Characterization of Cellulose Acetate Membrane at Different Thicknesses on Sucrose Concentration by Forward Osmosis

Forward osmosis (FO) requires a specific membrane structure for applications like juice concentration. The phase inversion method was used to make cellulose acetate (CA) FO membranes. solvents were acetone and 1,4-dioxane. Additives included polyvinylpyrrolidone (PVP), methanol, maleic acid in the preparation of CA membrane, which it easier improve membrane's permeability. performance fabricated their morphology evaluaed with different casting thicknesses 150, 200, 250 µm. Experiment works begins an hour flux testing, deionized water as feed solution 1 M NaCl draw solution. then concentrate 0.5 sucrose 240 minutes (2 M). Contact angle, porosity, scanning electron miscroscopy (SEM) characterize properties morphology. High (2.25 L/m2hr) high porosity (75.86%) found at 200 µm thickness. Water permeability concentration thickness had highest (2.39 L/m2hr). results also show that values vary All membranes hydrophilic contact angles below 90°. A produces smooth evenly distributed pores, according analysis. Structural parameter (S) proportional relationship thickness, thinner potentially reduces internal polarization (ICP).