کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4988457 | 1455958 | 2017 | 10 صفحه PDF | دانلود رایگان |
- In suit zwitterionic membrane surface construction.
- Water flux of zwitterionic membrane was increased about 2.4 times.
- The membrane exhibit better antifouling performance to protein and polysaccharide regardless of foulants charge.
Antifouling performance of nanofiltration membrane is critical in applications like water treatment. In this study, surface zwitterionization was conducted by 1, 3-propanesultone ring-opening directly on the nanofiltration membrane prepared by interfacial polymerization of 3,3â²-diamino-N-methyldipropylamine and 1, 3, 5-benzenetricarboxylic chloride. The zwitterionic structures improve the hydrophilicity of nanofiltration membrane, thus increase the water permeability and antifouling performance. The zwitterionic membrane have a 72Â LÂ mâ2Â hâ1 water flux at the optimize condition, which was about 2.4 times that of the pristine membrane without zwitterionization, and with a 89% rejection of MgCl2. Meanwhile, the zwitterionic membrane will have better antifouling performance to protein and polysaccharose. The flux recovery ratio of bovine serum albumin, sodium alginate and lysozyme were all above 95%. The prepared zwitterionic membrane presents prominent high water flux and fouling-resistance performance, indicating it's promising application potential in organic wastewater treatment.
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Journal: Journal of Membrane Science - Volume 541, 1 November 2017, Pages 29-38