کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10280205 | 465472 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Air-assisted solvent extraction: towards a novel extraction process
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
The air-assisted solvent extraction (AASX) concept uses a solvent-coated bubble to contact the organic and aqueous phases. Compared to conventional solvent extraction, a high contact area can be created using less solvent and the natural buoyancy provided by the air core promotes phase separation. A method of producing coated bubbles exploiting foaming properties of kerosene-based solvent is introduced. Coating thickness is estimated at â3 μm on a 0.44 cm diameter bubble giving a solvent specific surface area of â3000 cm2/cm3, equivalent to a solvent droplet of â20 μm. Such a droplet would have very poor phase separation properties. In extraction tests (500 mg/l Cu solution), high aqueous/organic ratios could be used (e.g., 75:1) while phase separation remained excellent. This shows the potential for AASX to treat large volume, low concentration streams such as acid mine drainage.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Minerals Engineering - Volume 18, Issue 1, January 2005, Pages 83-88
Journal: Minerals Engineering - Volume 18, Issue 1, January 2005, Pages 83-88
نویسندگان
H.M. Tarkan, J.A. Finch,