Displaying items by tag: CO2

Italy: The pilot plant for the Cleanker project was inaugurated at Buzzi Unicem’s Vernasca cement plant in early October 2020. The purpose of the calcium looping technology project is to demonstrate a technology for capturing carbon dioxide (CO₂) in cement plants. Tests will be run for around 10 months with a total actual operating time of one month at most.

Switzerland: LafargeHolcim has announced the launch of EcoLabel, a brand to encapsulate its green cements and concretes. All products bearing the label must have either a 30% lower carbon dioxide (CO₂) footprint compared to the local industry standard or use 20% recycled content. The company says that the reason behind EcoLabel is to “support builders in making greener choices” and to “accelerate the company’s Net Zero Journey.”

Chief sustainability officer Magali Anderson said, “I am very proud of how our company is turning our net zero pledge into action across more than 70 countries, with our broad range of green building solutions. The EcoLabel is a key milestone on this journey, confirming LafargeHolcim’s commitment to lead the way in sustainability and innovation.”

Germany: Cemex Zement has announced the start of carbon-neutral building materials development at its 1.9Mt/yr Rüdersdorf, Brandenburg cement plant. Called Vision Rüdersdorf, the project consists of, “the comprehensive investigation of various approaches to breakthrough technologies in order to prevent process-related carbon dioxide (CO₂) from entering the atmosphere, but to use it for beneficial purposes. The investigation areas can be divided into capture, storage or use of CO₂. This will help towards Cemex’s target of 55% CO₂ emissions reduction across Europe by 2030 and its commitment to deliver carbon-neutral concrete by 2050.

Chief executive officer (CEO) Rüdiger Kuhn said, “For years, sustainable success has been achieved here in the reduction of fossil fuels and in the selection of alternative recipe ingredients for cement. The experienced team is always looking for possible improvements. When it came to determining the best possible CO₂ emission values, the Rüdersdorf plant was always at the forefront of the European cement industry and has thus also earned an excellent reputation in the global Cemex organisation.”

In order to realise Vision Rüdersdorf, the producer has partnered with companies from other industries. Managing director and plant manager Stefan Schmorleiz said, “In an interesting approach, the CO₂ that we capture is used as a raw material for downstream processes in the chemical industry. Another approach is to innovate in the storage of CO₂. With these efforts, and our commitment to review and invest in these technologies, Cemex Zement is making a contribution to the decarbonisation of the cement industry.”

US: The Portland Cement Association has launched greenercement.com, an informative website site dedicated to Portland Limestone Cement (PLC) applications and benefits. The organisation says that PLC’s 10% reduced carbon dioxide (CO₂) emissions when compared with Ordinary Portland Cement (OPC) make it the sustainable choice for innovative construction.

President and chief executive officer (CEO) Mike Ireland said, “PLC is another example of the cement industry evolving over the years, continuing to innovate and sustainably producing the high-quality cement that is needed to help keep America’s infrastructure strong and resilient.” He added, “This initiative will help educate engineers and other specifiers on how PLC can easily be incorporated into numerous projects.”

France: Social housing developer Immobilière 3F says that it has signed a contract with construction company Groupe GCC for the use of Hoffmann Green Cement Technologies' 78% reduced-carbon dioxide (CO₂) emissions concrete for the construction of an 85-unit housing project in Saint-Leu-la-Forêt, Île-de-France.

Groupe GCC says that it participated in the development of the concrete as part of a three-year development partnership agreement with Hoffmann Green Cement Technologies signed in July 2020.

Mexico: Cemex has announced the signing of a collaboration agreement with Switzerland-based alternative fuel (AF) specialist Synhelion, through which the pair aim to develop the use of solar power as an alternative heat source to fuel in clinker production. Pilot testing of Synhelion products will begin at a Cemex plant in late 2022, at a total investment cost of up to US$10m.

