Displaying items by tag: Sustainability

US: Queens Carbon has secured US$10m in seed funding to scale up production of its novel cement and supplementary cementitious materials (SCMs). The start-up will build a 2000t/yr demonstration plant at strategic partner Buzzi Unicem USA's Stockertown, Pennsylvania, cement plant. The plant will demonstrate Queens Carbon’s low-energy Q-Reactor technology, which employs novel hydrothermal chemistry, with the help of steam and pressure, to combine standard cement feedstocks into carbon-neutral hydraulic cement and SCMs. The company’s flagship product, Q-SCM, is capable of replacing up to 50% of cement in concrete mixes. Queens Carbon says that it will now also begin preparations for its first full-scale commercial plant.

Buzzi Unicem USA was among investors in the seed funding round, led by Climate technologies investor Clean Energy Ventures, with participation from fellow venture capital firm Plug and Play.

Queens Carbon CEO Daniel Kopp said "With support from Clean Energy Ventures, Buzzi Unicem USA and the US Department of Energy, we're building next-generation technology and assembling the creative talent needed to drive industry revenues to move cement innovation forward and significantly reduce CO₂ emissions from cement production, all without a green premium."

Luigi Buzzi, Chief Technology Officer at Italy-based Buzzi, said "We know that achieving our goal of net-zero carbon emissions by 2050 demands forward-thinking solutions to enhance both our operations and our environmental performance.”

Oman: Raysut Cement is reactivating a partnership with China's Sinoma Overseas Development to launch Oman's first waste heat recovery (WHR) power plant at its Salalah site, according to the Oman Daily Observer. The groundwork for the 9MW facility was originally laid in 2018. Once operational, the facility is expected to reduce the plant’s reliance on national grid power by up to 30% and reduce CO₂ emissions by more than 50,000t/yr. Engineering design and site preparations are expected to be revisited before the end of 2025.

Global: The Global Cement and Concrete Association (GCCA) has launched the Low Carbon Ratings (LCR) system for cement and concrete, a new global rating based on products' carbon footprints. The system uses a clear AA to G scale to help customers prioritise sustainability in material selection across construction sectors worldwide.

The GCCA says that the LCR system is designed to be easily recognisable, with a simple visual graphic that indicates a product’s rating and provides consistency and comparability to other products. Countries will be able to adapt the system according to local standards.

UK: Holcim UK has published a report called ‘Making Sustainable Construction a Reality’ outlining its plans to support sustainable construction following a survey. It details trends shaping construction and the five commitments the company is making to ensure it reaches a more sustainable future. The key areas include: decarbonisation; circular economy and waste reduction; smarter construction; people and communities; and integrating nature.

The research, involving 2000 participants, revealed that 41% of the group thought that the UK’s urban spaces are currently built sustainably. In addition, 82% of the group believed there should be more access to green spaces across the country, 69% thought that the government should take the lead in driving sustainable action and 54% also held the opinion that businesses must play a key role. Finally, 80% wanted companies to be more transparent about their sustainability policies.

Lee Sleight, CEO at Holcim UK, said “Our research indicates that many recognise the need to incorporate more green spaces across the nation. Yet, it is clear that the government and businesses must work together to achieve this.” He added that the subsidiary of Holcim is addressing the challenges identified through methods such as accurate reporting, higher usage of alternative fuels, its sustainable product ranges and its ongoing Nature Strategy. Projects part of the latter initiative include planting a 64 hectare woodland at Glensanda Quarry in Scotland.

Brazil: Votorantim Cimentos has reported that it ended 2024 with global CO₂ emissions of 550kg/t of cementitious material produced, a reduction of 28% compared to 1990, the baseline year used by the cement industry. The level reflects a 1% year-on-year decrease from 556kg/t in 2023. Votorantim Cimentos’ 2030 decarbonisation target, approved by the Science Based Target initiative (SBTi), is 475kg/t of cementitious product.

Votorantim Cimentos’ global thermal substitution rate (TSR) was 32% in 2024, an increase over 2023’s TSR of 31%. Its 2030 target is 53%. The company’s clinker factor was 72.5%, a slight fall compared to 73% in 2023. Its 2030 goal is 68%. 34% of the electricity consumed by Votorantim Cimentos in 2024 came from renewable sources, the same as in 2023. The company’s goal is to have 45% of the energy consumed globally come from renewable sources by 2030.

Álvaro Lorenz, Global Director of Sustainability, Institutional Relations, Product Development, Engineering and Energy, said “Globally, we have made progress in pilot projects for CO₂ capture, installed new co-processing and renewable energy sites and systems, and launched low-carbon products. All these efforts will contribute toward our decarbonisation journey and help us achieve our goal of producing carbon-neutral concrete by 2050.”

Spain: Holcim, IGNIS P2X and Exolum have launched Eco2fly, a project to convert industrial CO₂ emissions into sustainable aviation fuel at Holcim’s Villaluenga de la Sagra plant in Toledo. The facility will capture over 700,000t/yr of CO₂ from the plant’s cement production process and convert it into 100,000t/yr of sustainable aviation fuel using ‘green’ hydrogen. The remaining CO₂ will be stored in geological repositories. Over its first 10 years, the project will reportedly avoid more than 6.5Mt of CO₂ emissions.

Türkiye: Medcem has completed testing of its new waste heat recovery (WHR) facility, which will recover 25% of the energy demand of the plant’s second rotary kiln line commissioned in 2024.

The 9.6MW facility uses an organic rankine cycle (ORC) system to generate electricity from a single heat source. The company says that this will lead to significant cost savings in energy expenses while also reducing CO₂ emissions.

