The Optimization and production polyethersulfone ultra filtration flat sheet membranes using lithium chloride as additives

The polyethersulfone Ultra filtration flat sheet membranes are prepared by phase inversion process using PES as polymeric materials and DMF as solvent and lithium chloride as an additives. The additives lithium chloride concentration is varied from 1-5wt% in casting solution. The effect of lithium chloride concentration on performance of the membranes is evaluated in terms of percentage solute rejection and molecular weight cut off of the membrane, at 2wt% lithium chloride concentration, membranes found lower molecular weight cut off, after increased in concentration of lithium chloride beyond 2wt%, molecular weight cut off of the membranes increased. The minimum molecular weight cut off found at 2wt%lithium chloride concentration.