CarbonCure consortium closes the carbon loop for the cement and concrete industries

Waste CO2 is captured from Argos’ cement plant using SES’ CCC technology. Image: CarbonCure Technologies

NRG COSIA Carbon XPRIZE contestant CarbonCure Technologies said it has led a team of five companies to demonstrate the world’s first integrated CO2 capture and utilization (CCU) from cement for concrete production.

The project built upon previous cement plant CO2 capture demonstrations and was the first project to collect cement kiln CO2 for subsequent utilization downstream in concrete production and construction.

CO2 emissions from the Cementos Argos’ Roberta cement plant near Calera, Alabama, were captured by Sustainable Energy Solutions’ (SES) cryogenic CO2 capture technology, transported by Praxair, Inc. and reused in Argos' Glenwood (Atlanta) concrete operations equipped with CarbonCure's CO2 utilization technology.

The concrete manufactured with the waste CO2 from the Argos Roberta cement plant was then used in a local construction project in the greater Atlanta area.

Design partners and fellow members of CarbonCure’s Carbon XPRIZE team, such as LS3P Architects, Uzun + Case Structural Engineering and Walter P. Moore Structural Engineers, complete the end to end integrated solution by creating demand for CarbonCure concrete products in the marketplace.

Kline Consulting LLC oversaw the commissioning and reporting of the industrial demonstration.

The project was an extension of Team CarbonCure's participation in the $20 million NRG COSIA Carbon XPRIZE Challenge, which incentivizes and accelerates the development of integrated CCU technologies and new markets that convert CO2 emissions from coal and natural gas power generation into valuable products.

Team CarbonCure took the additional step of demonstrating the potential of its CCU technologies using CO2 emissions from the cement sector considering that cement production is responsible for five per cent of global CO2 emissions and is expected to be both the earliest and largest market for CCU technologies.

The consortium believes the project is important to the industry, since it demonstrates an immediately scalable and profitable low-cost CO2 utilization solution that benefits each member of the value chain—from the cement producer through to the construction site, said Nova Scotia-based CarbonCure.

An integrated, scalable and cost-effective solution is essential for the industry to meet its WBCSD CSI low-carbon technology roadmap targets, while also creating value from CO2, which is typically considered a waste product.

The project demonstrates a turn-key solution for the cement and concrete industries that could create an opportunity to profitably capture and convert cement production CO2 emissions into value-added concrete for construction projects, the company said in a statement.The Global CO2 Initiative (GCI) estimates a potential $400 billion market opportunity for CO2 utilization products in the concrete sector alone, with the prospect of reducing 1.4 gigatonnes of annual CO2 emissions by 2030.

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