|
| Effect of Acidity on Bioactivity during Bio-oxidation |
|
Received:October 13, 2017
Revised:October 17, 2017
Accepted:October 23, 2017
Published Online:July 31, 2018
|
| View Full Text View/Add Comment Download reader |
| DOI： |
| KeyWord:high sulfur high arsenic gold concentrate; bio-oxidation; biological activity acidity |
| Author | Institution |
| Wang Meijun |
The comprehensive utilization of the national key laboratory for the comprehensive utilization of gold resources;Xiamen zijin metallurgical technology co. LTD |
| Chen Qinggen |
The comprehensive utilization of the national key laboratory for the comprehensive utilization of gold resources;Xiamen zijin metallurgical technology co. LTD |
| Lin Haibin |
The comprehensive utilization of the national key laboratory for the comprehensive utilization of gold resources;Xiamen zijin metallurgical technology co. LTD |
| Fan Daoyan |
The comprehensive utilization of the national key laboratory for the comprehensive utilization of gold resources;Xiamen zijin metallurgical technology co. LTD |
| Guo Jinyi |
The comprehensive utilization of the national key laboratory for the comprehensive utilization of gold resources;Xiamen zijin metallurgical technology co. LTD |
|
| Hits: 4330 |
| Download times: 2694 |
| Abstract: |
| In order to clarify the impact of acidity on biological oxidation and the impact of the threshold. In this paper, the bacterial culture conditions of bacterial culture, biological oxidation acidity condition test, BIOX biological oxidation test and fluorescence PCR flora structure analysis. The results showed that the acidity had a significant effect on the activity of bacteria, and the initial acidity was controlled at 5 ~ 10 g / L. The high acid environment had adverse effects on pure bacterial culture and mineral oxidation. BIOX biooxidation process, The pH value of the acidity should be controlled at 1.0 ~ 1.3. With the oxidation process, the resistance of the bacteria to the acid in the second stage reactor will increase and the acidity will increase from 10 g / L to 35 g / L. The results of fluorescence PCR showed that the bacterial structure of Sulfobacillus and Ferroplasma decreased by 1 ~ 3, compared with the control acid system. Therefore, the study of the effect of acidity on the activity of bacteria has important guiding significance for the future production and control of the pre-oxidation industry. |
| Close |
|
|
|