Development Cellulose Acetate /Polysulfone Membrane for Desalination Application

The work consists of preparing organic polymer membranes based on polysulfone (PSf) and cellulose acetate (AC) PSf / AC using the phase inversion technique induced by coagulation in a NIPS water bath followed by a heat treatment in an oven for 15 min at 90 ° C. Polyethylene glycol PEG was used as an additive and DMF as a solvent. It has been shown that the membrane manufacturing parameters such as the thermal annealing treatment, the level of PEG, the PSf / PEG ratio in the casting solution, have considerably influenced their structure and consequently their efficiency and performance. The retention of monovalents salts was studied, the obtained results were satisfied for Mg and Ca salts which is in accordance with WHO standards.The NaCl salt retention reaches the maximum peak of 50% for the membrane in pure cellulose acetate.