Head of global research and development Davide Zampini said, "Thanks to the technology that Synhelion is developing, we can bring the solar heat up to 1500°C. In the process, we can also capture the carbon dioxide (CO₂), and that fits perfectly into the process of the synthetic fuel."

Mexico: Cemex says that Carbon Trust has validated its roadmap to decarbonise global operations in line with the Sectoral Decarbonisation Approach (SDA) 2-degree scenario (2DS) developed by the International Energy Agency (IEA). The validated roadmap is intended to help the company to achieve a 35% reduction of net carbon emissions by 2030. The findings validate Cemex's roadmap for reducing Scope 1 and 2 emissions.

The Carbon Trust has assessed the technical feasibility of the plan based on guidelines defined by international institutions including the International Energy Agency, the Cement Sustainability Initiative, and the European Climate Research Alliance. The CO₂ reduction methods include the use of alternative fuels, using decarbonated raw materials, renewable power projects, and novel cements, among others. The validation also included a review of Cemex's commitment to implement the scheme based on governance mechanisms and business planning.

“The magnitude and complexity of change required by a company such as Cemex to decarbonise its global operations is significant. Our assessment provides the organization’s management, investors and stakeholders with an independent validation that its commitments are backed up by sound assumptions and planning,” said Aleyn Smith-Gillespie, Associate Director Advisory at the Carbon Trust.

India: Dalmia Bharat subsidiary Dalmia Cement has joined five leading companies of other sectors in signing the Near-Zero pledge, an industry charter targeting “near-zero carbon dioxide (CO₂) emissions by 2050” at the virtual Climate Week NYC. The Times of India newspaper has reported that the pledge consists of a commitment to “undertake carbon sequestration efforts, if needed, and set reporting indicators and targets to enable tracking of corporate goals on the decarbonisation pathway.”

Dalmia Cement urged national governments to “positively enforce targets for efficiency, emissions reduction and circular economy to make carbon neutrality by 2050 a reality.”

Spain: LafargeHolcim subsidiary Holcim España has announced the launch of the Carbon Challenge, a think tank to promote CO₂ emissions research and reduction. The company says that the plan involves “the formation of various working groups in areas such as reducing process emissions, reducing the emission factor for fuels and changing cement content of concrete and investigating alternative additives.” This is part of its Ecological Transition strategy, in addition to its Euro20m carbon footprint reduction investments announced on 31 December 2019.

Sustainability and Health director Raúl Pérez said, “We have high expectations for this project. It is a laboratory of ideas that will allow us to add and share knowledge that materialises in concrete initiatives applied to our processes, products and solutions, all with a common denominator: anticipating the new European decarbonisation scenario with an established plan to be carbon neutral by 2050.”

Cemex last week. HeidelbergCement and LafargeHolcim this week. China yesterday. One can’t seem to move for major building materials companies (or their owners) issuing carbon neutral strategies at the moment. This week HeidelbergCement first launched its ‘Beyond 2020’ plan, a mixture of financial, portfolio and sustainability goals. Then, LafargeHolcim said that it had signed a pledge with Science-Based Targets (SBT) towards meeting intermediate targets by 2030. Last night, President Xi Jinping told the United Nations (UN) General Assembly in New York that China was aiming to hit peak emissions before 2030 and carbon neutrality by 2060.

The timing of these various sustainability goals are directly or indirectly linked to Climate Week NYC, a notable annual event on the climate change calendar that is taking place at the moment. So it’s a good time for large-scale industrial CO₂ emitters, like building material producers, to have something positive to say.

China’s announcement steals the limelight given that the country produces around half of the world’s cement and holds a higher share of clinker production capacity. Western media has pointed out the geopolitical implications of Xi’s statement that was delivered shortly after a speech by US president Donald Trump, a notable climate change sceptic. Xi’s speech didn’t contain any details so it may simply have been an attempt to demonstrate global leadership. Yet if the Chinese government makes a go of it, the effect could be profound. Data from the Centre for International Climate and Environmental Research (CICERO) shows that the Chinese cement industry emitted an estimated 782Mt CO₂ in 2018 compared to 1.50Gt CO₂ from the cement industry globally and 37.1Gt CO₂ from all human-related sources. In other words, the Chinese cement industry was responsible for 2% of all CO₂ emissions in 2018. And this industry is mostly owned by a government that has just publicly declared a carbon neutral target.

