| 2022-VELA-69834 | |
| Researchers at Purdue University have developed a system to capture CO2 from the air and use it to make calcium carbonate for cement or other applications. Large-scale carbon capture technologies are needed to slow climate change and ocean acidification and prevent global warming above 2.0 degrees Celsius. The Purdue researchers' technology uses a wind turbine to capture CO2 and provide the energy to a liquid filter system that absorbs CO2 by injecting polluted air from point sources or other air with concentrated CO2 into a water-calcium hydroxide solution. The carbon dioxide reacts with the calcium hydroxide, forming calcium carbonate, which can be used for concrete production, among other applications. This technology could have a large impact on "closing the loop" in concrete production, which accounts for 8% of global CO2 emissions. The researchers have also proposed installing the filtration component of the system in the exhaust of vehicles, which will capture concentrated CO2 streams. Technology Validation: In a simulation, the energy transmission of the wind turbine was 78% efficient. The production of the prototype of liquid filter assembled with wind turbine system is ongoing. Advantages: - Reduces atmospheric CO2 concentration - Traps other pollutants like NOx - Slows climate change and ocean acidification - Allows reuse of wastewater with high pH from different industries, including the corn processing industry - Reduces demand for wastewater treatment Applications: - CO2 removal from the atmosphere - Concrete production with reduced abiotic depletion - CO2 removal from transport exhausts and from industries’ point of CO2 emissions |
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May 19, 2022
Provisional-Patent
United States
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Purdue Office of Technology Commercialization The Convergence Center 101 Foundry Drive, Suite 2500 West Lafayette, IN 47906 Phone: (765) 588-3475 Fax: (765) 463-3486 Email: otcip@prf.org |
