کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
623249 | 1455333 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Transportation characteristics of bisphenol A on ultrafiltration membrane with low molecule weight cut-off
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
The retention properties of an ultrafiltration (UF) membrane with 1000Â Da molecule weight cut-off (MWCO) were investigated using bisphenol A (BPA) as a model hydrophobic solute under the influence of different electrolyte ions and varying pH. The Stokes radius of the hydration molecule of the BPA was calculated with the hydrodynamic model by simulation of BPA transportation in the membrane. The rejection efficiencies of BPAs were found to visibly decrease in the presence of various ions (Na+, Li+, Mg2Â +, H+ and OHâ), while simulation results showed that the effective radius of the hydration molecules reduced accordingly. The lowering of the BPA rejection efficiency induced by ions followed the laws of Hofmeister series, i.e., Mg2Â +Â >Â Li+Â >Â Na+ and H+Â >Â OHâ. It is proposed that the added ions may compete water with BPA hydration molecules and cause their partial dehydration, which causes a decrease in the effective radius of the BPA molecules. This research bolsters our understanding on the effects of hydration and dehydration on the removal of hydrophobic emerging contaminants in UF membranes with low MWCO.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 362, 15 April 2015, Pages 18-25
Journal: Desalination - Volume 362, 15 April 2015, Pages 18-25
نویسندگان
Fang-Bo Zhao, Cong-Cong Tang, Xu-Yang Liu, Feng-Jiao Shi, Xiang-Ru Song, Yu Tian, Zhan-Shuang Li,