Commenced in January 2007
Paper Count: 31100
Performance Enhancement of Membrane Distillation Process in Fruit Juice Concentration by Membrane Surface Modification
Abstract:In this work Membrane Distillation is applied to concentrate orange Juice. Clarified orange juice (11o Brix) obtained from fresh fruits and a sugar solution was subjected to membrane distillation. The experiments were performed on a flat sheet module using orange juice and sucrose solution as feeds. The concentration of a sucrose solution, used as a model fruit juice and also orange juice, was carried out in a direct contact membrane distillation using hydrophobic PTFE membrane of pore size 0.2 μm and porosity 70%. Surface modification of PTFE membrane has been carried out by treating membrane with alcohol and water solution to make it hydrophilic and then hydrophobicity was regained by drying. The influences of the feed temperature, feed concentration, flow rate, operating time on the permeate flux were studied for treated and non treated membrane. In this work treated and non treated membrane were compared in terms of water flux, Within the tested range, MD with surface modified membrane the water flux has been significantly improved by treating the membrane surface.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1055150Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1919
 K.W. Lawson, D.R. Lloyd, Membrane distillation, J. Membr. Sci. 124(1997) 1-25.
 R.W. Schofield, A.G. Fane, C.J.D. Fell, Heat and mass transfer in membrane distillation, J. Membr. Sci. 33 (1987) 299-313.
 M. Khayet, M.P. Godino, J.I. Mengual, Theory and experiments on sweeping gas membrane distillation, J. Membr. Sci. 165 (2000) 261- 272.
 F.A. Banat, J. Simandl, Theoretical and experimental study in membrane distillation, Desalination 95 (1994) 39-52.
 S. Bandini, C. Gostoli, G.C. Sarti, Separation efficiency in vacuum membrane distillation, J. Membr. Sci. 73 (1992) 217-229.
 L. Mart'─▒nez , J.M. Rodr'─▒guez-Maroto ,On transport resistances in direct contact membrane distillation, Journal of Membrane Science 295 (2007) 28-39.
 Gianni Galaverna , Gianluca Di Silvestro , Alfredo Cassano , Stefano Sforza , Arnaldo Dossena , Enrico Drioli , Rosangela Marchelli, A new integrated membrane process for the production of concentrated blood orange juice: Effect on bioactive compounds and antioxidant activity, Food chemistry 2007.
 Thanedgunbaworn , R. Jiraratananon , M.H. Nguyen, Mass and heat transfer analysis in fructose concentration by osmotic distillation process using hollow fibre module, Journal of Food Engineering 78 (2007) 126-135.
 Rico Bagger-J├©rgensen a, Anne S. Meyer a,*, Camilla Varming b, Gunnar Jonsson, Recovery of volatile aroma compounds from black currant juice by vacuum membrane distillation, cJournal of Food Engineering 64 (2004) 23-31.
 A.M. Alklaibi, Noam Lior, Transport analysis of air-gap membrane distillation, Journal of Membrane Science 255 (2005) 239-253