Displaying items by tag: CO2

UK: SigmaRoc subsidiary CCP has launched Greenbloc Standard, Ultra and Premium. The new designations correspond to 50%, 80% and 100% cement substitution. Professional Builder News has reported that Using Greenbloc Standard reduces structures’ CO₂ emissions by 77% compared with structures built with conventional ordinary Portland cement (OPC)-based blocks. For an average semi-detached house, this is equivalent to 2.7t of CO₂.

CCP general manager Phil Rotheram said “The expansion of our Greenbloc range continues our commitment to sustainable alternatives to our product offering as we fully commit to the challenges of removing embodied carbon from the built environment.”

Greenbloc Ultra featured in a gold medal-winning garden at the RHS Chelsea Flower Show 2023 in May 2023.

Canada: The district council of Capital Regional District (CRD) says that it expects to resume sending biosolids to Lafarge Canada's Richmond cement plant in early June 2023. This follows a reported reduction in production at the unit in 2023 and 2022, according to the Times Colonist newspaper. The 1.1Mt/yr cement plant previously used biosolids supplied by the CRD as an alternative fuel in its cement production. However, during the current hiatus the biosolids have been sent to landfill instead.

The Richmond cement plant is the site of the CO₂MENT carbon capture and utilisation project. The project proceeded to its third phase, which consists of a capture capacity expansion and the installation of a liquefaction plant, in May 2023.

UK: CRH subsidiary Tarmac has pledged its support to the Route to Net Zero initiative to decarbonise the UK's logistics sector. Under the initiative, companies involved in transportation will implement changes aimed at achieving net zero CO₂ emissions by 2050. Tarmac already transports 9Mt/yr of materials around the UK by rail.

Tarmac's logistics director Graham Waters said “Signing up to Logistics UK’s Route to Net Zero pledge marks a further step for our business, underscoring our commitment to eliminating carbon emissions from our extensive UK-wide logistics networks and accelerating this process through collaboration with our haulier partners and the wider industry."

Finland: Finnsementti is carrying out upgrades to its two integrated cement plants as part of its sustainability targets to 2030. The subsidiary of Ireland-based CRH is installing new main burner equipment at its Lappeenranta plant with completion scheduled for mid-2023. The project is intended to allow the plant to increase its use of alternative fuels. The company’s Parainen plant is replacing its satellite coolers with a grate cooler with completion scheduled for the spring of 2024. This work is expected to decrease the plant’s emissions by 10%. Overall the group is preparing to decrease its CO₂ emissions by 30% by 2030 compared to 2021 levels.

Sweden: Heidelberg Materials Sweden has called for swifter action to be taken by the government on a planned upgrade to the mains electricity supply to the island of Gotland. The building materials company is planning to build a full-scale carbon capture and sequestration (CCS) unit at its integrated Slite cement plant on the island by 2030. However, the newly approved plans to build two new electrical transmission cables to Gotland are currently scheduled for completion in 2031. The cement plant is expected to require annual electricity requirements of up to 1.5TWh with a power requirement of up to 250MW when the CCS unit is completed.

The cement producer has welcomed the government’s upgrade plans so far but has impressed the urgency of its timeline to build a CCS unit at the Slite plant. It says it is currently considering investing around Euro850m on the project. If completed the CCS unit is expected to capture up to 1.8Mt/yr of CO₂. The company said that this corresponds to approximately 3% of Sweden's emissions annually.

Iceland: Sementsverksmidjan says it has offset its domestic transport CO₂ emissions through an offset scheme with the government environmental agency Landgræðirin. In 2022 the subsidiary of Germany-based Heidelberg Materials offset 484t of CO₂-equivalent by restoring a birch forest and dry-land ecosystems.

Europe: 12 decarbonisation-focused companies from across the European cement and concrete sector have launched the Alliance for Low-Carbon Cement & Concrete (ALCCC). The alliance has called on policymakers to change building standards to help low-carbon alternatives to enter the cement and concrete markets. It further said that green procurement and targeted financing instruments would help to reduce sectoral CO₂ emissions. It said that a progressive decline in clinker factor to 60%, 50% or 40% by 2050 will reduce CO₂ emissions by over 50%. The ALCCC says that it is ready to lead the sector towards a swift, low-cost and viable decarbonisation pathway. Participants in the alliance include France-based Hoffmann Green Cement Technologies, Ireland-based Ecocem and US-based Fortera.

Fortera's Europe director Thierry Legrand said "Climate action is a global priority, and collaboration is essential to advancing emissions-reducing technologies and policies. This alliance represents collective action by scientists, engineers, entrepreneurs and environmental advocates to reduce CO₂ emissions from cement production."

Germany: Holcim Deutschland has commenced a carbon capture trial at its 950,000t/yr Beckum cement plant in Beckum-Kollenbach, North Rhine-Westphalia. The trial will employ amine scrubbing technology to separate CO₂, which it will then seek to commercialise for other industrial uses. Holcim Deutschland's partners for the project are Technische Universität Berlin and construction engineering firm thyssenkrupp Uhde. The trial also has funding from the German government.

Italy: Italcementi, part of Heidelberg Materials, has filed a patent application for a titanium dioxide-based cementitious material. The Patent Office Journal has reported that the material consists of titanium dioxide (TiO2) imbued with carbon dopants. This is produced by irradiating the TiO₂ in the presence of an inert gas and an organic compound.

UAE: Holcim subsidiary Lafarge Emirates Cement (LEC) has begun construction of a 10MW waste heat recovery (WHR) plant at its 3.2Mt/yr Fujairah cement plant. Supplier Engie Solutions says that it expects to commission the installation later in 2023. Trade Arabia News has reported that the equipment is based on a closed-loop organic Rankine cycle and will eliminate 29,000t/yr of CO₂ - 28% of the Fujairah cement plant's energy-related CO₂ emissions.

LEC general manager Olivier Milhaud said "Engie’s energy-as-a-service model means guaranteed energy savings and higher reliability and resilience, with no capital outlay and no need for additional staff." He continued "We are fully committed to the UAE’s sustainability goals, including the 2050 Net Zero vision."