کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
634918 1456081 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Click poly(ethylene glycol) multilayers on RO membranes: Fouling reduction and membrane characterization
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Click poly(ethylene glycol) multilayers on RO membranes: Fouling reduction and membrane characterization
چکیده انگلیسی

Membrane fouling is one of the most important challenges in reverse osmosis operation. In this study, low-fouling, poly(ethylene glycol) (PEG) acrylate multilayers were assembled via the layer-by-layer technique on a commercial polyamide reverse osmosis membrane and stabilized using click chemistry. Resistance to fouling of the membrane surface with a model biopolymer increased as the number of PEG bilayers was increased. This trend was consistent with the measured surface contact angles of the membranes and with scanning electron microscopy images before and after fouling experiments. Importantly, the flux through unfouled membranes fell only marginally (9–17%) due to the presence of the multilayer coating. AFM images of the coated and uncoated membranes showed little change in surface roughness, supporting the hypothesis that the coating layer is of thickness in the nanometer range. This coating strategy holds promise for the preparation of membranes that are both high in flux and resistant to fouling.


► (PEG) acrylate multilayers assembled via the LBL technique on an RO membrane.
► Flux loss was minimal due to limited coating thickness.
► Resistance to fouling with alginate increased.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volumes 409–410, 1 August 2012, Pages 9–15
نویسندگان
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