Displaying items by tag: CO2
Solidia Technologies ignites pilot line at San Antonio headquarters
01 November 2023US: Solidia Technologies has commenced production of its mineralised CO2-based supplementary cementitious material (SCM) at a pilot line at its headquarters in San Antonio, Texas. The pilot line increases the company’s production capacity of the SCM by a factor of 25.
Solidia Technologies senior director of strategy and business development Pradeep Ghosh said "With the dramatic increase in production capacity that the new pilot line brings, we are now shipping significant quantities of Solidia SCM to ready-mix concrete producers, transport agencies and contractors to qualify and trial our material."
France: Lafarge France has ignited the new kiln at its Martres-Tolosane cement plant following a Euro120m upgrade. Local press has reported that the upgrade replaced the plant’s existing kilns and preheater tower with entirely new equipment. The new kiln has tripled the plant’s capacity, to 2.1Mt/yr from 0.7Mt/yr. Meanwhile, the new preheater tower will help to reduce the plant’s electricity consumption by over 20%. As a result of the upgrade, the Martres-Tolosane plant can now support an alternative fuels (AF) substitution rate of 60%, compared to 20% beforehand. Lafarge France aims to carry out further work to reach 85% AF substitution at the plant by 2027. Other planned projects include the installation of a carbon capture system.
Lafarge France chief executive officer François Petry said “We are going to create a research and innovation centre here dedicated to the capture of CO2, with the ambition of ultimately making the Martres-Tolosane plant net zero carbon.”
Philippines: Holcim Philippines has appointed I Squared Capital subsidiary Berde Renewables to build, maintain and operate two rooftop solar power plants, at its Bulacan and La Union cement plants, respectively. The solar power plants will have a combined capacity of 7.8GWh/yr and reduce Holcim Philippines’ CO2 emissions by 5500t/yr. The Business Mirror newspaper has reported that the projects advance the producer’s aim to reduce its energy-related CO2 emissions by 65% between 2018 and 2030.
Holcim Philippines president and CEO Horia Adrian noted the 20% reduction in overall CO¬2 emissions that the company has already achieved up to 2022 and said “This project further strengthens our ability to support Holcim's net zero direction and the country's nationally determined contributions.”
US: Holcim US will invest US$100m in an expansion to raise its Ste. Genevieve cement plant’s capacity by 15% to 4.6Mt/yr. The expansion will involve the installation of a fifth vertical roller mill (VRM) for cement grinding and a new mineral component addition system, alongside a rail-loadout expansion. The producer says that the expanded plant will have lower net CO2 emissions than before. Construction is set to commence in 2024.
Toufic Tabbara, head of Holcim’s North America region, said “With an emphasis on achieving the highest levels of environmental performance and operational efficiency, Ste. Genevieve has been the leader in US cement manufacturing since it was built in 2009. This investment will ensure we maintain that leadership in supporting the sustainable growth of our nation’s infrastructure and residential construction while accelerating net carbon reduction across the built environment.”
Solidia Technologies to sell carbon credits via 3Degrees
26 October 2023US: Solidia Technologies has appointed climate consultancy 3Degrees to manage the measurement, verification and sale of carbon credits for CO2 emissions reductions generated using Solidia Technologies products. Users of the products can deploy the credits against their Scope 3 emissions from cement and concrete, as well as to compensate for other greenhouse gas emissions.
Solidia Technologies chief executive officer Russell Hill said "By partnering with 3Degrees to issue carbon credits, Solidia is providing a mechanism for the marketplace to invest in technologies that will accelerate and enable global carbon emissions reduction.”
Update on construction and demolition waste, October 2023
25 October 2023Cementos Molins has been celebrating the first anniversary this week of its alternative raw materials unit at its Sant Vicenç dels Horts plant near Barcelona. It has processed 75,000t of waste since September 2022 when the site started up. More is yet to come as the unit has a production capacity of up to 200,000t/yr. The facility receives waste in coarse, granular, powder and sludge formats. Waste from concrete plants is crushed and screened to produce recycled aggregate. Industrial and construction waste is dosed and homogenised to produce alternative raw materials for cement production.
Global Cement Weekly has covered construction and demolition waste (CDW) a couple of times already so far in 2023. A number of cement producers are investing in the sector - including Holcim, Heidelberg Materials, CRH, Cemex – by developing technology, buying up other companies, setting up internal CDW divisions and so on. Holcim and Heidelberg Materials have been the more obviously active participants over the past six months based on media coverage. In September 2023 Holcim France commissioned the Saint-Laurent-de-Mûre alternative raw materials plant and Holcim Group invested in Neustark, a company promoting technology to sequester CO2 in CDW. In August 2023 Lafarge Canada also completed the first stage of a pilot project to use CDW in cement production at its St. Constant plant in Quebec. Heidelberg Materials meanwhile announced in October 2023 that a forthcoming upgrade to its Górażdże cement plant in Poland would include a new CDW recycling unit and in September 2023 it launched a CDW division for its subsidiary Hanson UK.
