INTERMEDIATE REACTION PROMOTING BACTERIAL LEACHING OF SULFIDE ORES

FAN Weiping; FANG Ping; ZHANG Jun; LIU Houming

您当前的位置：

首页 >

文章列表页 >

INTERMEDIATE REACTION PROMOTING BACTERIAL LEACHING OF SULFIDE ORES

更新时间：2025-12-10

- INTERMEDIATE REACTION PROMOTING BACTERIAL LEACHING OF SULFIDE ORES
- CIESC Journal Issue 2, Pages: 242-246(2004)
- 作者机构：
  
  1. 南京工业大学制药与生命科学学院,江苏,南京,210009
  2. 西北矿冶研究院,甘肃,白银,730900
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 February 2004，
  
  Published：25 February 2004
- 稿件说明：
移动端阅览
FAN Weiping, FANG Ping, ZHANG Jun, et al. INTERMEDIATE REACTION PROMOTING BACTERIAL LEACHING OF SULFIDE ORES[J]. CIESC Journal, 2004, (2): 242-246.
DOI：

FAN Weiping, FANG Ping, ZHANG Jun, et al. INTERMEDIATE REACTION PROMOTING BACTERIAL LEACHING OF SULFIDE ORES[J]. CIESC Journal, 2004, (2): 242-246. DOI：

摘要

对照扫描电镜照片考察了底物对氧化亚铁硫杆菌T.ferrooxidans N1 能量代谢和菌体生长的影响，分析了硫化矿的生物浸出过程中T.ferrooxidans的能量代谢产物之间的反应作用.实验结果表明：T.ferrooxidans的硫代谢产H+为溶液中Fe2+氧化代谢提供了必需的酸性条件；同时破坏了硫化矿晶格向溶液里释放Fe2+和Cu2+，使生物浸铜得到产品成为可能；菌体能量代谢中间产物之间氧化还原反应加快了T.ferrooxidans代谢速率，减缓了Fe3+的水解反应，使硫化矿浸出过程能持续进行；T.ferrooxidans代谢产物之间的氧化还原反应是硫化矿细菌浸出过程的关键.

Abstract

Ferrousion

elemental sulfur and their mixtures were investigated as energy substrates affecting the metabolism ofT. ferrooxidans N1. Also the roles of Fe2+ and of Fe3+ reaction with water in the leaching of sulfide ores were investigated. Based on scanning electron microscopy and theoretical analysis

a new leaching mechanism different from the previously postulated`direct oxidation mechanism’and `indirect oxidation mechanism’ for bacterial leaching was proposed.Sulfur metabolism of T. ferrooxidans N1 was assumed to greatly influence bacterial leaching of sulfide minerals. Experimental results showed that sulfur metabolism of T. ferrooxidans N1 produced H+

and developed the necessary acidic condition for the oxidative metabolism of Fe2+ in the liquid phase.Reactions among intermediates in the energy metabolism of T. ferrooxidans N1 promoted growth and facilitated sulfide mineral leaching and also altered hydration of ferric iron ions. Therefore the enzymatic intermediates in the metabolism of T. ferrooxidans N1 played a central role in the bacterial leaching process.

关键词

Keywords

references

Views

205

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effect of belt structure design on the vulcanization characteristics of all-steel radial tires

Optimization of heat storage and release cycle performance of Ca(OH)2/CaO indirect reactor

Heat transfer mechanisms, bottleneck identification and optimization in heat exchanger networks under variable operating conditions

Engineering verification and NO emission control of rare earth Y2O3-based catalytic coatings on a metal fiber surface burner

Study on the residence time distribution characteristics of the TPMS-Diamond static mixer

Related Author

No data

Related Institution

No data

⁰