采集南方某煤矿酸性矿坑水并从中选育分离出一株中等嗜热菌;利用分子生物学鉴定方法确定其为Sulfobacillus属, 典型种为Sulfobacillus thermosulfidooxidans. 将该菌株应用于黄铁矿单体矿物的氧化, 通过扫描电镜观察发现, 黄铁矿浸出前颗粒完整、结构致密, 经预氧化后, 结构疏松, 形成空洞和裂纹, 黄铁矿致密结构被破坏;经过16 d生物预氧化, 单体黄铁矿被氧化60%以上, 达到暴露单体金的目的. 试验结果表明该菌株是一株活性较高的高效嗜热浸矿功能菌.
参考文献
[1] | Fraser K S;Walton R H;Wells J A.Processing of refractory gold ore[J].Minerals Engineering,1991(04):1029. |
[2] | 聂树人;索有瑞.难选冶金矿石浸金[M].北京:地质出版社,1997:223. |
[3] | 黄强.难浸金矿石细菌氧化工艺应用进展[J].国外黄金参考,2000:38. |
[4] | Miller D M .Bio-oxidation of gold-bearing arsenopyrite/pyrite concentrate[D].MSc Dissertation South Africa:University of Cape Town,1990. |
[5] | Ubaldini S;Vegilo F;Toro L.Biooxidation of arsenopyrite to improve gold cyanidation study of some parameters and comparison with grinding[J].Mineral Processing,1997:65. |
[6] | Ake Sandstron.用嗜中温和嗜高温微生物浸出复杂硫化矿[J].湿法冶金,1998(02):57. |
[7] | 裘荣庆 .微生物冶金的应用和研究现状[J].微生物学通报,1995,22(03):180. |
[8] | Yasuhiro;Hirotugu Nishimura;Satoru Asai .Bioleaching of sphalerite by the acidophilic thermoohile Acidianus brierleyi[J].Hydrometallurgy,1998,47:339. |
[9] | 李雅芹;夏伟;钟慧芳 .用中度嗜热菌氧化预处理难浸金精矿回收进的研究[J].微生物学报,1996,36(01):42. |
[10] | HALLBERG K B;Lindstrom E B.Characterization of thiobacillus,a moderately thermophilic acidophile[J].Microbiology,1994:3451. |
[11] | Paul R Norris;Darren A Clark;Jonathan P.Owen;Sara Waterhouse .Characteristics of Sulfobacillus axidophilus sp.nov and other moderately thermophilic mineral-sulphide-oxidizing bacteria[J].Microbiology,1996,142:775. |
[12] | Sanpson M I;Philips C V .Influence of base metals on the oxidizing ability of acidophilic bacteria during the oxidation of ferrous sulfate and mineral sulfide concentrates,using mesophiles and moderate thermophiles[J].Minerals Engineering,2001,14(03):317. |
[13] | 张世柏,谢先德,吴大清.黄铁矿表面及其与Au(HS)-2溶液作用的STM研究[J].矿物学报,1996(01):28-32,100-101. |
[14] | 李久玲;冯大明 等.金在硫化物中呈负价态存在及其形成机理初探[J].地质学报,1995,69(01):67. |
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