Modeling permeate flux in ultrafiltration of non-Newtonian polysaccharide solutions

• Main Author: Almendrala, Michelle C.
• Format: text
• Published: Animo Repository 2024
• Subjects: Ultrafiltration; Non-Newtonian fluids; Chemical Engineering
• Online Access: https://animorepository.dlsu.edu.ph/faculty_research/12328
• Institution: De La Salle University

The development of mathematical models for permeate flux behavior of non-Newtonian polysaccharide solutions in ultrafiltration has been studied. The gel polarization model was modified to express the permeate flux as function of the operating parameters. The modified gel model integrating the average wall shear stress per unit length of the membrane (Yw/L) has been proposed to predict permeate flux. Two correlation equations based on the modified gel polarization model were also developed to express the dependence of the resulting permeate flux on the properties of the solution and operational variables. These correlations were able to predict the permeate flux behavior on the assumptions made for the constant and variable gel layer concentrations. An empirical model was also developed incorporating the factors affecting flux. The predicted results based from the mathematical models were similar and found to be in good agreement with the experimental data.