The Studing of Silver Nanoparticle Effect on the Copper Bioleaching Output from Low Grade Sulfidic Ores
American Journal of Nano Research and Applications
Volume 3, Issue 1, January 2015, Pages: 6-11
Received: Jan. 26, 2015;
Accepted: Feb. 8, 2015;
Published: Feb. 28, 2015
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Jamshid Raheb, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
Sorur SHaroknyan, Department of Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
Fatemeh Nazari, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
Yasin Rakhshany, Department of Microbiology, Islamic Azad University North Tehran Branch, karaj, Iran
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The extraction of metals from ores causes various environmental pollutions. Since Iran is located on the so-called ‘copper belt’ and holds a significant share of the world’s copper mines and resources, reduction of pollution from these mines can have an important effect on the overall reduction of pollution. Copper processing methods include pyrometallurgy and hydrometallurgy. Pyrometallurgy is mainly used in high grade mines whereas hydrometallurgy process is used in lower grade mines. In low grade copper sulfide mines, hydrometallurgy processes are used which use a lot of energy to covert mineral deposits into oxide forms which are then leached using sulfuric acid, or are extracted using bioleaching process. In acidic leaching, a lot of environmental pollution is created. Bioleaching process is an environmentally-friendly method which is mainly used in mines where the common physicochemical methods are not profitable. In this study, we have tried to increase the efficiency of bioleaching process by adding silver nanoparticle in order to increase the popularity of this method. For this purpose, initially the indigenous bacteria were separated from the ores and after adoption to silver, the bacteria were used in bioleaching tests. Three concentrations of silver component were used for the bioleaching tests. The results were compared to cases where no bacteria and no silver compounds were used, which showed significant increase in copper extraction efficiency. In the next step, the optimum concentration of silver was used in the percolation column. In this stage, four columns were set up for ‘with bacteria and silver’, ‘with silver’, ‘with bacteria’ and ‘without bacteria and silver’. Results show that the column with bacteria and silver produced the highest efficiency of copper extraction.
Silver Nanoparticle, Bioleaching, Copper, Ores
To cite this article
The Studing of Silver Nanoparticle Effect on the Copper Bioleaching Output from Low Grade Sulfidic Ores, American Journal of Nano Research and Applications.
Vol. 3, No. 1,
2015, pp. 6-11.
Najafi M. the series of articles from the first seminar about mine and related sciences, Azad university press of Tabas 1385.
Rahimi N. procedures in using coal in power plants, the series of articles about strategic of the energy1376; vol. 1.
Shokofeh N. Protecting of eco-environment in mines, eco-environment protection organization publicate1382.
Orei and Tarigi. Benefitting of Iran coal mines Amir Kabir investigation and scientific publication1378; year 11, No. 41.
Neale J. Bioleaching technology in minerals processin. Mintek, Biotechnology Division 2006; p. 110-115.
Davis B, Carol S Nicolle J and Paul R .Ferrous iron oxidation and leaching of copper ore with halotolerant bacteria in ore columns. Hydrometallurgy 2008; 94(1–4): p. 144-147.
Lundgren D G and Silver M. Ore leaching by bacteria. Annu. Rev.Microbial 1980; 34: p. 263-283.
Munoz DB and Dreisinger WC. Silver- catalyzed bioleaching of low-grade copper ores, Part III Column reactors, Hydrometallurgy 2007; 88 P:35-57
Dee Jay F, Debby F, Karen SM and Daphne LS. Evaluation of a Fluorescent Lectin-Based Staining Technique for Some Acidophilic Mining Bacteria. Applied and enviromental microbiology 2000; 5(66): p. 2208-2210.
Barrie D and Jonhnson N O. Effect of temperature on the bioleaching of chalcopyrite concentrates containing different concentration of silver. Hydrometallurgy ; 2008 Vol 94 p:42-47.
Foucher S, Battaglia-Brunet F, Hugues P, Clarens M, Godon JJ and Morin D. Evolution of the bacterial population during the batch bioleaching of a cobaltiferous pyrite in a suspended-solids bubble column and comparison with a mechanically agitated reactor. Hydrometallurgy 2003; 71(1–2): p. 5-12.
Rawlings DE. Heavy metal mining using microbes. Annu Rev Microbiol 2002; 56: p. 65-91.
Chen Z and Zhong L 2002. Growth Kinetics of Thiobacilli Strain HSS and Its Application in Bioleaching Phosphate Ore. Industrial & Engineering Chemistry Research 2002; 41(5): p. 1329-1334.
Ac¸ıkel a, Ü,.Ers¸ana M. and Sag˘ Ac Y. Optimization of critical medium components using response surface methodology for lipase production by Rhizopus delemar. food and bioproducts processing. Microbiol 2010; 8 8: p. 31–39.
Rohwerder T and Gehrke T. Bioleaching review part A: progress in bioleaching: fundamentals and mechanisms of bacterial metal sulfide oxidation. Appl Microbiol Biotechnol 2003; 63(3): p. 239-48.
Gardner M.N, Deane S M. and Rawlings D E. Isolation of a New Broad-Host-Range IncQ-Like Plasmid, pTC-F14, from the Acidophilic Bacterium Acidithiobacillus caldus and Analysis of the Plasmid Replicon. Journal of Bacteriology. 2001; 183(11): p. 3303-3309.
Kelly D P and Wood A P. Reclassification of some species of Thiobacillus to the newly designed genera Acidithiobacillus gen gov .,Halothiobacillus gen. gov. and and Thermithiobacillus gen. gov. International journal of systemic and evolutionary microbiology 2000; 50: p. 511-516.
Watling H R . The bioleaching of sulphide minerals with emphasis on copper sulphides - A review, Hydrometallurgy 2006; 84(1–2): p. 81-108.
Watling HR. The bioleaching of sulphide minerals with emphasis on copper sulphides - A review, Hydrometallurgy 2006; 84(1–2): p. 81-108.
Xia Jin-lan, Peng An-an He, huan Yang yu, LIU, Xue-duan QIU and Guan-zhou.. A new strain Acidithiobacillus albertensis BY-05 for bioleaching of metal sulfides ores. Trans.Nonferrous Met.Soc.China 2007; 17: p. 168-175.