Bioleaching of Low Grade Uranium Ore of Saghand Mine

Document Type: Research Note

Authors

1 ineral Processing Group, Faculty of Engineering, Tarbiat Modares University, Tehran, I.R. IRAN

2 Biotechnology Group, Faculty of Engineering, Tarbiat modares University, Tehran, I.R. IRAN

3 Mineral Processing Group, Faculty of Engineering, Tarbiat Modares University, Tehran, I.R. IRAN

4 EMKA Company, Iran Atomic Energy Organization, Tehran, I.R. IRAN

Abstract

This study deals with bioleaching of the low grade uranium ore of Saghand mine in Iran using a mixed culture of mesophilic bacteria (Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans and Leptospirillum ferrooxidans). Experiments were carried out in shaking flask examining the effect of temperature, initial ferrous ion concentration, pulp density and particle size. Variations of pH, Eh, ferrous ion concentration, cells growth and uranium extraction were monitored. The highest rates of leaching and extraction were obtained at 35ºC, 2.5% (w/v) pulp density, 4 g/l ferrous ion and - 106µm particle size.  

Keywords

Main Subjects


[1] Mathur A.K., Viswamohan K., Mohanty K.B., Murthy V.K., Seshardrinath, S.T., 2000.Uranium Extraction Using Biogenic Ferric Sulfate: a Case Study on Quartz Chlorite Ore from Jaduguda, Singhbhum Thrust Belt (STB), Bihar, India. Minerals Engineering, 13(5), 575-579.

[2] Agate A.D., Recent Advances in Microbial Mining, World Journal of Microbiology and Biotechnology, 12, p. 487 (1996).

[3] Bosecker K., Bioleaching: Metal Solubilization by Microorganisms, FEMS Microbiology Reviews, 20, p. 591 (1997).

[4] Moon-Sung, Choi., Kyung-Suk, Cho., Dong-Su, Kim., Hee-Wook, Ryu., Bioleaching of Uranium from Low Grade Black Schists by Acidithiobacillus ferrooxidans, World Journal of Microbiology & Biotechnology, 21, p. 377 (2005).

[5] Munoz J.A., Ballester A, Gonzalez F., Blazquez M.L., A Study of the Bioleaching of a Spanish Uranium Ore. Part II: Orbital Shaker Experiments, Hydrometallurgy, 38, p. 59 (1995a).

[6] Munoz J.A., Gonzalez F., Blazquez M.L., Ballester A., A Study of the Bioleaching of a Spanish Uranium Ore. Part I: A Review of the Bacterial Leaching in the Treatment of Uranium Ores, Hydrometallurgy, 38, p. 39 (1995b).

[7] Kawatra S.K., Natarajan K.A., "Mineral Biotechnology", SME (USA), pp 101-115 (2001).

[8] Munoz J.A., Gonzalez F., Ballester A., Blazquez M.L., Bioleaching of a Spanish Uranium Ore, FEMS Microbiology Reviews, 11, p. 109 (1993).

[9] Russian Federation Ministry of Atomic Energy., [Report of Processing Technology Developed for Uranium Ores from Saghand Deposit IslamicRepublicofIran] (1996).

[10] Ronald M.A., "Handbook of Microbiological Media", Second Ed. Robert Stern Publisher,New York(1997).

[11] Underwood A.L., Day R.A.,. "Quantitative Analysis", Prentice Hall,London, pp 645-646 (1991).

[12] Ryu H.W., Cho K.S., Chang Y.K., Kim S.D., Mori T., Refinement of Low-Grade Clay by Microbial Removal of Sulfur and Iron Compounds Using Thiobacillus ferrooxidans, Journal of Fermentation and Bioengineering, 80, p. 46 (1995).

[13] Tuovinen O.H., Bhatti T.M., Bigham J.M., Hallberg K.B., Garcia O., Lindstrom E.B., Oxidative Dissolution of Arsenopyrite by Mesophilic and Moderately Thermophilic Acidophiles, Appl Envir Microbiol, 60, p. 3268 (1994).

[14] Gomez C., Blazquez M.L., Ballester A., Bioleaching of a Spanish Complex Sulfide ore Bulk Concentrate. Minerals Engineering, 12, p. 93 (1998).

[15] Deveci H., Effect of Solids on Viability of Acidophilic Bacteria, Minerals Engineering, 15, p. 1181 (2002).

[16] Olubambi P.A., Ndlovu S., Potgieter J.H., Borode J.O., Effects of Ore Mineralogy on the Microbial Leaching of Low Grade Complex Sulfide Ores, Hydrometallurgy, 86, p. 96 (2007).