【摘 要】
：
从江西德兴铜矿酸性矿坑水中分离得到l株嗜酸细菌(命名为DX-A),该菌株为革兰氏阴性菌,短杆状,菌体宽×长为(0.45～0.55) μm×(1.1～2.1) μm,最适生长pH为3.5,最适生长温度为30
【机 构】
：
中南大学资源加工与生物工程学院,长春黄金研究院,东华大学环境科学与工程学院
论文部分内容阅读
从江西德兴铜矿酸性矿坑水中分离得到l株嗜酸细菌(命名为DX-A),该菌株为革兰氏阴性菌,短杆状,菌体宽×长为(0.45～0.55) μm×(1.1～2.1) μm,最适生长pH为3.5,最适生长温度为30℃.该菌能利用FeCl3及多种硫化矿和葡萄糖等多种有机物进行生长,但是不能利用FeSO4进行生长,因而该菌为兼性异养型细菌.构建该菌的系统发育树,研究表明:菌株DX-A与Acidiphilium sp.PK46(AY765995)位于系统发育树的同一分支中,相似度为99％;菌株DX-A分别浸出黄铁矿和铁闪锌矿28 d后,含菌摇瓶中Fe2+与Zn2+的质量浓度分别可达到2.36g/L和2.47 g/L,而对照组中Fe2+与Zn2+的质量浓度分别为0.60 g/L和0.39 g/L;菌株DX-A和A.ferrooxidans ATCC23270混菌分别浸出黄铁矿和铁闪锌矿比A.ferrooxidans ATCC23270单菌浸出效果分别高2.7％和10.3％,表明该菌能够浸出黄铁矿和铁闪锌矿并能促进自养菌的浸矿,为进一步研究异养菌促进自养菌浸矿提供了依据.
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