Sustainable Brewing Practices: Reducing CO2 Emissions through Catalytic Pyrolysis

Research conducted at Hanyang University in Seoul, South Korea, has proposed a sustainable platform for valorising spent brewer grain to reduce the carbon footprint of the brewing industry. The study utilized CO2 in the pyrolysis of brewer grain to enhance energy recovery in the form of pyrolytic gas while reducing carbon emissions. The research demonstrated that valorising brewer grain through co-catalysed pyrolysis provides a viable and economically feasible pathway for achieving carbon neutrality in the brewing sector.

Key Takeaways:

• The brewing industry confronts significant environmental challenges due to substantial CO2 emissions and high energy consumption during the brewing process.
• The study proposes a sustainable platform for valorising spent brewer grain to reduce its carbon footprint, utilizing CO2 in the pyrolysis process.
• The research demonstrated that catalytic pyrolysis can enhance syngas production and reduce CO2 emissions associated with brewing.
• Specifically, the CO2 emissions for producing 1 L of beer were reduced from 202.7 gin non-catalytic pyrolysis to 11.5 gin the CO2-catalysed pyrolysis.
• Pyrolytic gases (H2, CO, and CH4) produced through this process can satisfy the energy demands of the brewing industry, reducing reliance on fossil fuels.
• The study provides a model for sustainable brewing practices by addressing energy recovery and carbon reduction.

Statistics:

• CO2 emissions reduced from 202.7 gin non-catalytic pyrolysis to 11.5 gin the CO2-catalysed pyrolysis for producing 1 L of beer.
• Pyrolytic gases (H2, CO, and CH4) produced through co-catalysed pyrolysis can satisfy 100% of the energy demands of the brewing industry.
• The brewing industry releases 202.7 gin of CO2 emissions per 1 L of beer produced through non-catalytic pyrolysis.
• By implementing co-catalysed pyrolysis, the net CO2 emissions associated with brewing can be significantly reduced.

Sources:

• "Reducing Co2 Emissions In Brewing Industry Through Sustainable Valorisation of Brewer's Spent Grain Using Co2-assisted Pyrolysis." Journal of Analytical and Applied Pyrolysis. 2025;190.
• VerticalNews. "Current study results on Sustainability Research have been published." September 1, 2025.