Open AccessASYMMETRIC CELLULOSE ACETATE MEMBRANES USED IN SEPARATION APPLICATIONS
Author(s) -
Gabriela Ciobanu,
Lidia Favier,
Maria Harja
Publication year - 2021
Publication title -
journal of applied life sciences and environment
Language(s) - English
Resource type - Journals
eISSN - 2784-0379
pISSN - 2784-0360
DOI - 10.46909/journalalse-2021-007
Subject(s) - membrane , cellulose acetate , phase inversion , chemical engineering , sorption , aqueous solution , solvent , polymer , bubble point , chromatography , materials science , cellulose , electrolyte , scanning electron microscope , porosity , synthetic membrane , chemistry , polymer chemistry , bubble , organic chemistry , adsorption , composite material , biochemistry , electrode , parallel computing , computer science , engineering
This work focused on the use of cellulose acetate polymer for the preparation of porous asymmetric membranes using a phase inversion process. These membranes were characterised by scanning electron microscopy, a bubble-point method and sorption measurements. The preparation method used induced membrane anisotropy. The capacity of the membranes in the removal of electrolyte (NaCl) from aqueous solution was investigated. A good retention of 58.6% and a high flux rate of 8.9 × 10–4 m/s using NaCl solution of 200 mg/L concentration were obtained by cellulose acetate membranes prepared with water as non-solvent. The results showed that the membrane performance was affected by the membrane structure, which was determined by the conditions of membrane preparation.