India: ACC and Ambuja Cements' Geoclean has launched two new facilities for sustainable waste management. The Ambuja Marwar pre-processing and co-processing facility in Rajasthan can convert 220,000t/yr of refuse into alternative fuel, while the ACC Jamul co-processing facility will process an additional 120,000t/yr.

The Ambuja Marwar facility, in collaboration with the Ambuja Marwar Farmer Producer Organisation, aims to source 50,000t/yr of agricultural waste from local farmers. This initiative will also increase the plant's thermal substitution rate to 15%. Similarly, the ACC Jamul facility will enhance its thermal substitution rate to 10%, reducing CO₂ emissions through the co-processing of waste in the cement kiln.

UK: Heidelberg Materials' Ribblesdale cement works in Lancashire is participating in a pioneering study to assess the use of ammonia as a hydrogen source for fuelling cement kilns. This 12-month feasibility project, conducted in collaboration with engineering consultants Stopford and Cranfield University, has received funding from Innovate UK through its UK Research and Innovation fund.

The research aims to investigate ammonia as a potentially energy-dense, cost-effective hydrogen carrier for cement manufacturing and other industries. Building on Ribblesdale's successful demonstration of using hydrogen in a net-zero fuel mix for a cement kiln, the new project will focus on the most efficient methods for on-site 'cracking' of ammonia to release hydrogen as kiln fuel.

Marian Garfield, Sustainability Director at Heidelberg Materials UK, said “We have already proved the success of using hydrogen as part of a lower carbon fuel mix, but its storage and transportation are currently technically challenging and expensive. Ammonia could offer a more viable hydrogen source that enhances fuel usage and reduces CO₂ emissions. If successful, this project will pave the way for further investigations into the commercial viability of using ammonia as a hydrogen carrier for combustion in cement production and beyond.”

France: Fives FCB has partnered with Holcim to decarbonise its cement production processes. Fives conducted successful hydrogen tests at the La Malle site in France, achieving over 50% hydrogen substitution in cement production. This result also enabled a significant increase in the use of alternative fuels while still maintaining cement quality. The group has also developed a digital model to tailor this process to each cement plant's unique requirements.

Costa Rica: Holcim subsidiary Geocycle has commissioned its new US$15m Agua Caliente de Cartago waste processing plant. The plant will process 75,000t/yr of municipal solid waste into refuse-derived fuel for use at Holcim Costa Rica’s 1.1Mt/yr Agua Caliente de Cartago cement plant.

Holcim Costa Rica CEO Andrea Lara said "Accelerating sustainable growth means driving innovative solutions that allow us to decarbonise cities, and today Costa Rica is a leader in the region through this project.”