Improvement of CO2/N2 separation performance by polymer matrix cellulose acetate butyrate

29th Symposium of Malaysian Chemical Engineers 2016

Lee, R.J.^1 ; Jawad, Z.A.^1 ; Ahmad, A.L.^2 ; Ngo, J.Q.^1 ; Chua, H.B.^1

School of Engineering and Science, Department of Chemical Engineering, Curtin University Sarawak Malaysia, CDT 250, Sarawak, Miri

98009, Malaysia^1

School of Chemical Engineering, Engineering Campus, Universities Sains Malaysia, Nibong Tebal Penang

14300, Malaysia^2

关键词: Cellulose acetate butyrates;    Economic advantages;    Film-forming properties;    Gas permeation measurements;    Polymer composition;    Scanning electron micrographs;    Separation performance;    Wet-phase inversion methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/206/1/012072/pdf
DOI  :  10.1088/1757-899X/206/1/012072

来源: IOP

【 摘 要 】

With the rapid development of modern civilization, carbon dioxide (CO2) is produced in large quantities and mainly generated from industrial sectors. The gas emission is the major contributor to global warming. To address this issue, the membrane technology is implemented for the CO2removal, due to the energy efficiency and economic advantages presented. Cellulose acetate butyrate (CAB) is selected as the polymeric material, due to the excellent film-forming properties and capable of developing a defect-free layer of neat membrane. This study described the fabrication development of CAB using a wet phase inversion method with different casting conditions. Where the composition of the casting solutions (3-5 wt %) and solvent evaporation time (4-6 min) were determined. The outcomes of these dominant parameters were then used to determine the best CAB membrane for CO2/Nitrogen (N2) separation and supported by the characterization i.e. scanning electron micrograph. Gas permeation measurements showed satisfactory performance for CAB membrane fabricated with 5 min evaporation time and 4 wt% polymer composition (M2). Where, its permeance and selectivity are 120.19 GPU and 3.17, respectively. In summary, this study showed a brief outlined of the future direction and perspective of CAB membrane for CO2/N2separation.