Bioleaching of Uranium Ore Containing Fluorite Using Acidithiobacillus ferrivoran, Acidithiobacillus ferrooxidans and Leptospirillum ferriphilum

DOI

10.2991/iceesd-17.2017.182How to use a DOI?

Keywords

pitchblende; MLA; bioleaching; mixed culture;

Abstract

The results of MLA automated quantitative mineralogy system indicated the uranium ore used in this study was mainly composed of pitchblende (0.47%), quartz (64.91%), fluorite (2.18%) and pyrite (0.44%). The existence of fluorine-containing minerals plays a strong inhibition role of bacterial activity in the bioleaching process. The chemical characteristics showed that the content of U ( ) (0.18%)was significantly higher than that of U ( ), and the U ( ) / U ( ) ratio was 4.5. It is difficult to dissolve with sulfuric acid due to relatively higher U ( ) in this uranium ore. The fluoride-tolerance mixed microbes were used for bioleaching of uranium, and the bioleaching and acid leaching experiments of fluoride-containing uranium ore were investigated in column reactor. The uranium extration rate of bioleaching column reached 72% in 38 days, using bioleaching have obvious advantages compare to conventional acid leaching (65%).

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xiaolan Mo
AU  - Xiang Li
AU  - Jiankang Wen
AU  - Liulu Cai
PY  - 2017/04
DA  - 2017/04
TI  - Bioleaching of Uranium Ore Containing Fluorite Using Acidithiobacillus ferrivoran, Acidithiobacillus ferrooxidans and Leptospirillum ferriphilum
BT  - Proceedings of the 2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017)
PB  - Atlantis Press
SP  - 1011
EP  - 1014
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceesd-17.2017.182
DO  - 10.2991/iceesd-17.2017.182
ID  - Mo2017/04
ER  -