کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10378092 | 880749 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Determination of kinetic parameters of Cu(II) interaction with chemically modified thin chitosan membranes
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Determination of kinetic parameters of Cu(II) interaction with chemically modified thin chitosan membranes Determination of kinetic parameters of Cu(II) interaction with chemically modified thin chitosan membranes](/preview/png/10378092.png)
چکیده انگلیسی
In this work, vanillin-modified thin chitosan membranes were utilized as adsorbents for the removal of Cu(II) from aqueous solutions. A rise of temperature accelerates mass transfer of Cu(II) to the membranes surfaces. The kinetic data did present a rough fit to the traditional Lagergren adsorption kinetic equations. An alternative Avrami kinetic equation was successfully fitted to the kinetic adsorption quantities. From this new equation, from one to three regions presenting distinct kinetic parameters were found, and the use of the parameter n was also related to the determination of the kinetic orders. Variations of the adsorption rate in relation to the contact time and the temperature were also calculated and are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 285, Issue 1, 1 May 2005, Pages 288-295
Journal: Journal of Colloid and Interface Science - Volume 285, Issue 1, 1 May 2005, Pages 288-295
نویسندگان
Antonio R. Cestari, Eunice F.S. Vieira, Joana D.S. Matos, Débora S.C. dos Anjos,