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Iranian Journal of Chemistry and Chemical Engineering، جلد ۲۵، شماره ۳، صفحات ۲۱-۲۶
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عنوان انگلیسی Copper Recovery from Chalcopyrite Concentrate by an Indigenous Acidithiobacillus ferrooxidans in an Air-Lift Bioreactor
چکیده انگلیسی مقاله In this study, effects of solid concentration, temperature, and initial Fe2+ concentration on bioleaching of sulfide mineral (chalcopyrite) obtained from Sarcheshmeh Copper Mine in the region of Kerman located in the south of Iran were investigated. A mesophilic iron oxidizing bacterium, Acidithiobacillus ferrooxidans has been isolated from a typical chalcopyrite copper concentrate of the mentioned mine. Bioleaching experiments were carried out in two batch air-lift bioreactors with recycling stream. One reactor contained 2 liters of medium and 10% (v/v) inoculum while in the other reactor, control bioleaching tests were carried out with sterilized concentrate without inoculum by the addition of 40 ml of 0.5% (v/v) formaline in ethanol. The results indicate that the efficiency of copper extraction is dependent on all of the aforementioned variables. In addition, results show that the effects of solid concentration and temperature had more effect compared to the initial Fe2+ concentration. Maximum copper recovery was achieved 70% at pH=1.5, initial Fe2+ concentration=7g/L and pulp density = 10% (w/v) in bioreactor, after 10 days.
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نویسندگان مقاله سید محمد موسوی | sayyed mohammad
department of chemical and petroleum engineering, sharif university of technology, tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه صنعتی شریف (Sharif university of technology)

منوچهر وثوقی |
department of chemical and petroleum engineering, sharif university of technology, tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه صنعتی شریف (Sharif university of technology)

سهیلا یغمایی |
department of chemical and petroleum engineering, sharif university of technology, tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه صنعتی شریف (Sharif university of technology)

آرزو جعفری |
department of energy and environmental engineering, lappeenranta university of technology, lappeenranta, finland

نشانی اینترنتی http://www.ijcce.ac.ir/article_8045_954cd666990f16554ec42357348b5b28.pdf
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