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UltraTech Cement Limited, India’s largest cement and ready-mix concrete (RMC) company, announced the signing of a collaboration agreement with the Institute for Carbon Management (ICM) at the University of California, Los Angeles (UCLA) to pilot a groundbreaking new technology The Zero Carbon Lime (ZeroCAL) developed by ICM that can significantly reduce carbon dioxide emissions from cement production. ICM, in partnership with UltraTech, will build a first-of-a-kind demonstration plant for the technology at one of UltraTech’s integrated cement manufacturing units.

The Zero Carbon Lime (ZeroCAL) process, developed by ICM researchers, can eliminate nearly 98% of carbon dioxide emissions associated with limestone decomposition in cement manufacturing. UltraTech will be the first company globally to implement the ZeroCAL process at scale through a demonstration plant that will produce several metric tons of zero-carbon lime per day. UltraTech’s partnership with UCLA aligns with its broader sustainability goals and its focus on developing and adopting innovative technologies to decarbonise its operations.

"UltraTech is fully committed to realising its Net Zero Goal by 2050. As an industry leader UltraTech is constantly exploring partnerships to overcome the technological barriers to decarbonise cement manufacturing.” said Mr. K C Jhanwar, Managing Director at UltraTech. "We are excited to collaborate with UCLA on this groundbreaking project. Partnerships like these, which place an emphasis on developing and deploying new and emerging technologies, will be a key enabler in our sector's efforts to accelerate decarbonisation and deliver carbon neutral concrete by 2050,” he added.

“The ZeroCAL approach is a powerful solution to eliminate carbon emissions associated with the process of cement production within the existing industrial paradigm of Ordinary Portland Cement (OPC) clinker production and without a need for carbon capture and storage,” said Professor Gaurav Sant, ICM director and the study’s corresponding author and the Pritzker Professor of Sustainability at the UCLA Samueli School of Engineering. “It effectively eliminates the carbon dioxide emissions resulting from limestone’s decomposition while providing clean hydrogen and oxygen to heat the cement kiln,” he added.

To accelerate its decarbonisation efforts, UltraTech is collaborating with technology startups to explore the use of emerging decarbonisation technologies including kiln electrification and carbon capture & storage.

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