South Korea: SK Ecoplant is at the centre of an initiative in partnership with the city administration of Seoul to co-process 110,000t/yr of sewage sludge from the city as alternative fuel (AF) for cement production. AJU News has reported that the waste management company expects the sludge to fuel 150,000t/yr of local cement production under the initiative.
Seoul generates 200,000t/yr of sewage sludge.
Spain: Cementos Portland Valderrivas has partnered with the University of Seville to build a non-hazardous waste processing plant to produce refuse-derived fuel (RDF) at its Alcalá de Guadaira cement plant in Seville. The producer hopes that, when commissioned, the installation will help to 'significantly' reduce the plant's energy costs and CO2 emissions by substituting its RDF for petcoke in cement production.
Along with a renewal to the Alcalá de Guadaira plant's mining lease, the total cost of the project is Euro6m.
New Zealand: Fletcher Building subsidiary Golden Bay Cement has co-processed 80,000t of waste in production of its EcoSure reduced-CO2 general-purpose cement at its Golden Bay, Whangarei, cement plant. The plant has achieved a coal substitution rate of 50%. It has processed various waste streams, including 3 million used tyres. EcoSure cement generates CO2 emissions of 699kg/t of product, 20% less than its imported alternatives, according to Golden Bay Cement. Fletcher building CEO Nick Traber said that this figure is 'simply our starting point.' The company's next target is to achieve a 30% CO2 reduction by 2030.
Traber said "We needed to think outside the box, or rather the cement bag, to be more precise. The challenge was around what enhancements we could make to our manufacturing processes at our Golden Bay cement works in to improve the plant's sustainability. We quickly realised that consuming used tyres and wood waste as alternative fuels was a win-win. When we started with the idea in 2015, we were aiming to replace 15% of coal with end-of-life tyres. Fast forward to 2022, and our rate of coal substitution is now at 50%, which has obviously delivered further reductions in carbon emissions, as well as helping to offset increased coal costs."
Philippines: Republic Cement is supporting efforts to remove plastic pollution from the sea by co-processing the waste in its cement production. The Business Mirror newspaper has reported that the cement producer has partnered with plastic waste collector Pure Oceans to take delivery of shipments cleaned up from off the coasts of Batangas and Davao.
Republic Cement chief executive officer Roman Menz said "Republic Cement is proud to partner with organisations such as Pure Oceans. Their deep commitment towards safeguarding the environment, while making significant contributions to the Philippine plastic waste crisis, is an inspiration for us to continue doing what we do in order to make a tangible impact on our communities, towards building a greener and stronger republic."
Through its partnerships with local fishing communities, Pure Oceans diverted 1.93m bags of plastic waste over the three years prior to the start of October 2022.
