4778

4497

كارشناسي ارشد

مهندسي شيمي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده مهندسي شيمي

1388

چهارده،117،[II]ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

احمد محب،شاپور رودپيما

26/8/88

محمدرضا احساني، مرتضي صادقي

مهندسي شيمي

ID4497

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

IUT 77142 Degree Master of Science Title Modeling of Pervaporation Separation of Organic Organic Mixtures Through Polymeric Membranes by Using UNIFAC Equation Author Zahra Salehi Supervisor A Moheb Assist Prof Sh Roodpeima Assoc Prof Department Chemical EngineeringDate 08 08 2009 Language PersianAbstract Pervaporation is an efficient membrane process for liquid phase separation and during pastdecades had witnessed substantial progress and exciting breakthrough in both the fundamentaland application aspects Until now so many experimental data without any genuine andcapable model were available to describe this phenomenon The mechanism of pervaporationin polymeric membrane is described by means of a three step process solution diffusion andevaporation In this work separation of the organic organic mixtures through polymericmembranes was modelled based on a solution diffusion mechanism In this model on the feedside equilibrium was assumed between the liquid phase and membrane and the componentsconcentration at the permeate side of the membrane was considered to be zero The UNIFACequations were used to describe the sorption step and the Stefan Maxwell equation wasapplied to describe the transport step The developed model was implemented to predict theseparation of three different liquid binary mixtures through polyurethane PU polymericmembrane The calculated permeate fluxes were compared with the results of the experimentswhich were reported by others By using UNIFAC equation the predicted results for permeateconcentration and flux were found in good agreement with the experimental data in allcomposition ranges Also the results obtained from the developed model were compared withresults of different models based on other equations for prediction of activity coefficient Itwas seen that the developed model has some advantages over other models Keywords Pervaporation Modeling Organic Organic Polymeric Membrane UNIFAC pdfMachine Is a pdf writer that produces quality PDF files with ease Produce quality PDF files in seconds and preserve the integrity of your original documents Compatible across nearly all Windows platforms if you can print from a windows application you can use pdfMachine Get yours now

احمد محب،شاپور رودپيما

محمدرضا احساني، مرتضي صادقي