even more is produced during primary and secondary wood processing all these byproducts can be used as biofuel to replace more polluting fossil fuels thus creating a more environmentally friendly energy alternative the co emitted during direct combustion of sustainably produced biofuel is largely balanced by co uptake in renewing forests macqueen et al sathre oconnor many studies indicate that the recovery and combustion of the biomass byproducts associated with the lifecycle of woodbased products is the single most significant contributor to the lifecycle ghg benefits of woodbased product use gustavsson et al sathre oconnor