Displaying items by tag: carbon sink
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.
Seratech's carbon-neutral cement wins Obel Award 2022
10 October 2022UK: Denmark-based architecture fund Henrik Frode Obel Foundation has named Seratech as winner of its Obel Award 2022. The award recognises architectural contributions to global development. Seratech has developed an olivine-based composite cement produced using CO2 from flue emissions, which can sequester double the CO2 of ordinary Portland cement (OPC). When used as 40% of a blend with OPC, it is able to completely offset the emissions of concrete production.
Team member Barnaby Shanks said "The beauty of the idea is that you can just use it as normal concrete. There are other carbon-neutral materials, but they can be limiting because they can only be precast, cured in a lab in special conditions and shipped elsewhere. We want people to retain the freedom to use concrete the way that they are used to. We don’t want to limit people in any way because we’ll just lessen the amount of impact we can have."