Biopolymers as a promising platform for biocatalyst immobilization in novel gas-liquid membrane contactor for carbon capture
(2021) Euromembrane 2021 — Location: Copenhagen, Denmark (28.November.2021)
Files
HartantoYusak-EuromembraneAbstract202138.pdf
Closed Access - Adobe PDF
- 152.77 KB
Details
- Authors
Hartanto, Yusak 
- Abstract
- Post-combustion carbon capture using membrane-based processes represents one of the potential technologies to mitigate the release of the greenhouse gases to the atmospheric. Gas-liquid membrane contactor (GLMC) utilizing porous hydrophobic membrane as a physical barrier to separate gaseous feed and liquid absorbent streams has a clear major advantage, i.e., excellent selectivity and lower energy requirement, over pressure-driven membrane gas separation at very low CO2 concentration. However, conventional GLMC suffers several major drawbacks, such as membrane wetting, toxic amine solvents and energy-intensive CO2 desorption process. Recently, more benign solvents, such as sodium carbonate (Na2CO3), have been used in place of amines to perform CO2 capture in GLMC. The slower absorption kinetics of these solvents, unfortunately, are not able to compete with the performance of conventional amines. Incorporating biocatalysts that promote CO2 hydration could accelerate the CO2 capture rate of these solvents. In this work, we prepared novel biocatalytic membranes using biopolymer coating as an immobilization platform. The coating concentration, membrane coating method, immobilization parameters and process conditions were varied. The membrane was evaluated in an open-loop gaseous feed and a circulated liquid absorbent solution. Our work demonstrated that the membrane with the immobilized biocatalyst had a significant increase in the overall mass transfer coefficient: an increase of ~650% compared to pristine membranes. The membrane was also tested several times and showed no sign of performance deterioration. In conclusion, our results clearly highlighted the impressive performance of novel biopolymer-coated membranes as a platform for biocatalysts immobilization in CO2 capture process.
- Affiliations
Citations
Hartanto, Y., Hannart, B., Molina Fernandez, C., Xu, X., & Luis Alconero, P. (2021). Biopolymers as a promising platform for biocatalyst immobilization in novel gas-liquid membrane contactor for carbon capture. Euromembrane 2021, Copenhagen, Denmark.