Enhancement of gasification in oxyfuel BECCS cycles employing a direct recycling CO2 utilisation process

•Exhaust recycling enhances the thermodynamics of gasification in integrated BECCS cycles.•Gasification and combustion are thermodynamically coupled through the recycled exhaust.•Both conversion and non-conversion CO2 utilisation features are observed.•Gasification enhancement is thermodynamically limited under certain operating conditions.•Model performance is sensitive to operational conditions and techniques assumed.