کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9684929 | 1456218 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mass transfer in extractive ultrafiltration of α-phenylglycine with TOMACl in a hollow fiber contactor
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Extractive ultrafiltration of α-phenylglycine from sodium hydroxide solutions with the ion-exchange extractant trialkylmethylammonium chloride (TOMACl) dissolved in toluene using a microporous polypropylene hollow fiber contactor has been studied. The effect of the hydrodynamic conditions on the mass-transfer rates was determined. The overall mass-transfer coefficients were calculated by two different methods, i.e. assuming a constant distribution coefficient and using an equilibrium model. Individual mass-transfer coefficients were estimated by two alternative methods: Wilson-plot two-step calculation, and a more accurate one-step calculation. It is shown that a correct equilibrium model is required for the estimation of the mass-transfer coefficients. The influence of feed concentration, flow pattern and the composition of the stripping solution on the extractive ultrafiltration performance is also reported.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 252, Issues 1â2, 15 April 2005, Pages 9-18
Journal: Journal of Membrane Science - Volume 252, Issues 1â2, 15 April 2005, Pages 9-18
نویسندگان
L. Burgos, M.O. Ruiz, J.L. Cabezas, J.M. Benito, I. Escudero, J. Coca,