Energy conversion performance of black liquor gasification to hydrogen production using direct causticization with CO2 capture

► Energy conversion performance of black liquor to hydrogen using dry gasification. ► Direct causticization eliminates energy-intensive lime kiln. ► A large potential of H2 production at significant energy ratio (0.74). ► About 867 000 tonnes of CO2 abatement per year is estimated. ► Significant fossil fuel replacement in transport sector.