پديد آورنده :
گل شناس، ميثم
عنوان :
ساخت و ارزيابي غشا نانو كامپوزيتي پلي وينيل استات بر روي پايه هاي سراميكي و كاربرد آن در فرايند تراوش تبخيري
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
پديده هاي انتقال
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مهندسي شيمي
صفحه شمار :
دوازده،74ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و اگليسي
استاد راهنما :
حميد زيلويي، تورج محمدي
توصيفگر ها :
سيليكافيوم , اتانول
تاريخ نمايه سازي :
21/10/92
استاد داور :
محمدرضا احشاني، مرتضي صادقي
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Synthesis and Characterization of Mullite Polyvinyl Acetate PVAc Composite Membranes for Pervaporation Meysam Golshenas m golshenas@ce iut ac ir Department of Chemical Engineering Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language FarsiSupervisor Hamid Zilouei hzilouei@cc iut ac ir Toraj Mohammadi torajmohammadi@iust ac irAbstractEthanol water azeotropic solution cannot be processed and purified beyond 95 6 by volume usingdistillation Common methods for obtaining absolute ethanol include desiccation using adsorbentssuch as starch corn grits or zeolites which adsorb water preferentially as well as azeotropicdistillation and extractive distillation In recent years there has been an increasing interest inseparation of azeotropic solutions using pervaporation PV using membrane processes to avoid thehigh energy costs and the disadvantages of other techniques However prevalent distillationtechniques have not been replaced by PV due to the failure to develop adequate membranes Asuitable membrane is one which exhibits high selectivity and permeability and can tolerate highpressure gradient which is the driving force for PV performance Zeolite membrane s characteristicscan be summarized as high selectivity permeability and physical stability beside high sensitivity tothermal tensions and difficulties in synthesis and operation Polymeric membranes are cheaper andusually have low sensitivity to thermal tensions and unfortunately low permeability and physicalstability To gather desirable characteristics of these two major types in one membrane the bestsolution is a composite membrane consists of a polymeric active layer on a porous ceramic support Ceramic supports exhibit a high surface porosity and superior structural stability in comparison withpolymeric supports Polymeric membranes are prepared from different polymers Good chemicalstability and low manufacturing cost of polyvinyl acetate PVAc have interested it to use indehydration of ethanol by PV In the present work ceramic supported PVAc composite membraneswere prepared for pervaporation dehydration of ethanol Layers of PVAc loaded with fumed silica
استاد راهنما :
حميد زيلويي، تورج محمدي
استاد داور :
محمدرضا احشاني، مرتضي صادقي
