کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
623329 | 1455338 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modification of the desalination property of PAN-based nanofiltration membranes by a preoxidation method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Modification of the desalination property of PAN-based nanofiltration membranes by a preoxidation method Modification of the desalination property of PAN-based nanofiltration membranes by a preoxidation method](/preview/png/623329.png)
چکیده انگلیسی
Nanofiltration membranes were prepared from polyacrylonitrile (PAN). The microstructure and desalination property of the as-prepared PAN nanofiltration membranes were tuned by a preoxidation method. The thermal stability of PAN membranes is significantly enhanced after preoxidation due to the crosslinking structure formation in the membrane matrix. The crosslinking degree for PAN membranes is improved by preoxidation at high temperatures or low air flowrates. For modified membranes a change in rejection was observed as a function of feed pH. Nanofiltration results have shown that the optimum rejection of 99.98% was achieved for CaCl2 when the PAN membranes were preoxidized at 220 °C with an air flowrate of 416 mL/min, under the feed concentration of 50 mg/L and pH value of 3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 357, 2 February 2015, Pages 208-214
Journal: Desalination - Volume 357, 2 February 2015, Pages 208-214
نویسندگان
Bing Zhang, Dan Wang, Yonghong Wu, Zhi Wang, Tonghua Wang, Jieshan Qiu,