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The project goal is to optimise CCU technology (CO2-mineralisation) and relevant objectives. These include: UPSTREAM superior CO2-capture (WP1) and brine-upgrade (WP2) via novel membrane technology; DOWNSTREAM, improved wastewater treatment (WP2) and optimised carbonation reactions and use in concrete (WP3). ‘Proof-of-practice’ is in-hand @ TRL 4/5 for CO2-mineralisation and the successful formation and testing of carbonate-filled concretes, following standards (ISO1920-4). The project expects to achieve TRL 6/7 through raising reaction efficacy via superior feedstock robustness, together with wastewater remediation, as well as optimisation of carbonate products and their industrial uses. Work includes helping develop EU policy around underdeveloped aspects of CCU technology (WP4). Industrial partners provide sizeable contributions: desalination equipment, access to brine and salt bitterns (~2-300 kilo t/yr), concrete formation and testing and custom reactor manufacture. CONSORTIUM: Academics: Sapienza U, Italy (Coord. Dr.K.Viviana Tian), CERTH, Greece (Dr. A.Asimakopoulou) and Ben-Gurion, Israel, (Dr. N.Teschner). Industry: SOSalt, Italy (Prof. G.d’Ali Staiti), Alfa Laval, Denmark (Mr. J.Phair), Conselab, Italy (Mr. M.Toni), Modern Age Plastics, Canada (Mrs.N.Sheridan). Collaborators: QM U. London, UK (Dr. G.Chass), Utrecht U., Netherlands (Dr. M.Wolthers) and U.British Columbia, Canada (Prof. R.Y.Yada). Gender equality: 1/2 partners are female-led including the coordinator.