کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7008577 | 1455365 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparing CNTs/Ca-Selective zeolite composite electrode to remove calcium ions by capacitive deionization
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Electrophoretic deposition (EPD) method was used to fabricate Carbon nanotubes (CNTs) and Ca-Selective zeolite composite electrode. The prepared electrode was employed in electrosorption of calcium ions in capacitive deionization. The morphology, porous size distribution, pore volume and electrochemical properties were characterized by scanning electron microscopy, N2 adsorption at 77Â K and Cyclic Voltammetry (CV), respectively. The results obtained from experiments showed that the optimum proportion between CNTs and zeolite was 1:4. It was also found that the optimum applied electrosorption voltage was 2.0Â V and the maximum equilibrium electrosorption capacity was 25Â mg/g with initial Ca2Â + concentration of 750Â mg/L. The electrosorption process could be validated by both of pseudo first and second order kinetic models. Furthermore, the selective ion electrosorption experiments were repeated in solution with different ions, and it was observed that the electrosorption capacities of cations on the CNTs composite electrode followed the order of Ca2Â +Â >Â Mg2Â +Â >Â Na+. Finally, the prepared electrode can be reused in long-term electrosorption process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 326, 1 October 2013, Pages 109-114
Journal: Desalination - Volume 326, 1 October 2013, Pages 109-114
نویسندگان
Youhai Liu, Wei Ma, Zihong Cheng, Jun Xu, Ren Wang, Xin Gang,