In some ways the other announcements, by the western-based multinational building material companies, are even more radical since these producers are subject to market forces. These companies don’t have to do this. They also contain more specifics than Xi’s words so far.

HeidelbergCement says it has brought forward its CO₂ emissions target for 2030 of 525kg CO₂/t (specific net CO₂ emissions per tonne of cementitious material) to 2025. That’s a 30% decrease from 752kg CO₂/t in 1990. Its new goal for 2030 is below 500kg CO₂/t. The main emission reduction methods it outlines include: increased use of alternative raw materials and fuels; increased use of secondary cementitious materials to reduce the clinker factor of cement; investment in plant efficiency and CO₂ reduction at the plant level; and increased share of low-carbon concrete products.

Chart 1: HeidelbergCement’s path to net carbon zero concrete: Source: Leading the way to carbon neutrality, HeidelbergCement.

Chart 1 above outlines HeidelbergCement’s thinking post-2030 with further reductions to CO₂ emissions mainly achieved through circular economy methods and different carbon capture techniques. Two points to hold in mind here. One: note the current uncertainty about which route will provide the biggest share of the reduction. Two: this chart considers concrete, not cement.

LafargeHolcim’s announcement was that it has joined Science Based Targets initiative (SBTi) ‘Business Ambition for 1.5°C.’ It says that by doing so it has become the first global building materials company to sign the pledge with intermediate targets for 2030, validated by SBTi. This is slightly confusing given that other building materials companies have had different dealings with the SBT as it has worked towards its current scheme. Earlier this month, for example, we reported that Taiwan Cement had started an SBT project in 2019 and had some targets approved by the SBTi in June 2020. Grupo Cementos de Chihuahua (GCC) said it was joining SBTi at the start of 2020 and HeidelbergCement reported its SBTi approved targets in mid-2019. Finally, India-based Dalmia Cement is also on the SBTi ‘Business Ambition for 1.5°C’ list but it is a stretch to describe it as a ‘global’ company.

The core of LafargeHolcim’s statement is a further reduced target for CO₂ intensity in cement of 475kg CO₂/t by 2030. So far it’s decreased its CO₂ intensity by around 23% to 516 kg CO₂/t in 2019 from ~730kg CO₂/t in 1990. There’s less looking ahead after 2030 compared to HeidelbergCement but the measures outlined until then include: more use of low-carbon and carbon-neutral products; increased use of alternative raw materials and fuels; doubling waste-derived fuels in production to reach 37%; greater use of calcined clay and developing novel cements with new binders; and operating the company’s first net zero CO₂ cement production facility.

Many of the various networks and initiatives across the climate action community came together in June 2020 as part of the UN backed ‘Race To Zero Campaign,’ an attempt to align the disparate leading net zero initiatives ahead of the 26th United Nations Climate Change Conference (COP), due to take place in November 2021 in Glasgow, Scotland. This swirl of different net zero schemes also partly explains the confusion over the different organisations backing sustainability targets that companies can sign up to. So it’s a good thing to see closer collaboration here.

More cynical readers will have latched on to president Xi’s opportunity to show up President Trump in the climate change action stakes. They may also prefer news stories about activist investors prompting change at shareholder-owned companies as they increase their portfolios or stories like Morgan Stanley’s announcement this week that it has a new commitment to reach net-zero financed emissions by 2050. If the investment bank actually means it and other financiers follow suit then the fiscal incentives for net zero draw closer and the rest should follow. Moneys talks… and hopefully CO₂ stays buried in the ground.

For sustainability comparisons among the top global cement producers see the October 2020 issue of Global Cement Magazine