Mantel: Carbon Capture Technology to Reduce the World’s Atmospheric CO2

Mantel, the developer of a novel solution to carbon capture, announced a $2 million investment led by The Engine, the venture firm spun out of MIT that invests in early-stage Tough Tech companies. New Climate Ventures also participated in the seed round. Mantel’s solution is the first high-temperature, liquid-phase carbon capture system. Designed to operate at the high temperatures found inside boilers, kilns, and furnaces, this approach is inherently efficient and therefore lower cost. This funding will accelerate Mantel’s technology development, prototype testing, and initial deployment. Additionally, the expansion of carbon capture tax credits in the new Infrastructure Reduction Act greatly enhances the opportunity for Mantel.

Mantel’s molten salts selectively absorb CO2 and regenerate a pure stream of CO2 that can be either stored or utilized. By uniquely combining liquid phase materials with high operating temperatures this approach can reduce energy losses by more than 60%, and cut costs in half. “There is a thermodynamic benefit to carrying out a separation process at high temperatures and addressing the thermodynamics is the only way to significantly decrease the cost of carbon capture,” said Cameron Halliday, co-founder, and CEO of Mantel. “By using liquid phase chemistry we can overcome the challenges holding back existing high-temperature approaches, enabling carbon capture’s critical role in the energy transition.”

Mantel is building a platform of solutions to reduce emissions in hard-to-abate industries such as industrial heat, cement, steel, and hydrogen. It is also applicable for hard-to-abate geographies where energy derived from coal, and natural gas is likely to remain prevalent for decades. Additionally, the technology can be utilized for carbon dioxide removal from the atmosphere through pairing with biogenic sources of emissions, such as bioenergy, waste-to-energy, and pulp & paper. Because organic material draws carbon from the atmosphere as it grows and the captured emissions are permanently stored underground in geological formations.

According to the International Energy Agency (IEA), to reach net zero over 10 billion tonnes of carbon dioxide will need to be captured per year by 2070, which implies a global market measured in the hundreds of billions of dollars. “Carbon capture is required to meet the world’s climate goals and lower cost solutions are absolutely essential for countries and companies to meet net zero emissions targets,” said Michael Kearney, Partner at The Engine, and newly-appointed board member of Mantel. “In order to drive decarbonization across strategic energy-intensive industries, low-cost carbon capture is a critical need, and Mantel’s system has the potential to significantly decrease the cost of carbon capture. Net zero emissions can be a cost-efficient, achievable reality.”

Founded in 2022 by Cameron Halliday, CEO, Danielle Colson, COO, and Sean Robertson, CTO, Mantel was spun out of MIT and research completed with Professors T. Alan Hatton and Takuya Harada. After the lab-scale flow loop demonstration is achieved, the company plans to use the fresh capital to build a commercial-scale demonstration plant.

About Mantel

Mantel is developing the first molten-salt-based carbon capture technology. Our materials are designed to operate at the high temperatures found inside boilers, kilns, and furnaces – enabling highly efficient carbon capture that has not been possible until now. Carbon capture can be applied across the industry to reduce emissions – and even achieve net-negative emissions. By solving for efficiency Mantel can reduce energy losses by more than 60% and cut costs in half, unlocking carbon capture’s role in reaching global net zero. To learn more, go to: https://www.mantelcapture.com/

About The Engine

The Engine spun out of MIT, invests in early-stage companies solving the world’s biggest problems through a convergence of breakthrough science, engineering, and leadership. We accelerate the path to market for Tough Tech companies through the combination of capital, infrastructure, and network. The Engine is headquartered in Cambridge, MA. For more information, visit www.engine.xyz.