“…The point at which the absorption flux reaches a plateau depends on the specific absorption process and the properties of the absorbent solution. It is essential to optimize the liquid flow rate to achieve the highest possible absorption efficiency without exceeding the point where the absorption flux plateaus 52 . Figure 6 Effect of solvent feed rate on the absorption removal efficiency and removal flux of carbon dioxide from an inert gas (10% CO 2 /N 2 ) in a falling film membrane contactor.…”
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.
“…The point at which the absorption flux reaches a plateau depends on the specific absorption process and the properties of the absorbent solution. It is essential to optimize the liquid flow rate to achieve the highest possible absorption efficiency without exceeding the point where the absorption flux plateaus 52 . Figure 6 Effect of solvent feed rate on the absorption removal efficiency and removal flux of carbon dioxide from an inert gas (10% CO 2 /N 2 ) in a falling film membrane contactor.…”
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.
“…The point at which the absorption ux reaches a plateau depends on the speci c absorption process and the properties of the absorbent solution. It is essential to optimize the liquid ow rate to achieve the highest possible absorption e ciency without exceeding the point where the absorption ux plateaus 45 .…”
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.
“…7 , 73 , 77 Operating cost is influenced by several internal and external factors, including working phase and character of heat transfer medium, operating pressure, price of fuels, and so on. 45 , 78 , 79 The average is adopted for the base case. So is the transport and storage cost.…”
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