کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
596007 | 1454032 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Interaction between congo red and copper in a binary adsorption system: Spectroscopic and kinetic studies
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Interaction between congo red and copper in a binary adsorption system: Spectroscopic and kinetic studies Interaction between congo red and copper in a binary adsorption system: Spectroscopic and kinetic studies](/preview/png/596007.png)
چکیده انگلیسی
This study focused on the competitive adsorption of congo red (CR) and copper by chitosan hydrogel beads in a binary adsorption system. Spectroscopic analysis, including Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) were integrated with kinetic studies to elucidate the interaction. It was determined that chitosan hydrogel beads show better adsorption performance towards congo red and copper in single adsorption systems. The addition of copper caused a 25% reduction in congo red adsorption capacity, while copper adsorption was enhanced slightly by the presence of congo red. The adsorption results for binary adsorption systems seem due to competition for the present amine and hydroxyl groups that may occur between congo red and copper. A congo red-copper complex was formed in binary adsorption systems. Copper attached to chitosan hydrogel beads individually or was bound by the congo red-copper complex, which resulted in an increase in adsorption capacity. Chitosan exhibited higher adsorption selectivity to the free Cu2+ ion than the congo red-copper complex in the binary adsorption system. Adsorption of the congo red-copper complex indicated an inhibition in the attachment of the free Cu2+ ion in the form of Cu(II).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 340, Issues 1â3, 15 May 2009, Pages 86-92
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 340, Issues 1â3, 15 May 2009, Pages 86-92
نویسندگان
Shao-Xiang Teng, Shu-Guang Wang, Xian-Wei Liu, Wen-Xin Gong, Xue-Fei Sun, Jiang-Jie Cui, Bao-Yu Gao,