Cellulose acetate of rice husk blend membranes: Preparation, morphology and application

Abstract

Cellulose acetate blend membranes in this study was synthesized from cellulose acetate (CA) of rice husk and NaA zeolites (Z) with N,N’-Methylene bis acrylamide (MBA) as the cross-linker agent and gamma-rays from cobalt-60 source as the reaction initiator. Application of the membrane was carried out to increase the concentration of vetiverol in vetiver oil. The steps in this study were isolation of the cellulose rice husk with alkali treatment, delignification, acetylation, preparation of the cellulose acetate-NaA zeolites NaA-membrane by inverse phase technique, addition of N,N’-Methylene bis acrylamide, and irradiation by gamma-rays. Swelling degree, crosslinking yield, tensile strength, membrane performance, FTIR, and SEM analysis were observed. The results showed that the optimal irradiation dose for the synthesis the CA-Z-MBA membrane was 20 kGy. The CA-Z-MBA membrane had a swelling degree of 4.44%, tensile strength of 656.40 kg/cm2, and crosslinking yield of 6.61%. Performance of the CA-Z-MBA membrane reached the flux of 60.58 g/m2.h, permeate concentration (CP) of 11.67%, and the CP increase 5 times from 2.40% to 11.67%.