کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
625594 | 1455430 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Bromate removal in the ion-exchange process
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
To remove bromates from water, use was made of anion exchange in the process of Donnan dialysis conducted with an anion-exchange membrane. Under such conditions, the removal of bromates from a one-component solution was found to be very high (more than 90%). It was observed that the presence of accompanying anions (NO3â and HCO3â), whose concentrations were by several orders of magnitude higher than the concentrations of bromates, brought about a decrease in the rate and efficiency of bromate removal from the feed. In the process with the Selemion AMV membrane the removal of bromates amounted to approximately 84% at a salt concentration of 300Â mM NaCl in the receiver. Anion exchange in Donnan dialysis with Neosepta AFN (a membrane characterized by a high ion-exchange capacity and a high water content) proceeded at a faster rate and was found to be more efficient only with respect to the ions that dominated in the feed, i.e. nitrates and bicarbonates. In this process the removal of BrO3â ions was less efficient than in the process conducted with the Selemion AMV membrane, and failed to exceed 70%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 261, Issues 1â2, 15 October 2010, Pages 197-201
Journal: Desalination - Volume 261, Issues 1â2, 15 October 2010, Pages 197-201
نویسندگان
Jacek A. WiÅniewski, MaÅgorzata Kabsch-Korbutowicz,