生物反应器工程国家重点实验室,上海200237

嗜铁钩端螺旋菌 双层平板培养法 难处理金矿 吸附特性

国家高技术研究发展计划(863计划)项目国家高技术研究发展计划(863计划)项目

2007AA0609042012AA061503

2015

有色金属(冶炼部分)
北京矿冶研究总院

有色金属(冶炼部分)

CSTPCD北大核心
影响因子:1.344
ISSN:1007-7545
年,卷(期):2015.(10)
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