Synergistic effect of particle size,shear rate and driving-force during microfiltration of fruit juices: Toward a relevant choice of pretreatments and filtration conditions |
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| Affiliation: | 1. Qualisud, Université de Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France;2. CIRAD, UMR Qualisud, F-97410, Saint-Pierre, France;1. Centre for Lipid Science and Technology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India;2. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India;1. College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China;2. Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China;1. College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China;2. Department of Biological Systems Engineering, Washington State University, 213 L.J. Smith Hall, Pullman, WA 99164-6120, USA;1. College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China;2. Hebei Meiyesiwei Biotechnology Co. Ltd., 072650, China;1. Key Laboratory of Dairy Biotechnology and Engineering, Education Ministry of P. R. China, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China;2. Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China |
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| Abstract: | With an objective to recommend relevant operating conditions for fruit juice microfiltration, the combined effect of particle size, shear rate and driving-force on fouling was studied. The filterability of three orange juices with different granulometry was estimated at pilot scale under different shear rates and driving forces (flux or TMP, in immersed and side-stream membrane configuration respectively). In flux-driven filtrations, fluxes to avoid an intense fouling were identified (below 5–10 L.h−1.m−2 for studied juices) and the role of juice granulometry on fouling highlighted. In TMP-driven filtrations, whatever the juice granulometry, steady-state fluxes were TMP-independent but shear rate dependent (around 10 and 30 L.h−1.m−2, for 4500 s−1 and 15500 s-1 respectively). The results demonstrated that, whatever their granulometry, juice filterability was higher in low shear rate flux-driven filtrations, than in high shear rate TMP-driven ones, which relativizes the relevance of crossflow filtration. |
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