A comparative study on the structure of developed porous PVDF and PEI hollow fiber membrane contactors for CO2 absorption

2015 ◽  
Vol 23 (1) ◽  
Author(s):  
A. Mansourizadeh ◽  
M. H. Jazebizadeh ◽  
M. R. Vaseghi ◽  
A. Aghili
Keyword(s):  
Comparative Study ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Co2 Absorption ◽  
Fiber Membrane ◽  
Membrane Contactors

scholarly journals CO2 Absorption Using Hollow Fiber Membrane Contactors: Introducing pH Swing Absorption (pHSA) to Overcome Purity Limitation

Membranes ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 496
Author(s):  
Sayali Ramdas Chavan ◽  
Patrick Perré ◽  
Victor Pozzobon ◽  
Julien Lemaire
Keyword(s):  
Hollow Fiber ◽  
Recovery Rate ◽  
Hollow Fiber Membrane ◽  
Operating Conditions ◽  
Co2 Removal ◽  
Co2 Absorption ◽  
Fiber Membrane ◽  
Residual Content ◽  
Membrane Contactors ◽  
Ph Swing

Recently, membrane contactors have gained more popularity in the field of CO2 removal; however, achieving high purity and competitive recovery for poor soluble gas (H2, N2, or CH4) remains elusive. Hence, a novel process for CO2 removal from a mixture of gases using hollow fiber membrane contactors is investigated theoretically and experimentally. A theoretical model is constructed to show that the dissolved residual CO2 hinders the capacity of the absorbent when it is regenerated. This model, backed up by experimental investigation, proves that achieving a purity > 99% without consuming excessive chemicals or energy remains challenging in a closed-loop system. As a solution, a novel strategy is proposed: the pH Swing Absorption which consists of manipulating the acido–basic equilibrium of CO2 in the absorption and desorption stages by injecting moderate acid and base amount. It aims at decreasing CO2 residual content in the regenerated absorbent, by converting CO2 into its ionic counterparts (HCO3− or CO32−) before absorption and improving CO2 degassing before desorption. Therefore, this strategy unlocks the theoretical limitation due to equilibrium with CO2 residual content in the absorbent and increases considerably the maximum achievable purity. Results also show the dependency of the performance on operating conditions such as total gas pressure and liquid flowrate. For N2/CO2 mixture, this process achieved a nitrogen purity of 99.97% with a N2 recovery rate of 94.13%. Similarly, for H2/CO2 mixture, a maximum H2 purity of 99.96% and recovery rate of 93.96% was obtained using this process. Moreover, the proposed patented process could potentially reduce energy or chemicals consumption.

CO2 absorption by using PVDF hollow fiber membrane contactors with various membrane structures

2009 ◽  
Vol 69 (2) ◽  
pp. 210-220 ◽  
Author(s):  
Saeid Rajabzadeh ◽  
Shinya Yoshimoto ◽  
Masaaki Teramoto ◽  
M. Al-Marzouqi ◽  
Hideto Matsuyama
Keyword(s):  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Co2 Absorption ◽  
Fiber Membrane ◽  
Membrane Structures ◽  
Membrane Contactors

An experimental study on the stability of PVDF hollow fiber membrane contactors for CO2 absorption with alkanolamine solutions

RSC Advances ◽  
2015 ◽  
Vol 5 (105) ◽  
pp. 86031-86040 ◽  
Author(s):  
M. Sadoogh ◽  
A. Mansourizadeh ◽  
H. Mohammadinik
Keyword(s):  
Experimental Study ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Co2 Absorption ◽  
Fiber Membrane ◽  
The Stability ◽  
Membrane Contactors

The stability of PVDF hollow fiber membrane contactors for CO2 absorption with alkanolamine solutions was investigated.

CO2 Absorption Through Super-hydrophobic Hollow Fiber Membrane Contactors

2016 ◽  
Vol 9 (2) ◽  
pp. 214-219 ◽  
Author(s):  
Sutrasno Kartohardj ◽  
Rexy Darmawan ◽  
Muhammad Fatah Karyadi ◽  
Nelson Saksono
Keyword(s):  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Co2 Absorption ◽  
Fiber Membrane ◽  
Membrane Contactors
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