Advancing a Low Carbon Built Environment With Inherent Utilization of Waste Concrete and CO2 via Integrated Electrochemical, Chemical and Biological Routes (ADVENT)
Cornell University will develop a scalable technology to co-utilize waste construction and demolition (C&D) residues and CO2 to produce sustainable construction materials via several closely integrated innovations in cement production. The team will: (1) replace conventional fossil-driven high temperature processes with electrochemical low-temperature modular processes, (2) capture and reuse CO2 emissions to produce calcium carbonate (CaCO3) by using the inorganic components of C&D materials, (3) harness hydrogen and CaCO3 from organic constituents of C&D materials, and (4) manufacture reagents such as citrate and glycinate, useful for capturing CO2 and dissolving waste construction materials, by electromicrobially fixing CO2 and nitrogen.
If successful, this project will be a competitive and transformative technology that replaces thermally intensive processes for producing construction materials with integrated electrochemical and chemical approaches that co-utilize CO2 emissions and construction and demolition materials. It will: