Northwestern to lead Midwestern carbon-capture hub

MINDAC’s co-principal investigators are: Ted Sargent, the Lynn Hopton Davis and Greg Davis Professor of Chemistry at Northwestern’s Weinberg College of Arts and Sciences, a professor of electrical and computer engineering at McCormick and co-executive director of the Trienens Institute; Omar Farha, the Charles E. and Emma H. Morrison Professor of Chemistry at Weinberg; and Brad Sageman, a professor of Earth and planetary sciences at Weinberg and co-director of the Trienens Institute. Mar Reguant, a professor of economics at Weinberg, will serve as a senior adviser. Ke Xie, a research assistant professor in Sargent’s laboratory, will serve as the Hub’s project manager.

“This initiative will make an important contribution as we develop solutions to tackle the global challenge of climate change,” Sargent said. “The issue requires diverse solutions — ones that can be used in combination with one another — and this includes direct air capture. As one of the world’s leading universities in engineering, materials science, chemistry and the social sciences, Northwestern will bring unparalleled expertise to this vital initiative.”

From intensifying storms to declining biodiversity to rising sea levels, the tragic effects of worsening climate change are becoming more visible each year. According to the United Nations, emissions need to decrease by 45% by 2030 in order to limit climate change to 1.5 degrees Celsius. Simply decreasing the volume of emissions is not enough. To hit this critical target, scientists estimate that billions of tons of CO2 also must be removed from the atmosphere.

DAC technologies can reduce this lingering legacy CO2 by literally pulling it out of the air. The CO2 then can be safely and permanently stored deep underground or upcycled into valuable products, contributing to a circular carbon economy.

“The Illinois Basin has a number of deep rock formations with favorable properties for CO2 storage,” Sageman said. “And successful CO₂ sequestration already has been demonstrated in the basin.”

For multiple reasons, the Midwest is uniquely positioned as an ideal location for a DAC Hub. Home to industry and high-traffic roadways, the Midwest region is a large emitter of CO2 in the United States. As a consequence of climate change, the region is subject to extreme temperature and precipitation fluctuations — with cold air masses from the far north converging with warm, humid air masses from the Gulf of Mexico.

According to the U.S. Energy Information Administration, Illinois also has the most nuclear power of any state in the nation, making nuclear energy an attractive and reliable zero-carbon energy source to power the capture process. Nuclear energy facilities also produce abundant waste heat, which can be integrated into capture facilities to further reduce energy costs.

“Incorporating carbon dioxide captured from air into building materials or plastics can sequester carbon,” Dunn said. “Alternatively, processes can convert captured carbon dioxide into fuels that can replace energy from fossil fuels. When the processes that capture carbon dioxide use nuclear power, the potential for carbon neutral or carbon negative products and fuels arises, which is very exciting.”