Displaying items by tag: Sustainability
Incheon National University team develops cement-based conductive composites for net-zero energy buildings
24 November 2021South Korea: Researchers at Incheon National University have discovered an optimal conductive carbon fibre volume for cement-based conductive composites for use in net-zero energy buildings. The team reported that a 1% conductive carbon fibre content facilitates maximum energy generation from the movements of occupants and the weather against floors and walls. It also enables the storage of electricity at safe voltages. The product is based on triboelectric nanogenerator (TENG) technology.
The team published its results in the journal Nano Energy in November 2021.
Cemex Zement appoints Orcan Energy for waste heat recovery system installation at Rüdersdorf cement plant
23 November 2021Germany: Cemex Zement has partnered with sustainable technology supplier Orcan Energy for the establishment of a waste heat recovery (WHR) plant at its Rüdersdorf, Brandenburg, cement plant. Orcan Energy will supply six generator modules for the installation. When commissioned in mid-2022, the WHR plant will cover part of the plant’s energy consumption. The German Federal Ministry for Economic Affairs and Energy contributed 50% of funds for the project.
Europe, Middle East, Africa & Asia regional president Sergio Menendez said “Efforts to achieve carbon neutrality at our Rüdersdorf cement plant by 2030 continue apace, and this project to install a WHR system is the latest significant milestone in our journey. It further demonstrates the value of forming expert alliances to investigate and then implement innovative technologies that will ensure the decarbonisation of our operation.”
Philippines: Singapore-based Blueleaf Energy says that it has secured a 20-year solar power supply with Holcim Philippines. The companies have signed a power purchase agreement whereby Blueleaf Energy will finance, build and operate a total of 29MW of solar power infrastructure in Norzagaray, Bulacan, and Bacnotan, La Union. These will supply 15% of the energy requirements of Holcim Philippines’ Bulacan and La Union cement plants respectively. Construction is scheduled for completion in 2024.
Holcim Philippines president and CEO Horia Adrian said “Reducing the carbon footprint of our operations is one of our key sustainability commitments. This year, we have made great progress in this area by stepping up production of blended cements and replacing coal with alternative fuels. Shifting to renewable solar energy will help us further improve as an environment steward and a partner in building progress in the country sustainably.”
Vicat presents its climate strategy
22 November 2021France: Vicat has reiterated its CO2 emissions reduction target of 55% between 1990 and 2030 and reaffirmed its 2050 carbon neutrality commitment. The company says that its will invest Euro800m in transitioning to lower-CO2 cement production between 2021 and 2030 in order to meet the 2030 target. It said that eight US and European cement plants with ‘limited decarbonisation standards’ currently generate 67% of its earnings before interest, taxation depreciation and amortisation (EBITDA).
Japan: Taiheiyo Cement and the University of Tokyo have patented a carbon capture system based on a new carbon fixation method. The method passes CO2-bearing gas over 40mm granules of a hardened cementitious material at 75 - 100°C. The granules then fix the CO2 from the stream to themselves, for utilisation or storage.
Vicat project at Montalieu-Vercieu cement plant to test hydrogen production technology from Genvia
19 November 2021France: Vicat plans to test hydrogen electrolysis technology provided by Genvia for a pilot project at its Montalieu-Vercieu cement plant. Genvia made the announcement following a tour of its facilities by President Emmanuel Macron. It will be working with Vicat, Hynamics, a subsidiary of EDF group, and EDF Energy on the initiative. Other pilot projects have been announced with steel producers ArcelorMittal and Ugitech.
Genvia is a hydrogen production joint venture between French Alternative Energies and the Atomic Energy Commission (CEA), Schlumberger New Energy, VINCI Construction, Vicat Group and the Occitanie Region. It is developing and promoting solid oxide technology to enable industrial decarbonisation through hydrogen production, energy storage and fuel applications at scale.
Uganda: Security provider G4S has installed solar powered laser security systems for Hima Cement at one of its plants and several mines. The system was commissioned in March 2021 and it uses chargeable solar cells in perimeter security towers. G4S says that the system will improve sustainability and reduce costs compared to conventional alternatives. Where sensors detect a breach, security guards will investigate using electric bikes. The supplier says that the bikes facilitate more covert operations compared to motor vehicles, in addition to having sustainability benefits.
Head of technology Samuel Tebandeke said “We wanted to challenge ourselves to think of a better solution for our customer. We knew that we wanted to introduce electronic perimeter security to enhance the protection for the three mines and the cement plant we protect. Other providers were proposing laying many kilometres of cabling underground to provide power for their electronic perimeter monitoring, but our team decided to investigate a greener solution.”
Holcim launches Strategy 2025 – Accelerating Green Growth
18 November 2021Switzerland: Holcim has launched its Strategy 2025 – Accelerating Green Growth plan to become a global innovative and sustainable building solutions leader. Under the plan, the group will expand its solutions and products sales to account for 30% of consolidated sales by 2025. During the three-year period, it aims to deliver continuous group sales growth of 3 – 5% and over-proportional recurring earnings before interest, taxation, depreciation and amortisation (EBIT) growth on a like-for-like basis. It is also targeting a 10% return on invested capital (ROIC), cash conversion of 45% and leverage below 1.5x.
