Production of hydrogen-rich syngas from steam gasification of blend of biosolids and wood using a dual fluidised bed gasifier

► Syngas produced from steam gasification of pure biosolids had higher content of H2 compared with that from pure wood. ► Syngas, H2 yields and cold gas efficiency in steam gasification decreased dramatically for 100% biosolids. ► Addition of 10-20% loading biosolids in the fuel did not diminish the yields and the efficiency. ► H2 and CO concentrations using steam were found to be 40% higher than for those using other gasification agents.