The incorporation of graphene oxide into polysulfone mixed matrix membrane for CO2/CH4 separation

International Conference on Chemical and Bioprocess Engineering

地球科学;化学;生物科学

Zahri, K.^1 ; Goh, P.S.^1 ; Ismail, A.F.^1

Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Skudai, Johor Darul Ta'zim

81310, Malaysia^1

关键词: Energy content;    Ideal selectivities;    Membrane properties;    Mixed matrix membranes;    Nanosheet structure;    Pristine membranes;    Separation performance;    Small molecules;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/36/1/012007/pdf
DOI  :  10.1088/1755-1315/36/1/012007

学科分类：生物科学（综合）

来源: IOP

【 摘 要 】

Carbon dioxide (CO2) is often found as the main impurity in natural gas, where methane (CH4) is the major component. The presence of CO2in natural gas leads to several problems such as reducing the energy content of natural gas and cause pipeline corrosion. Thus it must be removed to meet specifications (CO2≤ 2 mol%) before the gas can be delivered to the pipeline. In this work, hollow fiber mixed matrix membrane (MMM) were fabricated by embedding graphene oxide (GO) into a polysulfone (PSf) polymer matrix to improve membrane properties as well as its separation performance towards CO2/CH4gas. The membrane properties were investigated for pristine membrane and mixed matrix membrane filled with filler loading of 0.25%. The synthesized GO and properties of fabricated membranes were characterized and studied using TEM, AFM, XRD, FTIR and SEM respectively. The permeance of pure gases and ideal selectivity of CO2/CH4gas were determined using pure gas permeation experiment. GO has affinity towards CO2gas. The nanosheet structure creates path for small molecule gas and restricted large molecule gas to pass through the membrane. The incorporation of GO in PSf polymer enhanced the permeance of CO2and CO2/CH4separation from 64.47 to 86.80 GPU and from 19 to 25 respectively.