Previously we have described how the European Union (EU) has set recovery targets for CDW. However, McKinsey & Company published research in March 2023 setting out the economic case for cement and concrete companies looking at CDW. It estimated that “an increased adoption of circular technologies could be linked to the emergence of new financial net-value pools worth up to roughly Euro110bn by 2050.” It is not a certainty and there is risk involved, but adopting circular practices is one way to reduce this risk. It then went on to predict that recirculating materials and minerals could generate nearly Euro80bn/yr in earnings before interest, taxation, depreciation and amortisation (EBITDA) for the cement and concrete sectors by 2050. The biggest portion of this could come from using CDW in various ways such as a clinker replacement or as an aggregate in concrete production, or the use of unhydrated cement ‘fines.’ Capturing and using CO2 and increasing alternative fuels (AF) substitution rates would have a financial impact but not to the same scale.
Graph 1: CO2 abatement cost via circular technologies for cement and concrete sectors. Source: McKinsey & Company.
Graph 1 above puts all of the McKinsey circular technology suggestions in one place with the prediction that all of these methods could reduce CO2 emissions from cement and concrete production by 80% in 2050 based on an estimated demand of 4Bnt/yr. The first main point they made was that technologies using CO2, such as curing ready-mix or precast concrete, can create positive economic value at carbon prices of approximately Euro80/t of CO2. Readers should note that the EU emissions Trading Scheme CO2 price has generally been above Euro80t/yr since the start of 2022. The second point to note is that using CDW could potentially save money by offering CO2 abatement at a negative cost through avoiding landfill gate fees and reducing the amount of raw materials required. This is dependent though on government regulation on CO2 prices, landfill costs and so on.
Cement producers have been clearly aware of the potential of CDW for a while now, based on the actions described above and elsewhere, and they are jockeying for advantage. These companies are familiar with the economic rationale for AF and secondary cementitious materials (SCM) in different countries and locations. CDW usage is similar but with, in McKinsey’s view, existing CO2 prices, landfill costs, and regulatory frameworks all playing a part in the calculations. Graph 1 is a prediction but it is also another way of showing the path of least resistance to decarbonisation. It is cheaper to start with AF, SCMs and CDW rather than barrelling straight into carbon capture. The beauty here is that cement and concrete sold, say, 50 years ago is now heading back to the producers in the form of CDW and it still has value.
US: Summit Materials has entered into a memorandum of understanding (MOU) with hydrogen producer PCC Hydrogen (PCCH2). The MOU establishes an alliance to develop a fuel replacement strategy for Summit Materials’ cement production. PCCH2 will build a hydrogen plant to supply green hydrogen at a cement plant belonging to Summit Materials subsidiary Continental Cement.
Continental Cement president David Loomes said "Continental Cement has a longstanding commitment to environmental stewardship, seeking out opportunities to develop innovative practices and differentiated solutions to build a better tomorrow. Our company has signed on to the Portland Cement Association (PCA)'s Roadmap to Carbon Neutrality, with a goal of achieving carbon neutrality across the value chain by 2050. By coupling PCCH2's hydrogen production process with our cement manufacturing know-how, we are taking a bold stride towards achieving that goal, while continuing the push to cost-effective decarbonisation of cement manufacturing."
CirCap-led consortium invests in Nanogence
19 October 2023Switzerland: Reduced-CO2 cement catalyst developer Nanogence has secured an undisclosed sum from a consortium of investors led by investment fund CirCap. Nanogence’s catalyst reduces the CO2 emissions of cement production by 40%, without changing production processes. Tech EU News has reported that the catalyst is capable of increasing cement’s strength and durability compared with that of ordinary Portland cement (OPC) produced without it. Prior to the latest financial development, the company had raised US$2.7m-worth of funding.
CEO Abhishek Kumar said “We are excited to receive the support from incoming renowned investors in this essential journey to accelerate the transition towards a low carbon built world. With growing demand worldwide, we need to align with like-minded strong backers for our growth phase.”
US Department of Energy grants C-Crete Technologies US$2m
17 October 2023US: The US Department of Energy has awarded C-Crete Technologies US$2m in funding. C-Crete Technologies is developing a method for using CO2 captured at industrial sources or from the air as an ingredient in its cement-free concrete. The binder will produce almost no CO2 and continue to absorb more CO2 from the air over time. It offers scalability and cost-parity with conventional cement for concrete producers, according to the developer.
C-Crete Technologies president Rouzbeh Savary said “We are committed to crafting a cement-free, carbon-negative ready-mix concrete that doesn’t just mitigate CO2 emissions but actively contributes to reversing climate change. Our aim is nothing short of revolutionising this hard-to-abate, carbon-heavy sector.”
Spain: Cementos Molins inaugurated its new Euro6.6m headquarters in Sant Vicenç dels Horts, Catalonia. The facilities include a 3250m2 solar power plant, which will supply 100% of the energy consumed in the building’s operations. The solar power plant consists of an array of 1455 photovoltaic panels. Cementos Molins says that it also used recycled materials where possible in building its new headquarters.
CEO Julio Rodríguez said “We celebrate 95 years of life and we feel proud to contribute to the development of the country and its social evolution. In our DNA is the will to collaborate with our environment.”