کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
640350 | 1456966 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Recovery of ReO4â by weakly basic anion exchangers: Modeling of sorption equilibrium and rate
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
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چکیده انگلیسی
Equilibria and dynamics of rhenium uptake from nitrate, chloride and sulfate matrices using weak base anion exchangers have been studied. Gel-type IRA-67 containing tertiary amine groups and macroporous WP-1 containing primary, secondary and tertiary groups were used. Experimental equilibrium and batch kinetic data were correlated using various ion exchange and intra-particle diffusion models. For both exchangers, best correlation was found with the exchange/protonation model including Donnan exclusion and with the surface complexation model. Explicit models requiring no iterations are less accurate but correlate the data satisfactorily. Approximate solution of the Nernst-Planck model was found adequate for correlation of the uptake rates in base-form and fully protonated exchangers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 153, 16 October 2015, Pages 19-28
Journal: Separation and Purification Technology - Volume 153, 16 October 2015, Pages 19-28
نویسندگان
Markku Laatikainen, Sami Virolainen, Erkki Paatero, Tuomo Sainio,