دانلود مقاله Analysis of Whole Range of Flux Behavior during Full Scale Apple Juice Ultrafiltration Process
سال انتشار: ۱۳۸۶
محل انتشار: پنجمین کنگره بین المللی مهندسی شیمی
تعداد صفحات: ۷
Yazdanshenas – Department of Research and Development of Iran Behnoush Co, Tehran, Iran.
Tabatabaee nezhad – Department of Chemical Engineering of Sahand University of Technology, Tabriz, Iran.
Roostaazad – Department of Chemical and Petroleum Engineering of Sharif University of Technology, Tehran, Iran.
Khoshfetrat – Department of Chemical Engineering of Sahand University of Technology, Tabriz, Iran.
Flux reduction was occurred both in the beginning and at the end of operation. Based on the analytical considerations, flux reduction in these two stages are due to fouling and increasing of solute concentration, respectively. For predicting fouling, amongst the studied models, the
empirical model has shown the best fit within about 5 percent error. The most significant advantage of this model to pore blocking models is introducing a steady flux after taking place of fouling while other models predict the flux to be zero at infinite time which is contrary to the observation. Regarding to the flux decline at the end of operation the concentration polarization model has shown a good match with the generated experimental data. The overall flux data was predicted with contribution of fouling and gel-polarization models reasonably.