Displaying items by tag: Emissions

UK: Holcim subsidiary Aggregate Industries has invested in a new monitoring system from Envirosuite for its Cauldon cement plant in Staffordshire. Called EVS Omnis, the cloud-based environmental management software will collate complex environmental information from surrounding sites outside the plant to facilitate proactive monitoring and management of its impacts. The producer expects to commission the system later in 2022.

Sustainability director Kirstin McCarthy said “Understanding the environment we operate in and the impact we’re having is integral to our business strategy and our commitment to building progress towards a more sustainable construction industry. We know that noise and dust can have an impact on surrounding communities, which is why we’re extremely proud to become the first cement plant in the world to commit to using a complete monitoring solution. EVS Omnis will allow us to continuously monitor at key community locations, 365 days a year. This will help us to not only better understand our operations within the local community but also give us insights into our processes to proactively manage them.”

UK: Karbonite UK has developed a new supplementary cementitious material consisting of mineral feedstock, geopolymers and waste biomass. The process also involves CO₂ sequestration and liquid-infused CO₂ absorption within the mineral structure. The material, called Karbonite, is activated at 750 – 850°C, releasing water, which is captured for recycling. Its CO2 emissions are 2.7kg/t, according to Karbonite UK. The developer says that Karbonite ground with 50% clinker yields a cement of equal compressive strength to ordinary Portland cement (OPC).

Karbonite UK is currently preparing a final report on the product for a major cement producer.

Managing director Rajeev Sood said “Karbonite offers a wealth of potential to an industry targeting net zero. We are excited to talk to cement and concrete producers about how they could integrate Karbonite technology into their existing process.”

Austria: RHI Magnesita’s customers can now rely on Environmental Indicators on all of its products’ Technical Data Sheets to check their CO₂ emissions. The indicators state the CO₂ equivalent emissions per tonne of each product. The supplier calculated the figures in line with ISO standards under on-going external supervision.

Chief sustainability officer Gustavo Franco said “One of RHI Magnesita’s main targets is to significantly reduce emissions over the next few decades, with the long-term goal of achieving net-zero operations in all areas of the company. It is clear that a solid basis for sustainable decisions and developments can only be achieved by creating a valid audited database.”

World: The total volume of CO₂ emissions released during cement production have more than doubled over the past 20 years, a study has revealed. In 2021 CO₂ emissions from the manufacture of cement came to 2.6Bnt, more than 7% of all emissions, according to Robbie Andrew, a greenhouse gas emissions scientist at the CICERO Center for Climate Research in Norway and the Global Carbon Project. In 2001 the CO₂ emissions from cement production were just 1.2Bnt.

Driven by China, the global cement sector’s CO₂ emissions have now more than tripled in the 30 years since 1992, recently increasing by 2.6% a year. The drivers are not just that more cement is being made, but that the CO₂ intensity of production has risen by 9.2% per tonne, according to the International Energy Agency. This is due to a switch from production in mature markets to developing ones, with China again a dominant factor.

Pakistan: Fauji Cement says that its sustainability initiatives across its three cement plants reduced CO₂ emissions by 215,000t in the 2022 financial year. The Pakistan Today newspaper has reported that clinker factor reduction in reduced-CO₂ products such as Askari Green cement and Pamir cement eliminated 89,900t-worth of emissions, 42% of total reductions. Waste heat recovery (WHR) plants eliminated 79,400t of emissions (37%), solar power plants eliminated 31,500t (15%), alternative fuel (AF) substitution eliminated 8030t (3.5%) and reforestation eliminated 600t (2.5%).

Belgium/France: Ciments Calcia plans to transition 60% of its truck transport of cement in Belgium and France to rail. The company says that the shift will eliminate 5% of its CO₂ emissions. 400 rail cars currently distribute cement from Ciments Calcia’s 10 production sites. The producer said that the planned increase became possible due to logistics solutions developer Everysens’ transport digitisation software.

US: The US Department of Energy has granted Solidia Technologies US$2.1m in funding for the development and testing of carbonation methods for its Solidia Cement. Solidia will research synthetic supplementary cementitious materials (SCMs) production methods using direct CO₂ capture and utilisation.

CEO Russell Hill said “We are proud to partner with the US Department of Energy to continue innovating and ultimately deliver on our mission to provide commercially viable decarbonisation technologies and sustainable solutions for the global construction and building materials industries. The funding will advance our carbon capture, utilisation and storage (CCUS) technologies and synthetic SCMs that can be easily integrated into Portland cement-based concrete formulations, offering manufacturers a solution that is sustainable environmentally and economically.”

UK: Mannok recorded sales of Euro270m in 2021, up by 16% year-on-year from Euro233m in 2020. The company’s earnings before interest, taxation, depreciation and amortisation (EBITDA) fell by 17% to Euro25.8m from Euro31.1m. The group attributed this to substantial cost absorption beginning in mid-2021. Energy prices rose by 66% year-on-year, while the cost of carbon emissions trading scheme (ETS) credits more than doubled to Euro80/t at the end of the year.

Mannok said that demand for its products remains resilient, supported by stronger cost recovery. It added that a levelling out in energy prices has driven stronger profitability in the first quarter and April of 2022.

Switzerland: Jura Cement has commissioned a regenerative thermal oxidation system at its Wildegg plant. The air pollution control system, supplied by Dürr, was installed to meet anticipated lower gas emission limits for carbon monoxide, hydrocarbons, and ammonia (NH3).

Pakistan: Lucky Cement plans to install a 34MW solar power plant at its Pezu power plant in Khyber Pakhtunkhwa. The Balochistan Times newspaper has reported that the 48GWh/yr installation will be equipped with a 5.59MWh Reflex energy storage system. Both the power plant and energy system will be the country’s largest when commissioned. Fossil fuel generation will remain online, but be shut down in the daytime, saving 26,600t/yr of CO₂ emissions.