کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9633044 | 1425876 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Bioleaching of marmatite flotation concentrate by adapted mixed mesoacidophilic cultures in an air-lift reactor
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Bioleaching of marmatite flotation concentrate by adapted mixed mesoacidophilic cultures in an air-lift reactor Bioleaching of marmatite flotation concentrate by adapted mixed mesoacidophilic cultures in an air-lift reactor](/preview/png/9633044.png)
چکیده انگلیسی
Bioleaching of marmatite flotation concentrate by the adapted strains of Acidithiobacillus ferrooxidans and Leptospirillum ferrooxidans in mixed cultures was carried out at initial pH of 2.0, temperature of 35 °C, particle size of â42 μm (over 90%), pulp density of 15% and air flow of 500 L minâ1 in a 10-L air-lift reactor. Experimental results showed that the addition of Fe2+ ion was favorable to improving the growth and activity of leaching bacteria and increasing the dissolution rate of marmatite. In the leaching system with Fe2+ ions added, the weight loss of the concentrate was over 70%, the leaching ratio of zinc was over 80% and the concentration of zinc ions in the leach liquor was about 50 g Lâ1 after 10 days of bioleaching. The technological feasibility of a microbiological process using the adapted strains of Acidithiobacillus ferrooxidans and Leptospirillum ferrooxidans in mixed cultures for extracting zinc from a marmatite flotation concentrate has been demonstrated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mineral Processing - Volume 76, Issues 1â2, 4 April 2005, Pages 3-12
Journal: International Journal of Mineral Processing - Volume 76, Issues 1â2, 4 April 2005, Pages 3-12
نویسندگان
Shaoyuan Shi, Zhaoheng Fang,