This feasibility project addresses the issues of climate change and the circular economy that are of fundamental importance to society. Carbon8 Systems (C8S) has developed a CO2 capture and utilisation process known as Accelerated Carbonation Technology, which can be used to treat industrial wastes and manufacture products for the construction industry, thereby diverting waste from landfill, permanently capturing CO2 and reducing the need for the quarrying of natural aggregate.
C8S has licensed the technology in the UK for the treatment of Air Pollution Control Residues from Energy from Waste plants using pure CO2 delivered to site in a tanker, but has recently
developed a version of the technology that can be integrated into existing industrial processes by utilising the CO2 directly captured from the flue stack and treating the residues generated at the same site. The market for this version has been established for a number of waste streams. The environmental legislation around the reclamation of wastes as products, however, is perceived as a significant barrier to the use of the end-products of the process.
The objectives of this feasibility study were:
1. To achieve a clearer understanding of the market and legislation surrounding the aggregate products;
2. produce a specification for the products to gain the optimum value in the construction market and
3. undertake a preliminary investigation of methods to enhance the value of the end products and gain regulatory approval.