Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia.
J Hazard Mater. 2013 Apr 15;250-251:354-61. doi: 10.1016/j.jhazmat.2013.01.083. Epub 2013 Feb 14.
A series of polyetherimide (PEI) hollow fiber membranes with various polymer concentrations (13-16 wt.%) for CO2 stripping process in membrane contactor application was fabricated via wet phase inversion method. The PEI membranes were characterized in terms of liquid entry pressure, contact angle, gas permeation and morphology analysis. CO2 stripping performance was investigated via membrane contactor system in a stainless steel module with aqueous diethanolamine as liquid absorbent. The hollow fiber membranes showed decreasing patterns in gas permeation, contact angle, mean pore size and effective surface porosity with increasing polymer concentration. On the contrary, wetting pressure of PEI membranes has enhanced significantly with polymer concentration. Various polymer concentrations have different effects on the CO2 stripping flux in which membrane with 14 wt.% polymer concentration showed the highest stripping flux of 2.7 × 10(-2)mol/m(2)s. From the performance comparison with other commercial membrane, it is anticipated that the PEI membrane has a good prospect in CO2 stripping via membrane contactor.
采用湿法相转化法制备了一系列不同聚合物浓度（13-16wt.%）的聚醚酰亚胺（PEI）中空纤维膜，用于膜接触器中的 CO2 汽提过程。通过膜接触器系统，以水合二乙醇胺为液体吸收剂，在不锈钢模块中对 PEI 膜进行了 CO2 汽提性能研究。中空纤维膜的气体渗透、接触角、平均孔径和有效表面孔隙率随聚合物浓度的增加而呈下降趋势。相反，PEI 膜的润湿压力随聚合物浓度的增加而显著提高。不同聚合物浓度对 CO2 汽提通量有不同的影响，其中聚合物浓度为 14wt.%的膜显示出最高的汽提通量 2.7×10(-2)mol/m(2)s。通过与其他商业膜的性能比较，可以预计在膜接触器中 PEI 膜在 CO2 汽提方面有很好的应用前景。
