کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9636320 | 465431 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Leaching of chalcopyrite and sphalerite using bacteria enriched from a spent chalcocite heap
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Native bioleaching microbes were recovered from a spent chalcocite/chalcopyrite/pyrite heap located at Nifty Copper Mine in Western Australia. As part of the study, methods were developed to enrich and isolate iron and/or sulphur oxidising microbes that thrive in low pH environments. Phenotypic characterisation of native isolates revealed diverse substrate utilisation (chalcopyrite, pyrite, ferrous ion, reduced sulphur as tetrathionate and glucose) as well as displaying growth temperatures between 30 and 50 °C. Their tolerance to changes in pH, temperature, salinity and the presence of metals was also examined. The potential for single isolates to assist the leaching of chalcopyrite and sphalerite concentrates was evaluated. Copper and zinc recoveries from the respective concentrates were greater when native isolates were employed, compared with the use of laboratory reference strains or abiotic conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Minerals Engineering - Volume 18, Issues 13â14, November 2005, Pages 1289-1296
Journal: Minerals Engineering - Volume 18, Issues 13â14, November 2005, Pages 1289-1296
نویسندگان
S.E. Keeling, M-L. Palmer, F.C. Caracatsanis, J.A. Johnson, H.R. Watling,