سال انتشار: ۱۳۸۶
محل انتشار: پنجمین کنگره بین المللی مهندسی شیمی
تعداد صفحات: ۱۰
Zahedi – Simulation and AI Research Center, Department of Chemical Engineering, Razi University , Kermanshah, Iran
Ali Elkamel – Department of Chemical Engineering, University of Waterloo, Ontario, N2L 3G1, Canada
Monjezi – Simulation and AI Research Center, Department of Chemical Engineering, Razi University , Kermanshah, Iran
The extraction of nimbin from neem seeds using supercritical carbon dioxide is investigated in this paper. A model that accounts for intraparticle diffusion (De) and external mass transfer of nimbin (kf) is presented for the supercritical extraction process. The following range of conditions: 0.24– ۱٫۲۴cm3/min of CO2, 10–۲۶MPa, 308–۳۳۳K, 1.0–۲٫۵g of neem kernel powder and 0.0575–۰٫۱۸۵cm of particle size of neem kernel powder, were considered. Proposed model was solved numerically and results were successfully validated with experimental data.