Displaying items by tag: circular economy

US: St Marys Cement won three national awards at the Slag Cement in Sustainable Concrete Awards 2023. The producer won the awards for supplying its slag cement for the construction of Wixom Assembly Park in Wixom, Michigan; of 333 North Water in Milwaukee, Wisconsin, and of Excellerate Manufacturing in Appleton, Wisconsin.

UK: Heidelberg Materials UK has opened a new circular materials hub at its Appleford depot in Oxfordshire. The site will recycle construction waste for use in low-CO₂ building materials. The move advances the company’s strategy to conserve natural materials and support the circular economy.

Recycling managing director James Whitelaw said “Recycling, reusing and reducing the use of primary raw materials is crucial to reaching net zero. Our network of recycling hubs will allow us to provide the most sustainable products to our customers through circularity and innovation to enable building more with less.”

Indonesia: Siam Cement Group (SCG) subsidiary PT Semen Jawa used 24,000t of alternative raw materials in its cement production during the first quarter of 2024. These circular materials included bottom ash, fly ash and slag. This corresponds to 3% of its total raw material usage. Meanwhile, the producer co-processed 15,000t of alternative fuel (AF) during the quarter, representing a 20% AF substitution rate.

SCG Indonesia director Warit Jintanawan said that the developments "Not only enhance production efficiency, but also significantly reduces our carbon footprint. This is a testament to SCG's commitment to supporting Indonesia's climate goals, aiming to reduce greenhouse gas emissions by 32%, aligned with Enhanced National Determined Contributions."

India: Adani Group has announced plans to build a new cement plant, possibly at Godda, in Jharkhand’s Santhal Pargana Division. The Times of India newspaper has reported that producer recently established a 1.6GW power plant in Godda.

The group said “In keeping with our group’s expansion plans, we are conducting a feasibility study to set up a cement factory, most probably in Godda. A proposal will be sent to government soon. The proposed plant will further boost the economy of Godda and Santhal Pargana. The proposed plant will utilise fly ash from our existing power plant here as raw material. At present, the fly ash is being sent to the ACC cement plants in Jhikpani and Sindri.”

Switzerland: Carbon capture and storage (CCS) equipment developer and supplier Neustark says it plans to more than double the number of its CO₂ storage sites in Austria, France, Germany, Switzerland and the UK to 34 from 14. Neustark’s process turns mineralised captured CO₂ and existing mineral waste streams into useful limestone. Building materials producers lease Neustark’s storage sites to produce reduced-CO₂ alternatives such as recycled concrete. The sites currently have a total storage capacity of 5000t. Existing customers include Holcim.

Neustark CEO Johannes Tiefenthaler said “Neustark is scaling up rapidly, and we’re well on track to achieve our aim of permanently removing 1Mt of CO₂ by 2030. Our global goal is a series of reliable, region-specific CCS facilities that can be replicated anywhere, offering immediate sustainability benefits to local supply chains.”

Switzerland: McKinsey & Company and the World Economic Forum have recognised Holcim’s ECOCycle recycling technology for construction-demolition material (CDM) as a "Circularity Lighthouse in the Built Environment." ECOCycle technology can process 100% of CDM input into new building materials with 75% lower CO₂ emissions than traditional alternatives.

Chief sustainability officer Nollaig Forrest said “Circularity is a game changer to decarbonise buildings at scale. At Holcim we are operating over 100 ECOCycle recycling centres globally to drive circular construction. With our advanced recycling of CDM, we can already reduce the CO₂ footprint of cement by up to 40%. This is just the beginning; as we innovate and partner across the value chain to evolve building norms, we aim to accelerate the shift to circular construction in all metropolitan areas where we operate.”

EU: Cembureau has published its manifesto for industrial transformation for the European Parliament’s 2024-2029 legislative term. The manifesto calls for an ambitious EU agenda focused on the implementation of the European Green Deal along five key lines: 1 - turbo-charging EU and national funding and developing national industrial decarbonisation plans; 2 – Rolling out the EU Carbon Border Adjustment Mechanism (CBAM) to create a level playing field for EU industries; 3 – Building a pan-European CO₂ capture network and moving towards circular carbon feedstocks; 4 – Placing circular economy at the heart of industrial decarbonisation; 5 – Enhancing the EU buildings’ agenda to significantly cut emissions.

Cembureau said “The European cement industry was one of the first sectors to present a 2050 Carbon Neutrality Roadmap following the publication of the European Green Deal. The past five years were marked by the development of a comprehensive EU legislative framework and the launch of significant decarbonisation investments in our industry. Now, with the deployment of carbon-neutral cements within our grasp, we need to implement transformative measures on innovation, infrastructure, public acceptance, digitalisation and skills development.”

Germany: Switzerland-based CO₂ mineralisation technology developer Neustark says that it sees major potential for recycling concrete from construction and demolition waste (CDW) to produce carbon-negative products using its process in Germany. Neustark inaugurated its first German plant, and 12th overall, at Marzahn in Berlin in late 2023. Capital Online News has reported that the start-up estimates that Germany generates 60Mt/yr of CDW concrete, but only recycles 600,000t/yr (1%). This contrasts with international CDW concrete recycling rates as high as 15% in Switzerland and the US.

The start-up, founded at the Federal Institute of Technology Zurich in 2019, currently absorbs 10kg/t of CO₂ in its recycled materials, but aims to reach 60kg/t. Its investors include Holcim.

UAE: Holcim has launched and become a founding member of the SMI Circularity Task Force in collaboration with the Sustainable Markets Initiative (SMI) and others. The SMI Circularity Taskforce aims to accelerate the development of the global circular economy, in complement to Holcim’s goal of recycling 10Mt of construction-demolition materials (CDM) by 2025, and 20Mt in Europe alone by 2030. Holcim and its partners launched the task force at the COP28 climate conference in the UAE on 4 December 2023.

Holcim chair and chief executive officer Jan Jenisch said "With our world’s rising population and urbanisation, we need to build better with less to raise living standards for all while preserving nature. Circularity is a gamechanger to make this happen at scale. At Holcim we are driving circular construction across all metropolitan areas where we operate to build cities from cities, recycling CDM into new building solutions. I am excited to be joining like-minded organisations to accelerate the shift to a more circular future together."

Taiwan: Asia Cement Corporation tested its waste wind turbine blade processing capacities using 12t of blades earlier in November 2023. The cement producer had previously processed 9t of waste turbine blades for use in its plants up to the end of October 2023. Asia Cement Corporation says that the waste consists of fibre-reinforced plastic (FRP), which is 60% silicon dioxide, calcium oxide and aluminium oxide and 40% polyester. The polyester can replace fossil fuels as alternative fuel (AF) for cement plants, while the other chemical compounds can serve as supplementary cementitious materials (SCMs).