CO2 absorption into aqueous ammonia using membrane contactors: Role of solvent chemistry and pore size on solids formation for low energy solvent regeneration

Bavarella, Salvatore; Luqmani, B.; Thomas, Navya; Brookes, Adam; Moore, Adam D.; Vale, Peter; Pidou, Marc; McAdam, Ewan J.

doi:10.1016/j.seppur.2022.120786

Cited by 9 publications

(3 citation statements)

References 41 publications

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“…As a result, the falling liquid-film approach offers the benefits of a high gas–liquid contact area while eliminating mass transfer resistance in the pores, making it an attractive alternative to hydrophobic pore-based membrane absorption 28 , 29 . Ceramic membranes have excellent mechanical strength, chemical stability, and thermal stability, making them resistant to corrosive amine solutions used for CO 2 absorption 21 , 30 – 32 . Overall, ceramic membranes are well-suited for the falling liquid-film CO 2 absorption process involving aqueous amine solutions 33 – 36 .…”

Section: Introductionmentioning

confidence: 99%

Efficient CO2 absorption through wet and falling film membrane contactors: insights from modeling and simulation

Ghasem

2023

Sci Rep

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The release of excessive carbon dioxide (CO2) into the atmosphere poses potential threats to the well-being of various species on Earth as it contributes to global working. Therefore, it is necessary to implement appropriate actions to moderate CO2 emissions. A hollow fiber membrane contactor is an emerging technology that combines the advantages of separation processes and chemical absorptions. This study investigates the efficacy of wet and falling film membrane contactors (FFMC) in enhancing CO2 absorption in a monoethanolamine (MEA) aqueous solution. By analyzing factors such as membrane surface area, gas flow rate, liquid inlet flow rates, gas–liquid contact time, and solvent loading, we examine the CO2 absorption process in both contactors. Our results reveal a clear advantage of FFMC, achieving an impressive 85% CO2 removal efficiency compared to 60% with wet membranes. We employ COMSOL Multiphysics 6.1 simulation software and finite element analysis to validate our findings, demonstrating a close agreement between predicted and experimental values, with an average relative error of approximately 4.3%. These findings highlight the significant promise of FFMC for applications in CO2 capture.

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Section: Introductionmentioning

confidence: 99%

Efficient CO2 absorption through wet and falling film membrane contactors: insights from modeling and simulation

Ghasem

2023

Sci Rep

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“…Ceramic membranes, typically made of metal oxides such as alumina, zirconia, and silica, are hydrophilic and have hydroxyl groups on their surface. They have excellent mechanical strength, chemical stability, and thermal stability, making them resistant to corrosive amine solutions used for CO 2 absorption [25][26][27][28] . Ceramic membranes are often designed with an asymmetric structure to provide high ux and selectivity.…”

Section: Introductionmentioning

confidence: 99%

Efficient CO 2 Absorption through Wet Membrane Falling Film Contactors: Insights from Modeling and Simulation

Ghasem

2023

Preprint

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This study investigates the use of wet membrane falling liquid film contactors to enhance the absorption of carbon dioxide (CO2) in a monoethanolamine (MEA) aqueous solution. Simulation and modeling analysis were performed to assess the effectiveness of the contactors in capturing CO2. The study analyzed the membrane surface area, flow rates, gas-liquid contact time, and solvent loading to investigate the CO2 absorption process in a falling film membrane contactor (FFMC). The results show that using FFMC significantly increases the CO2 capture rate compared to wet membranes. The study provides valuable insights into the use of contactors for CO2 capture and can serve as a basis for further research in this field. The study employed the finite element analysis method-based COMSOL Multiphysics 6.1 simulation software to conduct a numerical simulation of the CO2 mass transfer process in the FFMC system. The simulation model's accuracy was tested by comparing the simulated CO2 absorption efficiency and flux values in the MEA solution with experimental data. The results showed a favorable agreement between the predicted and experimental values, with an average relative error of approximately 4.3%. These findings suggest that the falling film membrane contactor approach holds significant potential for commercial applications in CO2 capture.

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“…It is becoming more and more crucial to research carbon dioxide (CO2 ) capture and storage to lessen greenhouse gas emissions and mitigate the consequences of climate change 1,2,3,4,5,6 . The usage of hollow fiber membrane conductors, which successfully remove CO2 from gas streams by combining the advantages of chemical desorption and membrane separation, is one viable CO2 capture technique 4,7,8,9,10 .…”

Section: Introductionmentioning

confidence: 99%

Development and evaluation of a hollow fiber membrane contactor for carbon dioxide capture

Ghasem,

Al-Marzouqi

2023

International Conference on Mathematical and Statistical Physics, Computational Science, Education and Communication (ICMSCE 20

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CO2 absorption into aqueous ammonia using membrane contactors: Role of solvent chemistry and pore size on solids formation for low energy solvent regeneration

Cited by 9 publications

References 41 publications

Efficient CO2 absorption through wet and falling film membrane contactors: insights from modeling and simulation

Efficient CO2 absorption through wet and falling film membrane contactors: insights from modeling and simulation

Efficient CO 2 Absorption through Wet Membrane Falling Film Contactors: Insights from Modeling and Simulation

Development and evaluation of a hollow fiber membrane contactor for carbon dioxide capture

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