:: Volume 4, Issue 4 (Oct-Dec 2017) ::
Nutr Food Sci Res 2017, 4(4): 25-30 Back to browse issues page
Simulation of the Effect of Centrifugation on Membrane Efficiency by Using Computational Fluid Dynamics During the Clarification of Pomegranate Juice
Asieh Aghaei , Hossein Mirsaeedghazi , Yousef Ramezan
Department of Food Sciences and Technology, Faculty of Advanced Sciences and Technology, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
Abstract:   (746 Views)

Background and Objectives: Pomegranate juice is prone to turbidity, which makes it hard to preserve and concentrate. Microfiltration is one of the membrane processes that can be used to reduce its turbidity, but, it is prone to membrane fouling. Pretreatment is considered the most effective way to reduce membrane fouling.
Materials and Methods: This study simulated the effect of centrifugation on membrane clarification during the filtration of pomegranate juice using computational fluid dynamics. The geometry of the membrane unit was plotted in GAMBIT software and meshed with quad-mapped meshes, and the problem was solved using fluent software. Samples were centrifuged  at 2000 and 4000 rpm for 5 and 10 min.
Results: The results of simulation showed that centrifugation at 2000 rpm for 10 min had the highest permeate flux. One the other hand, centrifugation at 4000 rpm had the lowest permeate flux. The experimental results were in agreement with the simulation results.
Conclusions: Velocity of centrifugation should be controlled to maintain the optimum level and achieve the best results. In this study centrifugation at 2000 rpm improved the process yield.

Keywords: Centrifugation, CFD, Clarification, Membrane, Pomegranate, Simulation
Full-Text [PDF 372 kb]   (366 Downloads)    
Type of Study: Research | Subject: General
Received: 2017/05/10 | Accepted: 2017/10/14 | Published: 2017/10/14
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Volume 4, Issue 4 (Oct-Dec 2017) Back to browse issues page