Quaternary Functionalized Cellulose-based Biopolymer for Anion Exchange Membrane Fabrication

Document Type : Original Article

Authors

1 Petroleum Applications Department, Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt

2 Department of Petroleum Applications, Egyptian Petroleum Research Institute (EPRI)

3 Process design and Development Department, Egyptian Petroleum Research Institute (EPRI), Egypt

4 Water Pollution Research Department, National Research Centre, Dokki, Cairo 12311, Egypt

5 Department of Civil, Construction & Environmental Engineering, University of New Mexico, Albuquerque, NM 87131-0001, USA

Abstract

In this work, we introduce a new method for preparing an enhanced anion exchange membrane (AEM) based on biopolymer (cellulose) for water treatment. The preparation and fabrication of AEM were performed by chlorinating cellulose powder to prepare chlorodeoxycellulose (CDC) and then quaternizing CDC with dimethyl amine to prepare quaternized dimethylamine cellulose (QDC). The quaternized polymeric material was used to fabricate the exchange membrane. Membrane porosity was controlled by incorporating polyethylene glycol as a pore former with different ratios using the phase inversion technique. The performance of the fabricated AEM was fully investigated by studying the relationship between the pore former content and the pore characteristics, including porosity, water uptake, swelling ratio, and ion exchange capacity. The microstructure and morphology of the membrane were also examined and discussed.

Keywords

Main Subjects