A scenario was set up by exchanging the background processes for the production of important infrastructure materials like aluminum, copper, steel, and concrete with future processes that are less resource intensive, less carbon intensive and include higher recycling rates (e.g., electric arc furnaces for steel production). The system boundary includes all relevant processes from cradle to gate. Electricity is supplied by offshore wind turbines. Investigated process chains comprise the following technologies: CO 2 capture from an industrial point-source or from the atmosphere through direct air capture (DAC) alkaline water electrolysis for hydrogen production methanol synthesis methanol-to-olefins and methanol-to-aromatics synthesis including aromatics separation. Here, we present a life cycle assessment (LCA) on a cradle-to-gate basis for the production of the following large volume organic chemicals: methanol, ethylene, propylene, benzene, toluene, and mixed xylenes. The combination of carbon capture and utilization (CCU) and water electrolysis technologies can be used for the production of basic chemicals from carbon dioxide (CO 2) and hydrogen. Institute for Energy- and Environmental Research, Heidelberg, Germany.Marian Rosental * Thomas Fröhlich Axel Liebich
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