Energy valorisation of crude glycerol and corn straw by means of slow co-pyrolysis: Production and characterisation of gas, char and bio-oil

The pyrolysis of crude glycerol produced rich gas and bio-oil. The gas had a L.H.V of 46 MJ/m3 but low yield (23 wt.%). Mixing the crude glycerol with corn straw the gas yield could be increased and still having good heating value, for instance the blend [1:1] presented a LHV: 29 MJ/m3 and 39 wt.% of yield. The resulting gas was rich in light hydrocarbons and had a good H2 concentration. The blending ratios also affected the bio-oil and char production. The selection of blending ratios is a function of the desired fraction to be maximised.