Green Hydrogen Production from Biogas or Landfill Gas by Steam Reforming or Dry Reforming: Specific Production and Energy Requirements
Biogas is a crucial renewable energy source for green hydrogen (H<sub>2</sub>) production, reducing greenhouse gas emissions and serving as a carbon-free energy carrier with higher specific energy than traditional fuels. Currently, methane reforming dominates H<sub>2</sub> pr...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-05-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/18/10/2631 |
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| Summary: | Biogas is a crucial renewable energy source for green hydrogen (H<sub>2</sub>) production, reducing greenhouse gas emissions and serving as a carbon-free energy carrier with higher specific energy than traditional fuels. Currently, methane reforming dominates H<sub>2</sub> production to meet growing global demand, with biogas/landfill gas (LFG) reform offering a promising alternative. This study provides a comprehensive simulation-based evaluation of Steam Methane Reforming (SMR) and Dry Methane Reforming (DMR) of biogas/LFG, using Aspen Plus. Simulations were conducted under varying operating conditions, including steam-to-carbon (S/C) for SMR and steam-to-carbon monoxide (S/CO) ratios for DMR, reforming temperatures, pressures, and LFG compositions, to optimize H<sub>2</sub> yield and process efficiency. The comparative study showed that SMR attains higher specific H<sub>2</sub> yields (0.14–0.19 kgH<sub>2</sub>/Nm<sup>3</sup>), with specific energy consumption between 0.048 and 0.075 MWh/kg of H<sub>2</sub>, especially at increased S/C ratios. DMR produces less H<sub>2</sub> than SMR (0.104–0.136 kg H<sub>2</sub>/Nm<sup>3</sup>) and requires higher energy inputs (0.072–0.079 MWh/kg H<sub>2</sub>), making it less efficient. Both processes require an additional 1.4–2.1 Nm<sup>3</sup> of biogas/LFG per Nm<sup>3</sup> of feed for energy. These findings provide key insights for improving biogas-based H<sub>2</sub> production for sustainable energy, with future work focusing on techno–economic and environmental assessments to evaluate its feasibility, scalability, and industrial application. |
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| ISSN: | 1996-1073 |