Biogas conversion to green hydrogen by catalytic sorption enhanced steam reforming (SESR): The feasibility study

• Main Authors: García Fernández, Roberto, Capa Tamargo, Alma, Chen D., Rubiera González, Fernando, Pevida García, Covadonga, Gil Matellanes, María Victoria
• Other Authors: Ministerio de Ciencia e Innovación (España), Principado de Asturias
• Format: Conference Object
• Language: English
• Published: ETA-Florence Energie Rinnovabili‏ 2021
• Subjects: Biogas; Catalytic conversion; CO2 capture; Landfill gas; Hydrogen; Reforming; Arctic; Norway
• Online Access: http://hdl.handle.net/10261/265884; https://doi.org/10.13039/501100004837; https://doi.org/10.13039/100011941

Clean energy technologies will play a decisive role in power generation and energy mix short-term scenarios to mitigate the environmental problems derived from increasing global energy consumption. In this context, green hydrogen will foreseeably become a clean and environmentally friendly energy carrier for sustainable development. Biogas is a valuable source of renewable energy and a secondary energy carrier produced from biodegradable organic materials via anaerobic digestion. It is mainly composed of CH4 (35-75 vol.%) and CO2 (15-55 vol.%). The present work proposes utilizing biogas for green hydrogen production by the sorption enhanced steam reforming (SESR) process. SESR has recently emerged as a novel promising method to improve hydrogen production efficiency. It combines, in a single unit, hydrogen production and carbon dioxide separation by a solid CO2 acceptor. The objective of the present work is to prove the feasibility of the SESR of biogas to produce high-purity and highyield hydrogen. To this aim, a comprehensive assessment of the process was carried out by evaluating the effect of the operating conditions on biogas SESR to optimize hydrogen production The authors thank Franefoss Miljøkalk A/S (Norway) for supplying Arctic dolomite. This work was carried out with financial support from the Spanish MICINN (Project ENE2017-83530-R) and the Gobierno del Principado de Asturias (PCTI, Ref. IDI/2018/000115), both co-financed by the European Regional Development Fund (ERDF). M.V. Gil acknowledges support from a Ramón y Cajal grant (RYC-2017-21937) of the Spanish Government, cofinanced by the European Social Fund (ESF). A. Capa acknowledges a fellowship awarded by the Spanish MICINN (FPI program, PRE2018-083634), co-financed by the European Social Fund (ESF) Peer reviewed