Grant: Alliance Grants

This project aims to enhance the sustainability of aluminum (Al) production in Canada, particularly in Quebec, where 90% of the Canadian aluminum is produced. Due to the utilization of electrical energy generated by the hydro power for the electrolytic production of aluminum, Canada has the lowest greenhouse gases (GHG) emitted from aluminum production; and it produces the greenest aluminum in the world. But, approximately 2 t eq. CO2/t of Al are still produced. The aluminum industry continues its efforts for a sustainable aluminum production. There are also other challenges such as the decreasing quality and availability of anode raw materials, namely the petroleum coke and the coal tar pitch. The present project proposes two innovative solution strategies: the partial replacement of petroleum coke by biocoke and the partial replacement of coal tar pitch by bio-pitch in anodes used in aluminum production, both obtained from biomass (wood by-products). Since the CO2 emitted by these materials counteract the CO2 absorbed by the plants during their lifetime, they do not contribute to GHG emissions. The wood by-products such as wood chips were used by the pulp and paper industry in large quantities. Due to the advancements in electronic media, their utilization is significantly reduced. Therefore, the wood industry is looking for ways to diversify its operations. These renewable alternatives, derived from underutilized wood by-products, not only address the challenges of waste disposal, but also contribute to the circular economy. By incorporating these sustainable materials into anodes, the project aims to significantly reduce GHG emissions associated with the aluminum production and the wood by-products. The anticipated outcomes include more environment-friendly aluminum and wood industries, contributing to Canada's efforts to combat climate change and fostering a green image on the global stage. The project aligns with NSERC's mission of endorsing the research projects where the innovation in natural sciences and engineering results in a positive impact on the society.