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Life-cycle Assessment of Hydrogen Produced through Chemical Looping Dry Reforming of Biogas

Abstract

Chemical looping dry reforming of methane (CLDRM) using perovskites as a catalyst is considered a promising option for producing hydrogen from biogas. In this work, the life-cycle performance of a system compiling a CLDRM unit paired with a water gas shift unit, a pressure swing adsorption unit, and a combined cycle scheme to provide steam and electricity was assessed. The main data needed to reflect the behavior of the reforming reaction was obtained experimentally and implemented in an Aspen Plus® simulation. Inventory data was obtained through process simulation and used to assess the environmental performance of the process in terms of carbon footprint, acidification, freshwater eutrophication, ozone depletion, photochemical ozone formation, and depletion of minerals and metals. Overall, the environmental viability of the production of green hydrogen from biogas was found to be heavily dependent on the biogas leakage in anaerobic digestion plants. The CLDRM system was benchmarked against a conventional DRM implementation for the same feedstock. While the conventional DRM plant environmentally outperformed the perovskite-based CLDRM, the latter might present advantages from an implementation point of view.

Funding source: The authors would like to thank Prof. Patricia Pizarro (IMDEA Energy) and Prof. Jos´e María Escola (Rey Juan Carlos University) for valuable scientific exchange. This work was carried out within the framework of: Grant PID2021-124705OB-I00 (HYWARE), funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe”; and Grant PRE2022-101596, funded by MCIN/AEI/10.13039/ 501100011033 and by FSE+.
Related subjects: Production & Supply Chain
Countries: Spain
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/content/journal5990
2024-06-27
2024-10-06
/content/journal5990
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