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用于膜接触器应用中CO吸收和解吸的聚醚酰亚胺中空纤维膜。

Polyetherimide hollow fiber membranes for CO absorption and stripping in membrane contactor application.

作者信息

Naim R, Ismail A F, Matsuura T, Rudaini I A, Abdullah S

机构信息

Faculty of Chemical and Natural Resources Engineering, Universiti Malaysia Pahang Lebuhraya Tun Razak 26300 Kuantan Pahang Malaysia

Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia 81310 Skudai Johor Malaysia

出版信息

RSC Adv. 2018 Jan 17;8(7):3556-3563. doi: 10.1039/c7ra12045a. eCollection 2018 Jan 16.

DOI:10.1039/c7ra12045a
PMID:35542959
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9077760/
Abstract

Porous asymmetric polyetherimide (PEI) hollow fiber membranes with various non-solvent additives, lithium chloride, methanol and phosphoric acid (PA) were prepared for CO absorption and stripping process in a membrane contractor. The PEI membranes were characterized gas permeation, liquid entry pressure of water (LEPw), contact angle and field emission scanning electronic microscopy analysis. The CO absorption and stripping performance was evaluated the membrane contactor system. Addition of non-solvent additives increased the LEPw and membrane porosity of the PEI membrane with the formation of various membrane microstructures and contact angles. Absorption test was performed at 40 °C showed that the PEI-PA membrane produced the highest absorption flux of 2.7 × 10 mol m s at 0.85 m s of liquid velocity. Further testing on PEI-PA membrane was conducted on CO stripping at 60 °C, 70 °C to 80 °C and the results indicated that the stripping flux was lower compared to the absorption flux. Stripping tests at 80 °C produced the highest stripping flux which might due to the increase in equilibrium partial pressure of CO in the liquid absorbent. Modification of PEI membrane incorporation of additive can enhanced the performance of a membrane contactor increasing the absorption and stripping flux.

摘要

制备了带有各种非溶剂添加剂（氯化锂、甲醇和磷酸（PA））的多孔不对称聚醚酰亚胺（PEI）中空纤维膜，用于膜接触器中的CO吸收和解吸过程。通过气体渗透、水的液体进入压力（LEPw）、接触角和场发射扫描电子显微镜分析对PEI膜进行了表征。在膜接触器系统中评估了CO的吸收和解吸性能。添加非溶剂添加剂增加了PEI膜的LEPw和膜孔隙率，并形成了各种膜微观结构和接触角。在40℃下进行的吸收测试表明，在液体流速为0.85m/s时，PEI-PA膜产生的最高吸收通量为2.7×10 mol m s。对PEI-PA膜在60℃、70℃至80℃下进行了CO解吸的进一步测试，结果表明解吸通量低于吸收通量。在80℃下进行的解吸测试产生了最高的解吸通量，这可能是由于液体吸收剂中CO平衡分压的增加。通过添加添加剂对PEI膜进行改性可以通过增加吸收和解吸通量来提高膜接触器的性能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5964/9077760/f3b8ce81c11e/c7ra12045a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5964/9077760/3d76efce9036/c7ra12045a-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5964/9077760/64f0671b5976/c7ra12045a-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5964/9077760/f6c540c61219/c7ra12045a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5964/9077760/f3b8ce81c11e/c7ra12045a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5964/9077760/3d76efce9036/c7ra12045a-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5964/9077760/64f0671b5976/c7ra12045a-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5964/9077760/f6c540c61219/c7ra12045a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5964/9077760/f3b8ce81c11e/c7ra12045a-f4.jpg

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