SOMMER will develop and demonstrate a novel carbon-neutral pathway for syngas production by integrating solar energy directly into a catalytic membrane reactor for the splitting of H2O and CO2 (e.g. captured from high carbon emitting industries or by direct air capture). This will allow SOMMER to overcome the fossil-based energy requirements for the production of syngas and to consume CO2 instead of natural gas as feedstock. Syngas, the mixture of H2 and CO, is a crucial intermediate product in the chemical industry. Thus, SOMMER will consider the entire value-chain from CO2 provision from a cement plant to syngas formation and further processing syngas to valuable and shippable products such as DME or methanol. The core of the SOMMER technology lies in the optimized energy integration of an emerging single-step CO2 and H2O thermochemical conversion process supported by highly selective catalysts and a dual-phase composite membrane, and a concentrated solar-thermal plant to supply the thermal energy demand. The main outcomes of SOMMER involve the experimental demonstration and evaluation of the innovative solar-powered membrane technology, and the development of high performance and cost-effective membranes as key components, thereby bringing the technology to the next level. SOMMER will advance membrane manufacturing via slip-casting, as a more mature approach, and via additive manufacturing to optimize the effective membrane surface area in the reactor. The concept is expected to have the future advantage of prolonged and flexible operation by switching between two operational Cases: I) Purely solar approach at 1500 °C and II) a biogas-supported approach at 900 °C. In addition, the identification of technological, ecological and economical potential for a flexible and highly efficient solar syngas production will contribute to the development of a detailed roadmap and provide the basis for the pre-commercialization through follow-up R&D development activities.

To tackle its (critical) raw material dependency, Europe needs comprehensive strategies based on sustainable primary mining, substitution and recycling. Freshly produced flows and stocks of landfilled industrial residues such as mine tailings, non-ferrous slag and bauxite residue (BR) can provide major amounts of critical metals and, concurrently, minerals for low-carbon building materials. The European Training Network for Zero-Waste Valorisation of Bauxite Residue (REDMUD) therefore targets the vast streams of new and stockpiled BR in the EU-28. BR contains several critical metals, is associated with a substantial management cost, whereas spills have led to major environmental incidents, including the Ajka disaster in Hungary. To date, zero-waste valorisation of BR is not occurring yet. The creation of a zero-waste BR valorisation industry in Europe urgently requires skilled scientists and engineers, who can tackle the barriers to develop fully closed-loop environmentally-friendly recovery flow sheets. REDMUD trains 15 researchers in the S/T of bauxite residue valorisation, with emphasis on the recovery of Fe, Al, Ti and rare earths (incl. Sc) while valorising the residuals into building materials. An intersectoral and interdisciplinary collaboration of EU-leading institutes and scientists has been established, which covers the full value chain, from BR to recovered metals and new building materials. Research challenges include the development of efficient extraction of Fe, Al, Ti and rare earths (incl. Sc) from distinct (NORM classified) BRs and the preparation of new building materials with higher than usual Fe content. By training the researchers in pyro-, hydro- and ionometallurgy, electrolysis, rare-earth extraction and separation technology, inorganic polymer and cement chemistry, Life Cycle Assessment (LCA), NORM aspects and characterisation, they become the much needed scientists and engineers for the growing European critical raw materials industry.

CO2 from the flue gases of a rotary kiln in a cement industry (CO2: 25 vol%) will be used for the production of value-added chemicals (acid additives for cement formulations) and materials (CaCO3 nanoparticles to be used as concrete fillers). A circular-economy-approach is enabled: the CO2 produced by cement manufacturing is re-used in a significant part within the plant itself to produce better cement-related products entailing less energy intensity and related CO2 emissions by a quadratic effect. Ionic liquids (bare or amine-functionalised) will be the key technological playground for the efficient and cost-effective (20% accounting for direct and indirect means) and the good market potential of their products at a mass production scale. The first two years of the project will be focused on the development of key functional materials and process units at TRL 4-5, the third year on the assembly of single-process lines certified at TRL 5-6, and the fourth year on the assembly and testing at a cement manufacturing site (TITAN) of the TRL 6 integrated CO2 process.

Today, 19th and 20th c. modern period buildings are the trademark of numerous European cities, forming a great part of EU Built Heritage, reflecting and shaping the identity of our local, national and multinational societies. Considering that historic buildings are ineffective in terms of energy consumption for heating and cooling, among the biggest restoration and renovation challenges is to enhance the energy performance of historic buildings. SINCERE aims to elucidate the values of Built Heritage and provide the tools for optimizing the carbon footprint and energy performance of historic buildings, towards the requirements of net-zero-carbon-buildings, by utilizing innovative, sustainable, and cost-effective restoration materials and practices, energy harvesting technologies, ICT tools and socially innovative approaches. SINCERE adapts a multi-scale concept, from material-, to building-, to neighbourhood- to city-scale, applied on the three main parts of buildings: structure, external envelope (opaque), and transparent parts, implemented at different time-frames, in order to provide decision making tools to the stakeholders involved in the process, considering the full-service life of the buildings, including restoration, operation, monitoring and maintenance phases. Energy performance in terms of retrofitting materials and solutions will be optimized according to the buildings’ unique structural, architectural, functional and materials characteristics, their environmental setup, as well as local future climate change scenarios. SINCERE will provide a palette portfolio of sustainable restoration options that will be evaluated by H-BIM/H-DT tools in order to enable the selection of optimum solutions and the planning of necessary adaptation actions. SINCERE will also focus on raising awareness and empowering Europeans to promote the concept of preservation CH buildings by disseminating the obtained results through national and international scale activities.

CO2 capture process represents typically about 70% of the total cost of the CCS chain. Power plants that capture CO2 today use an old technology whereby flue gases are bubbled through organic amines in water, where the CO2 binds to amines. The liquid is then heated to 120-150ºC to release the gas, after which the liquids are reused. The entire process is expensive and inefficient: it consumes about 30 percent of the power generated. One of the most promising technologies for CO2 capture is based on the adsorption process using solid sorbents, with the most important advantage being the potential energy penalty reduction for regeneration of the material compared to liquid absorption . Nevertheless, the challenge in this application remains the same, namely to intensify the production of a CO2 stream in terms of adsorption/desorption rates and energy use while preserving the textural characteristics of the sorbents. The key objectives of the CARMOF project are (1) to build a full demonstrator of a new energy and cost-competitive dry separation process for post-combustion CO2 capture based on hybrid porous Metal organic frameworks (MOFs) & Carbon Nanotubes (CNTs) (2) to design customized, high packed density & low pressure drop structures based on 3D printing technologies containing hybrid MOF/CNT to be used in CO2 capture system based on fluidized beds. The morphology of the printed absorber will be designed for the specific gas composition of each of the selected industries (ceramic, petrol products and steel) and (3) to optimize the CO2 desorption process by means of Joule effect combined with a vacuum temperature/preassure swing adsorption (VTSA or VPSA)/membrane technology that will surpass the efficiency of the conventional heating procedures