Australia: Boral will receive US$15.4m in government funding for a kiln feed optimisation project at its Berrima Cement Works, with CO₂ emissions expected to reduce by up to 100,000t/yr, based on predicted production rates. The Powering the Regions grant will support the producer’s installation of a new specialised grinding circuit and supporting infrastructure, which will raise the use of alternative raw materials in kiln feed to 23% from 9%, lowering the amount of limestone used.

Boral will use steel manufacturing by-products and industrial waste, including granulated blast furnace slag, steel slag, cement fibre board, fly ash and recycled fine concrete aggregates. The project will be operational in 2028.

The head of innovation and sustainability at Boral, Ali Nezhad, said “In terms of the resulting emissions intensity of the manufactured clinker, the project will result in up to 11% reduction in clinker emission intensity, 9% attributable to a reduction in calcination emissions and 2% attributable to thermal efficiency gains.”

India: Dalmia Cement (Bharat) will procure 10MW of solar power from Kilavikulam Rajalakshmi’s captive plant in Tamil Nadu. The producer will also acquire a 35% equity share in the solar power developer.

Kilavikulam Rajalakshmi is a special purpose vehicle for the 10MW solar project. Dalmia Cement said the acquisition will increase its renewable power supply as part of its commitment to RE100 by 2030 and becoming carbon negative by 2040.

The European Union (EU) is set to launch its Green Deal Industrial Plan, today, on 26 February 2025. It is the latest plan to help industry in the region reach net zero whilst remaining competitive. Key parts of the scheme that have been seen by the media include support for industries facing high energy prices, tax breaks for decarbonisation projects, simplifying the cross border adjustment mechanism (CBAM), linking funding for industrial CO₂ cutting more directly to revenue gathered from the emissions trading scheme (ETS) and revamping procurement rules.

Cembureau, the European cement association, presented its comments on the impending announcement earlier this week. On CBAM it said that more work was required on exports, “such as export adjustment or continued free allowances for exported goods through the application of the destination principle which merits more in-depth analysis and discussion as to its WTO compatibility.” On financing it called for 75% of ETS taxation on the cement sector to be funnelled straight back again in the form of a cement decarbonisation fund. On infrastructure it called for competitive access to low-carbon energy sources such as thermal biowaste and electricity. It also lobbied for the rapid-development of CO₂ pipelines and storage sites. Finally, on lead markets it asked that concrete carbonation and CO₂ use in construction materials be recognised as a carbon sink and that carbon capture and utilisation using CO₂ from industrial sectors be acknowledged through a review of the CO₂ accounting rules in the ETS.

Lobbyists from the other side of the argument, also ahead of the official unveiling of the Green Deal Industrial Plan, took a dim view of the ETS. A report published by Carbon Market Watch and WWF called for greater scrutiny to be placed on the scheme. Its argument is that the “current architecture of the EU ETS continues to reward heavy polluters by granting them free allowances instead of incentivising emissions reductions.” Holcim, Heidelberg Materials and Cemex were each singled out as having received more free allowances under the ETS than the actual emissions they were responsible for in 2023. The report also reflected the growing environmental backlash against carbon capture and utilisation and/or storage (CCUS). In its view the money from the ETS going into the Innovation Fund should be directed at schemes that directly reduce emissions, not at CCUS projects, although it did concede that the cement and lime industries were some of the few sectors that should be allowed funding towards CCUS. This may be a point for the cement sector to watch for in the future if there ends up being a wider backlash against CCUS in general.

The Carbon Market Watch-WWF case is that the cement sector (and others) have received far too many free allowances in the ETS for far too long. The authors admit that the allowances are set to fall fast, to 2034, as the CBAM comes in but they don’t think that anywhere near enough has been done. This has not been helped over the years by news stories occasionally emerging of idled cement plants appearing to make money from emissions allowances. These occurrences date back to the drop in production following the financial crash in 2008 but there have been more recent examples.

Graph 1: Allowances for and emissions from clinker production from the emissions trading scheme in the European Union, 2017 - 2023. Source: EU Transaction Log (EUTL).

As Graph 1 above shows the environmentalists may be overstating their point on the ETS given that emissions were higher than the free allocation in 2018, 2019, 2021 and 2022. Roughly speaking, both the allowances and emissions by the cement sector from clinker production have been dropping since 2017 and further back to the mid-2000s. The system is intended to squeeze emissions but it doesn't take into account short-term variations in market conditions. Cembureau data shows that production rose in 2021. Sure enough, emissions jumped above the allocation. Although the cement production data is yet to be released for 2023, it is looking fairly likely that it will have decreased. Hence, emissions have fallen below the allocation level.

Few are likely to be happy with the EU’s Green Deal Industrial Plan. For producers, it is unlikely to add sufficient support against the additional ‘green’ cost burden. For environmentalists, it doesn't go far enough. The usual equilibrium for EU sustainability legislation is aiming at the target of net-zero without killing industry. The current US administration has further tipped this balancing act with its threats to fight against CBAM and the like with trade tariffs. Tom Lord, Redshaw Advisors described the EU ETS as a political construct at the Global FutureCem Conference that took place in February 2025 in Istanbul. This also applies to the EU’s green legislation (like any laws). Subsequently, certainty is a word that crops up frequently in discussions about EU green policies. Can EU industry be certain that these political constraints remain should circumstances change? With the ETS allowances dropping, CBAM coming and industry facing higher energy prices than its competitors, we’re about to find out how committed the EU is on net-zero and who the winners and losers will be.