From landfill to hydrogen: Techno-economic analysis of hybridized hydrogen production systems integrating biogas reforming and Power- to-Gas technologies

In the new hydrogen economy, bio-hydrogen derived from organic material can represent an opportunity to valorise current waste management systems. The present work deals with innovative systems for producing hydrogen from landfill gas combining Power-to-Gas plants and biogas reforming. To do so, Pressure Swing Adsorption (PSA) and Chemical Absorption (CA) have been assessed for biogas upgrading. Furthermore, both high-temperature electrolysis by SOECs (solid oxide electrolysis cell) and low-temperature electrolysis by PEM (proton exchange membrane) and Alkaline electrolysers are pre-sented. The simulation results are compared in terms of Levelized Cost of Hydrogen (LCOH) at stack price and after compression and storage. Assuming a capacity factor equal to 70%, the potential hydrogen production rate in such hybrid configurations ranges between 26 and 28 kgH2/h. Furthermore, the LCOH turns out to be in a range between 1.9 and 3.3 euro/kgH2. Considering 2030 forecast, LCOH below 2 euro/kgH2 at stack is feasible. (c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.