Editorial by Magnus Bach, Vice President of Business Development of Atoco, published on the Cement Optimized journal on June 13th, 2025.
Cement Optimized: Decarbonizing Cement Production with Advanced Carbon Capture Technologies
The cement industry is facing a major challenge: how to drastically reduce CO2 emissions without sacrificing economic viability. Learn how we are helping the industry to tackle this challenge with our PCC technology in a Cement Optimized Article by Magnus Bach, VP of Business Development at Atoco.
Cement forms the foundation of modern civilization, yet it comes with a heavy environmental cost. Cement production is responsible for approximately 2,420 million tonnes of CO₂ emissions globally each year — nearly 8% of all human-caused emissions — and about 69 million tonnes annually in the U.S. alone. For every kilogram of cement produced, nearly an equivalent amount of CO₂ is emitted.
This presents the cement industry with one of its greatest challenges yet: how to drastically reduce emissions without sacrificing economic viability.
Understanding the Roots of Cement Emissions
More than 85% of the life cycle greenhouse gas emissions from cement production arise from two principal sources. Around 60% comes from the calcination process — the chemical decomposition of limestone (CaCO₃) into lime (CaO) and carbon dioxide. The remaining 40% is attributed to the combustion of fuels like coal and natural gas needed to achieve kiln temperatures exceeding 1450°C.
Other emissions stem from electricity use and onsite fuel consumption, but the primary emissions are deeply embedded in the chemistry and energy demands of cement production itself.
Decarbonizing the sector, therefore, requires more than a switch to renewable energy; it demands a way to capture emissions that are chemically unavoidable.
The Complex Reality of Carbon Capture in Cement
Despite growing interest, deploying carbon capture at cement plants remains a major technical and economic challenge. Cement facilities operate on tight margins and high energy requirements, leaving little room for costly, disruptive retrofits.
Furthermore, the very nature of cement production — high-volume CO₂ streams at elevated temperatures, often mixed with moisture and impurities — complicates conventional carbon capture methods. Technologies must not only efficiently separate CO₂ but also withstand harsh process conditions without excessive additional energy inputs.
Logistical issues compound the challenge: proximity to carbon storage sites, availability of transport infrastructure, and the need to retrofit plants originally never designed for carbon capture all contribute to high costs and deployment barriers.
To better understand the role of material innovation in this context, it’s important to view carbon capture as part of the broader CCUS (Carbon Capture, Utilization, and Storage) value chain. Of all the stages — capture, compression, transport, utilization, and storage — capture alone accounts for up to 70% of the total cost. This makes improving the efficiency and economics of the capture step absolutely critical, especially for cement plants that operate under strict cost constraints. At the heart of this step lies a key enabler: the sorbent material used to selectively extract CO₂ from complex gas mixtures. Choosing the right sorbent can dramatically reduce energy use, lower operational costs, and improve overall system viability.
A Transformative Approach: Carbon Capture with Nano-Engineered Reticular Materials
Emerging carbon capture systems based on nano-engineered reticular materials offer a truly transformative solution to the decarbonization challenges facing the cement industry.
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