The effect of membrane pores wettability on CO2 removal from CO2/CH4 gaseous mixture using NaOH, MEA and TEA liquid absorbents in hollow fiber membrane contactor

Ali Taghvaie Nakhjiri; Amir Heydarinasab; Omid Bakhtiari; Toraj Mohammadi

doi:10.1016/j.cjche.2017.12.012

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The effect of membrane pores wettability on CO₂ removal from CO₂/CH₄ gaseous mixture using NaOH, MEA and TEA liquid absorbents in hollow fiber membrane contactor

Separation Science and Engineering | Updated：2026-01-06

- The effect of membrane pores wettability on CO₂ removal from CO₂/CH₄ gaseous mixture using NaOH, MEA and TEA liquid absorbents in hollow fiber membrane contactor
- The effect of membrane pores wettability on CO₂ removal from CO₂/CH₄ gaseous mixture using NaOH, MEA and TEA liquid absorbents in hollow fiber membrane contactor
- 中国化学工程学报（英文版） 2018年26卷第9期页码：1845-1861
- Affiliations：
  
  1. 2 Membrane Research Center, Faculty of Chemical and Petroleum Engineering, Razi University, Kermanshah,Iran
  2. 3 Research Center for Membrane Separation Processes, Faculty of Chemical Engineering, Iran University of Science and Technology(IUST), Narmak, Tehran,Iran
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2017.12.012
  中图分类号：
- 纸质出版：2018
- Accepted：
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Ali Taghvaie Nakhjiri, Amir Heydarinasab, Omid Bakhtiari, 等. The effect of membrane pores wettability on CO₂ removal from CO₂/CH₄ gaseous mixture using NaOH, MEA and TEA liquid absorbents in hollow fiber membrane contactor[J]. 中国化学工程学报（英文版）, 2018,26(9):1845-1861. DOI: 10.1016/j.cjche.2017.12.012.

removal from CO
Ali Taghvaie Nakhjiri, Amir Heydarinasab, Omid Bakhtiari, 等. The effect of membrane pores wettability on CO₂ removal from CO₂/CH₄ gaseous mixture using NaOH, MEA and TEA liquid absorbents in hollow fiber membrane contactor[J]. 中国化学工程学报（英文版）, 2018,26(9):1845-1861. DOI: 10.1016/j.cjche.2017.12.012. DOI：

removal from CO DOI： 10.1016/j.cjche.2017.12.012.

摘要

Abstract

The present paper renders a modeling and a 2D numerical simulation for the removal of CO

from CO

/CH

gaseous stream utilizing sodium hydroxide (NaOH)

monoethanolamine (MEA) and triethanolamine (TEA) liquid absorbents inside the hollow fiber membrane contactor. Counter-current arrangement of absorbing agents and CO

/CH

gaseous mixture flows are implemented in the modeling and numerical simulation. Non-wetting and partial wetting modes of operation are considered where in the partial wetting mode

/CH

gaseous mixture and liquid absorbents fill the membrane pores. The deteriorated removal of CO

in the partial wetting mode of operation is mainly due to the mass transfer resistance imposed by the liquid in the pores of membrane. The validation of numerical simulation is done based on the comparison of simulation results of CO

removal using NaOH and experimental data under non-wetting mode of operation. The comparison illustrates a desirable agreement with an average deviation of less than 5%. A

ccording to the results

MEA provides higher efficiency for CO

removal in comparison with the other liquid absorbents. The order for CO

removal performance is MEA NaOH TEA. The influence of non-wetting and partial wetting modes of operation on CO

removal are evaluated in this article as one of the novelties. Besides

the percentage of CO

sequestration as a function of gas velocity for various percentages of membrane pores wetting ranging from 0 (non-wetting mode of operation) to 100% (complete wetting mode of operation) is studied in this research paper

which can be proposed as the other novelty. The results indicate that increase in some operational parameters such as module length

membrane porosity and absorbents concentration encourage the removal percentage of CO

from CO

/CH

gaseous mixture while increasing in membrane tortuosity

gas velocity and initial CO

concentration has unfavorable influence on the separation efficiency of CO

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