As part of the new strategy, the group will aim to recycle 75Mt of materials, including 10Mt of construction waste, in its products in 2022 – 2024. It aims to invest Euro476m in green capital expenditure (CAPEX) and link 40% of its financing agreements to its sustainable performance.
Chief executive officer Jan Jenisch said “We delivered what we promised with our Strategy 2022 one year in advance, setting strong foundations for our next era of growth. With our new level of performance, we have the firepower to invest in solutions and products to make it 30% of our company, while leading the way in green building solutions from ECOPact green concrete to energy-efficient roofing.” He added “With our Accelerating Green Growth strategy, we are ready to seize the opportunities ahead on our way to becoming the global leader in innovative and sustainable building solutions.”
Blah Blah Cement?
17 November 2021Climate activist Greta Thunberg memorably summarised the outcome of the 2021 United Nations (UN) Climate Change Conference (COP26) as “blah, blah, blah” but what did it mean for the cement and concrete industries?
Making sense of the diplomatic language the UN uses is a full time job due to its impenetrable jargon. This is partly why climate activists and others may have become jaded about the outcome of the world’s biggest climate change jamboree. The conference of the parties (COP) tried desperately to hang on to the 1.5°C warming aim set at the Paris event (COP21) in 2015. This is dependent though on countries sticking to their 2030 targets and becoming net-zero by 2050 or earlier. Unfortunately, both China and India, two of the world’s current top three CO2 emitters, have announced net-zero dates of after 2050. Those two countries also drew fire in the western press for weakening the language used in the COP’s outcome document about the ‘phasing out’ or ‘phasing down’ of coal use. However, simply getting coal written on the final agreement has been viewed as a result. Other positive outcomes from the event included commitments for countries to review their 2030 targets in 2022, progress towards coordinating carbon trading markets around the world and work on adaptation finance from developed countries to developing ones.
The headline results from COP26 carry mixed implications for the building materials sector. The Paris agreement (COP21) has already achieved an effect in the run-up to COP26 by prompting the cement and concrete industries to release a roadmap from the Global Cement and Concrete Association (GCCA) in October 2021. Now it’s down to whether individual governments actually follow the targets and how they enforce it if they do. If they don’t, then the response from building material producers is likely to be mixed at best.
What may have a more tangible effect is the work on carbon markets at COP26. Countries were finally able to complete technical negotiations on the ‘Paris Agreement Rulebook,’ notably including work on Article 6, the section that helps to govern international carbon markets and allows for a global carbon offsetting mechanism. The European Union (EU) Emissions Trading Scheme (ETS) has shown over the last year how a high carbon price may be able to stimulate companies to invest in mitigation measures such as upping alternative fuels substitution rates and developing carbon capture and storage/utilisation projects. Critics would argue that it may simply be offshoring cement production and closing local plants unnecessarily. Making a more global carbon trading scheme work amplifies both these gains and risks. Either way though, having an international framework to build upon is a major development. Finally, work on adaptation finance could have an effect for cement producers if the money actually makes it to its destination. The big example of this announced at COP26 was a US$8.5bn fund to help South Africa reduce its use of coal. It is mainly targeted at power generation but local cement producers, as a major secondary user of coal, are likely to be affected too.
Alongside the big announcements from COP26 lots of countries and companies, including ones in the cement sector, announced many sustainability plans. One of these included the launch of the Industrial Deep Decarbonisation Initiative (IDDI) during COP26 by the governments of the UK, India, Germany, Canada and the UAE. This scheme intends to create new markets for low carbon concrete and steel to help decarbonise heavy industry. To do this it will disclose the embodied carbon of major public construction projects by 2025, aim to reach net zero in major public construction steel and concrete by 2050, and work on an emissions reduction target for 2030 which will be announced in 2022. Other goals include setting up reporting standards, product standards, procurement guidelines and a free or low-cost certification service by 2023.
All of this suggests that the pressure remains on for the cement and concrete sector to decarbonise, provided that the governments stick to their targets and pledges, and back it up with action. If they do, then the industry will remind legislators of the necessity of essential infrastructure and then continue to ask for financial aid to support the development and uptake of low carbon cements, carbon capture and whatever else. Further adoption of carbon markets around the world and global rules on carbon leakage could help to accelerate this process, as could adaptation finance and global standards for low carbon concrete. The next year will be critical to see if the 1.5°C target survives and the next decade will be crucial to see if global gross cement-related CO2 emissions will actually peak. If they do then it will be a case of ‘hip hip hurrah’ rather than ‘blah blah blah’.
Brazil: Members of the Brazilian National Cement Industry Association (SNIC) have committed to a 34% reduction in the CO2 emissions of their cement production to 375kg/t by 2050 from 564kg/t in 2019. Ten cement producers including Cimento Tupi, CSN Cimentos, InterCement and Votorantim signed the commitment. With the industry's forecast rate of growth in cement production capacity, this will result in possible total CO2 emissions of 45Bnt in 2050 compared to 36.7Bnt in 2020.
Planned CO2 emissions reduction investments before 2032 are US$637m across the industry.