期刊论文

中文

金属矿山

1001-1250

2018

3

90-96

10.19614/j.cnki.jsks.201803017

湖南省自然科学基金项目（编号:2017JJ4010）； 南华大学博士科研启动基金项目（编号:2016XQD03）；

本校为第一机构

为解决氧化亚铁硫杆菌、嗜铁钩端螺旋菌等中温菌在低温和高酸的吸附尾液中作氧化剂时生长繁殖慢、氧化Fe（2＋）速率低等问题,以耐冷嗜酸硫杆菌为研究对象,结合新疆某地浸采铀现场生产实际,对该菌的生长特性、耐酸驯化和固定化培养进行了探索。结果表明,该菌的接种量以10%为宜;当初始Fe（2＋）浓度为0.3-0.5 g/L时,细菌仍能较快氧化Fe（2＋）;在525℃条件下,耐冷嗜酸硫杆菌氧化Fe（2＋）的速率均高于氧化亚铁硫杆菌,即耐冷嗜酸硫杆菌更适于溶浸液低温环境;耐冷嗜酸硫杆菌耐酸驯化后能在pH=0.31的培养液中保持较好的氧化活性;从生物陶粒表面电镜图片中可以观察出较厚的生物膜,固定化细菌和游离态...

In order to solve problems that the mesophilic bacteria such as Acidithiobacillus ferrooxidans and Leptospiril- lure ferriphilum have slow growth and reproduction and have a low oxidation rate of Fe2＋ as oxidant agent at low temperature in high acidity leaching-finished solution, such issues as the growth characteristics of acidithiobacillus ferrivorans and its acid tolerance domestication and immobilization culture were preliminarily studied, combining with the actual production situation of in-situ leaching uranium in Xinjiang. The experimen...