Clarification of Synthetic Juice through Spiral Wound Ultrafiltration Module at Turbulent Flow Region and Cleaning Study

Authors: Vijay Singh, Chandan Das

Abstract:

Synthetic juice clarification was done through spiral wound ultrafiltration (UF) membrane module. Synthetic juice was clarified at two different operating conditions, such as, with and without permeates recycle at turbulent flow regime. The performance of spiral wound ultrafiltration membrane was analyzed during clarification of synthetic juice. Synthetic juice was the mixture of deionized water, sucrose and pectin molecule. The operating conditions are: feed flowrate of 10 lpm, pressure drop of 413.7 kPa and Reynolds no of 5000. Permeate sample was analyzed in terms of volume reduction factor (VRF), viscosity (Pa.s), ⁰Brix, TDS (mg/l), electrical conductivity (μS) and turbidity (NTU). It was observe that the permeate flux declined with operating time for both conditions of with and without permeate recycle due to increase of concentration polarization and increase of gel layer on membrane surface. For without permeate recycle, the membrane fouling rate was faster compared to with permeate recycle. For without permeate recycle, the VRF rose up to 5 and for with recycle permeate the VRF is 1.9. The VRF is higher due to adsorption of solute (pectin) molecule on membrane surface and resulting permeateflux declined with VRF. With permeate recycle, quality was within acceptable limit. Fouled membrane was cleaned by applying different processes (e.g., deionized water, SDS and EDTA solution). Membrane cleaning was analyzed in terms of permeability recovery.

Keywords: Synthetic juice, Spiral wound, ultrafiltration, Reynolds No, Volume reduction factor.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1072265

References:

[1] P. Rai, G.C. Majumdar, S. Das Gupta and S. De, "Effect of various pretreatment methods on permeate flux and quality during ultrafiltration of mosambi juice" J. Food Eng., Volume 78, Issue 2, 2007, pp. 561-568.
[2] A.J. Burggraaf and L. Cot, Fundamentals of Inorganic Membrane Science and Technology, in: C.A.M. Siskens (Eds.), Application of ceramic membrane in liquid filtration, Elsevier Science., The Netherlands, 1996, pp. 619-639.
[3] Z. F. Cui and H. S. Muralidhara, Membrane Technology: A Practical Guide to Membrane Technology and applications in food and bioprocessing, first ed., Butterworth-Heinemann publication, 2010, pp. 6-7.
[4] A. Chabeaud, L. Vandanjon, P. Bourseau, P. Jaouen, M. Chaplain- Derouiniot and F. Guerard, "Performances of ultrafiltrationmembranes for fractionating a fish protein hydrolysate: Application to the refining of bioactive peptidic fractions" Sep. Sci. Technol., Volume 66, Issue 3, 2009, pp. 463-471.
[5] N. Jacob, R.K. Sukumaran , P. Prema, Optimization of enzymatic clarification of sapodilla juice: A statistical perspective, Appl. Biochem. Biotechnol., 151 (2008),pp.353-363.
[6] P.D. Gurak, L.M.C. Cabral, M.H.M.R. Leao, V.M. Matta, S.P. Freitas, Quality evaluation of grape juice concentrated by reverse osmosis, J. Food Eng., 96 (2010), pp. 421-426.
[7] A. Cassano, J. Adzet, R. Molinari, M.G. Buonomenna, J. Roig, E. Drioli, Membrane treatment by nanofiltration of exhausted vegetable tannin liquors from the leather industry, Water Res., 37 (2003), pp. 2426-2434.
[8] A. Zirehpour, M. Jahanshahi, A. Rahimpour, Unique membrane process integration for olive oil mill wastewater purification, Sep. Purif. Technol., 96 (2012), pp. 124-131.