A study on experimental characteristic of microwave-assisted pyrolysis of microalgae

► 1500 W and 2250 W are the best power to gain the maximum yield of bio-oil and gas, respectively. ► The maximum heating rate and temperature became higher as microwave power increased. ► High microwave power and catalysts promoted the pyrolysis of Chlorella vulgaris. ► Activated carbon exhibited the best catalysis effect followed by the solid residue. ► The optimal content of activated carbon was 5% with the bio-fuel (gas and bio-oil) yield of 87.47%.