کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
641979 1457020 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fouling reduction of reverse osmosis membrane by surface modification via layer-by-layer assembly
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Fouling reduction of reverse osmosis membrane by surface modification via layer-by-layer assembly
چکیده انگلیسی

To reduce membrane fouling of reverse osmosis (RO) membrane, we adopted layer-by-layer (LbL) assembly. LbL assembly has received attention as a means of preparing ultrathin layers of composite membranes. In addition, it can suppress membrane fouling due to its hydrophilicity. In this study, we deposited polyelectrolytes on a commercial RO membrane via LbL assembly and especially investigated the effect of layer number on membrane properties. The obtained membranes exhibited antifouling properties, such as high water permeability and high ion rejection, against various hydrophobic foulants. In addition, membrane hydrophilicity increased and surface roughness became smooth as layer number increased. We also found an optimum layer number that admitted highest water permeability. Quartz crystal microbalance with dissipation measurements revealed that the polyelectrolyte multilayer indeed suppresses foulant adsorption. Protein conformational change was low on the polyelectrolyte film surface, compared with that on the polyamide layer.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 99, 8 October 2012, Pages 1–7
نویسندگان
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