Journal article · Conference paper
Enzymatically Assisted CO2 Removal from Flue-Gas
Department of Chemical and Biochemical Engineering, Technical University of Denmark1
CAPEC-PROCESS, Department of Chemical and Biochemical Engineering, Technical University of Denmark2
Center for Energy Resources Engineering, Centers, Technical University of Denmark3
CERE – Center for Energy Ressources Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark4
The enzyme carbonic anhydrase is an enzyme known to enhance CO2 absorption rates. However, for economic viability in enzyme based absorption technology long term stability under process relevant conditions is needed. Thus, here enzyme stability for extended times are investigated with respect to pH, temperature and solvent.
Temperatures and pH stability were tested for up to 100 hours incubation and the enzyme was temperature stable up to 60 °C and in the pH range from 7 to 11, with some residual activity between pH 5 and 12. Furthermore, enzyme stability was tested for 7 different capture solvents for 150 days, at 1 M or 3 M solvent concentrations, 40 °C and pH between 8-9 and 10.
Residual activity was found with all samples ranging from 12 to 91 % of the initial activity. This study show that this enzyme can indeed be used for extended periods in process relevant conditions, and thus shows promise for industrial implementation as a catalyst in carbon capture.
| Language: | English |
|---|---|
| Year: | 2014 |
| Pages: | 624-632 |
| Proceedings: | 12th International Conference on Greenhouse Gas Technologies (GHGT-12) |
| ISSN: | 18766102 |
| Types: | Journal article and Conference paper |
| DOI: | 10.1016/j.egypro.2014.11.067 |
| ORCIDs: | Gundersen, Maria T. , von Solms, Nicolas and Woodley, John |
