CO2 Solutions Inc. (TSX-V: CST) on April 29 presented the full results of the pilot testing of CO2 Solutions’ carbon capture process, completed in January 2015, at the Fourteenth Annual Conference on Carbon Capture, Utilization & Sequestration in Pittsburgh, Pennsylvania.
The presentation was made by Dr. Louis Fradette, CO2 Solutions’ Senior Vice-President, Process Engineering & Chief Technology Officer. The company said that detailed results presented establish CO2 Solutions’ technology as a new economic benchmark for low-cost carbon capture. Highlights of the results include:
- A conservative cost estimate of approximately $39 per tonne of CO2 based on 90% CO2 capture from flue gases of a typical coal-fired power plant at full scale, including CO2 compression to 2250 psi. This surpasses the U.S. Department of Energy (DOE) target of $40/tonne by the year 2025 for new carbon capture processes, the company said.
- Approximately ten-times reduction in the parasitic load on the power plant through the use of low-grade, nil value heat from outside of the power plant’s steam cycle compared to the reference amine case.
- Stable performance of CO2 Solutions’ proprietary 1T1 enzyme over the test period with no enzyme replacement.
- Constant CO2 capture performance over the test period with no solvent make up and no toxic waste products generated.
- Significantly reduced power plant retrofit costs as the use of low-grade heat greatly reduces the requirement for additional coal combustion to maintain the net output of the power plant.
“These results validate our work to date in proving our technology to have significant cost advantages over other solutions, enabling the efficient reduction and reuse of CO2 emissions from power generation and other industries.” said Fradette. “With these excellent results and our larger scale demonstration coming on line in the coming weeks we are well positioned for the commercialization of our technology later this year.”
The results were based on testing of CO2 Solutions’ enzyme-accelerated process, applied to flue gas from natural gas and coal combustion at a scale of approximately 1 tonne-CO2/day. Using CO2 Solutions’ proprietary high-performance 1T1 enzyme, the programme represented the largest scale test to date of an enzyme-based CO2 capture process. It was also the first enzyme-based CO2 capture demonstration involving a complete configuration representative of industrial capture with flue gases, incorporating reduced pressure stripping and the enzyme employed in both absorption and stripping.
CO2 Solutions bills itself as an innovator in the field of enzyme-enabled carbon capture and has been actively working to develop and commercialize the technology for stationary sources of carbon pollution. CO2 Solutions has built an extensive patent portfolio covering the use of carbonic anhydrase, or analogues thereof, for the efficient post-combustion capture of carbon dioxide with lowenergy aqueous solvents.