Displaying items by tag: carbon sequestration
10 sustainable cement and concrete technology developers launch the Decarbonized Cement and Concrete Alliance
18 January 2024North America: A new coalition for the scaling and deployment of low-carbon building materials, the creation of new clean cement and concrete jobs and the promotion of environmental justice launched earlier in January 2024. Called the Decarbonized Cement and Concrete Alliance (DC2), it comprises alternative cement developers Biomason, Brimstone, Chement, Fortera and Terra CO2, sequestration company Blue Planet Systems, circular concrete producer CarbonBuilt, biogenic limestone producer Minus Materials, hydrothermal processing technology developer Queens Carbon and electrified cement production technology developer Sublime Systems. DC2’s areas of engagement in policy will include tax credits, standards, ecolabeling and subsidisation, in line with the US Department of Energy’s Pathways to Commercial Liftoff: Low-Carbon Cement strategy.
CarbonBuilt’s government and community affairs manager Sal Brzozowski said “DC2’s platform of robust policy, standards and incentives to scale innovative solutions will not only accelerate deep decarbonisation, but also transform the concrete industry from one of the world’s largest CO2 emitters to one of the world’s largest carbon sinks.”
Neustark sees potential in German market
04 January 2024Germany: Switzerland-based CO2 mineralisation technology developer Neustark says that it sees major potential for recycling concrete from construction and demolition waste (CDW) to produce carbon-negative products using its process in Germany. Neustark inaugurated its first German plant, and 12th overall, at Marzahn in Berlin in late 2023. Capital Online News has reported that the start-up estimates that Germany generates 60Mt/yr of CDW concrete, but only recycles 600,000t/yr (1%). This contrasts with international CDW concrete recycling rates as high as 15% in Switzerland and the US.
The start-up, founded at the Federal Institute of Technology Zurich in 2019, currently absorbs 10kg/t of CO2 in its recycled materials, but aims to reach 60kg/t. Its investors include Holcim.
Paebbl trials 100t/yr carbon-storing cement reactor
30 November 2023Finland/Netherlands/Sweden: Paebbl has commenced production of its carbon-storing cement using its new 100t/yr Obelix reactor. The company says that the trial represents a 100x scale up of its capacity in under six months. The Obelix reactor produces cement in 500l batches. Paebbl’s cement has a CO2 storage capacity of 200kg/t. It expects to begin shipping samples to early adopter customers in the Benelux and Nordic regions from early 2024. The next scale-up for the company will come with the construction of a continuously operating pilot plant in late 2024, further increasing its cement capacity by a factor of 10.
Imperial College London team secures government funding for carbon negative cement development
20 July 2023UK: A team at Imperial College London has won a US$1.27m grant for its research into developing carbon negative cement from silica. The research won the Department for Energy Security and Net Zero (DESNZ)’s Carbon Capture, Usage & Storage (CCUS) Innovation 2.0 competition. The Imperial team sources its silica from natural olivine. It says that the compound behaves in the same way as other supplementary cementitious materials. Meanwhile, magnesia from the decomposition of the olivine can serve as a carbon sink in the form of magnesium carbonate. It, in turn, could serve as a raw material for concrete block production.
The DESNZ’s Net Zero Innovation Portfolio, of which the CCUS Innovation 2.0 competition is a part, has a budget of US$1.29bn.
Heidelberg Materials North America to study options for CO2 sequestration in Indiana
08 February 2023US: The Department of Energy’s (DOE) Carbon Storage Assurance Facility Enterprise (CarbonSAFE) initiative has awarded funding of US$8.9m to Heidelberg Materials North America to study the subsurface geology for suitability for the storage of carbon dioxide at the Mitchell integrated cement plant in Indiana. The proposed project will geologically characterise several prospective reservoirs under the Mitchell plant for storage of more than 50Mt of CO2 over a 30-year timeframe.
The award, which is managed by the National Energy Technology Laboratory, will be issued to the Illinois State Geological Survey at the University of Illinois (ISGS) as the prime contractor, with the company acting as a technical and industrial partner. Heidelberg Materials is contributing about US$1.5m in funding while ISGS will be contributing approximately US$0.6m for a project total of US$11.1m. The funding was part of a DOE initiative that generated nearly US$125m in funding for 10 projects to characterise suitability for carbon storage across the US.
Heidelberg Materials’ Mitchell cement plant is being upgraded with a new production line. Full production on the new line is anticipated to start in early 2023.