alexa Cross flow ultrafiltration studies on solutions of pectin with pulsatile flow in-situ cleaning.
Biochemistry

Biochemistry

Journal of Membrane Science & Technology

Author(s): Shamel MM, Sulaiman NM, Sulaiman MZ

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Abstract A study was conducted to evaluate the cross flow tubular ultrafiltration behavior of aqueous solutions of pectin. The effectiveness of pulsatile flow as a cleaning-in-place (CIP) technique to improve permeate flux was undertaken on the above mentioned solution. This investigation is part of a study to apply membrane filtration in the clarification of tropical fruit juice. The main variables, which were investigated, include the concentration of pectin, pulse frequency and amplitude. It was found that the amount of pectin in the solution significantly affects its ultrafiltration behavior. From the observed profiles, it is evident that the formation of gel layer on the membrane surface is responsible for the leveling of flux at high pressures. The presence of pectin was found to affect the properties of the solution such as viscosity, pH and the size of pectin colloid. Improvements in the permeate flux for pectin solution were obtained by employing pulsatile flow cleaning-in-place technique. Both pulse frequency and amplitude are important parameters that can improve the improvement of in-situ cleaning method. Similar to several findings reported in the literature, pulsatile flow showed significant effectiveness of about 60\% higher flux when the ultrafiltration process is operated under laminar condition.
This article was published in Artif Cells Blood Substit Immobil Biotechnol and referenced in Journal of Membrane Science & Technology

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