DSM (Schaffhausen, Switzerland) reported on Feb. 19 that it has demonstrated the use of co-processing in cement manufacturing as a viable route for composites recycling. The process, says DSM, generates valuable materials and helps to improve the ecological footprint of cement manufacturing.
Leading a project team with EuCIA and industry partners, DSM has confirmed that the carbon footprint of cement clinker manufacturing can be reduced up to 16 percent through the use of glass-reinforced composite regrind as process input. The recycling of composite regrind through co-processing into cement proves to be a reliable solution, says DSM, bringing substantial benefits in carbon footprint, economic viability and process volume availability.
DSM has been actively involved in the screening of different recycling technologies for composites. Leading a project team for the EuCIA Recycling and Sustainability Platform in 2012, DSM evaluated in detail the co-processing of composite regrind in cement manufacturing, and confirmed it to be the most sustainable composites recycling route today.
Together with Swiss cement manufacturer Holcim and its waste management unit Geocycle, DSM has performed a detailed Life Cycle Assessment (LCA) on the cement clinker manufacturing process and the use of composite regrind as alternative input material. The parties have been using the LCA4Waste tool that was jointly developed by the ETH Zürich, the Swiss Ministries of Environment and Energy, the association of Swiss waste treatment plants and Holcim1.
“Recycling of composite materials through co-processing is reality already today and in full compliance with the European Waste Framework Directive,” comments Thomas Wegman, marketing manager at DSM Composite Resins. “Therefore, it has been a great pleasure to work together with the EuCIA project team to demonstrate the positive impact on carbon emission reductions composite recycling can bring.”