کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9636312 | 465431 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Kinetics of copper removal from acidic mine drainage by a liquid emulsion membrane
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Copper was removed from an acidic mine drainage (AMD) using a liquid emulsion membrane contactor. The acidic drainage was a harmful natural acidic solution generated by bioleaching and chemical leaching of copper and iron sulfides, with average pH between 2 and 4. Normally the content of copper in AMD is low, which makes its recovery by SX uneconomical. The kinetics of copper removal in a stirred transfer cell was studied, using a salicylaldoxime as mobile carrier extractant and Span-80 as surfactant. It was found that the initial extraction rate of copper was affected by the carrier concentration in the liquid membrane and by the pH and metal content in the mine water. A minimum content of surfactant in the organic phase was required to stabilize the emulsion. A transport mechanism based on a diffusion model, which includes the extraction chemical reaction between the metal and the carrier extractant is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Minerals Engineering - Volume 18, Issues 13â14, November 2005, Pages 1224-1232
Journal: Minerals Engineering - Volume 18, Issues 13â14, November 2005, Pages 1224-1232
نویسندگان
F. Valenzuela, J. Cabrera, C. Basualto, J. Sapag-Hagar,