Is biomethane steam reforming a good method to make net zero hydrogen?
Biomethane steam reforming can be considered a good method for producing net zero or low-carbon hydrogen, as long as the biomethane is derived from sustainable and renewable sources. Biomethane is a methane-rich gas produced by anaerobic digestion or gasification of organic matter, such as agricultural waste, sewage sludge, and organic municipal waste.
When biomethane is used in steam methane reforming (SMR), it reacts with steam at high temperatures to produce hydrogen and carbon dioxide. Since the carbon dioxide generated during this process originates from renewable and biogenic sources, the overall carbon footprint is significantly lower compared to the SMR process using fossil-based natural gas.
To achieve net zero hydrogen production, the carbon dioxide emissions from the biomethane steam reforming process should be captured and stored or utilized through carbon capture and storage (CCS) or carbon capture and utilization (CCU) technologies. This ensures that the carbon emissions are not released into the atmosphere, further reducing the environmental impact.
In summary, biomethane steam reforming can be a good method for producing net zero hydrogen when combined with CCS or CCU technologies and using sustainably sourced biomethane. However, it is important to consider factors such as the availability of sustainable biomass feedstocks, the efficiency of the process, and the costs associated with implementing these technologies when evaluating this approach's feasibility.