Sewage sludge generated biogas is increasingly being upgraded to biomethane for export into the 'natural gas' network. Upgrade by membrane technology is currently a frequently selected technology (partly due to low methane slip in comparison to water based separation systems). Biogas membrane separation also creates a concentrated (~99%) CO2 stream, with suppliers offering a CO2 liquification and storage technology options. How could this CO2 stream contribute to the UK & European CCUS ambitions?

This presentation looks to identify:

• Magnitude of CO2 from sewage sludge AD potential for carbon capture and storage, against UK / European government level targets / ambitions
• CO2 capture and seabed storage sequestration opportunities in development.
• Other CO2 uses other than seabed storage, e.g. e-methanol production for sustainable fuels, Algae carbon capture and utilisation
• Potential Financial benefits, (inc. use of the AMP8 GHG ODI. £/tCO2)
• Costs and carbon impact of implementation and CO2 transport (if required) (e.g. dependant on site location).
• Comparison of £/tCO2e of biogas separated CO2 capture and storage verses reduction of other greenhouse gas emissions (e.g. cost of methane emission reductions in £/tCO2e) 
• Technology specifications required to allow biogas upgrading asset "future-proofing" for CO2 capture.