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The role that lignocellulosic feedstocks and various biorefining technologies can play in meeting Ireland's biofuel targets

This paper considers the contribution that biorefineries, through the production of second‐generation biofuels from lignocellulosic feedstocks, can make in the Republic of Ireland to the mandated 10% transport biofuel quotient for 2020. An emphasis is placed on the avoidance of land‐use conflict issues and, hence, on the prioritization of waste/residue utilization before dedicated energy crops are grown. It is concluded that up to 5.3% of the 2010 demand for biofuels can be met from the utilization of feasible quantities of wastes and residues in near‐term biorefining technologies and that 5% of the 2020 petrol and diesel demand can be met via processing a similar quantity of waste in advanced biorefining processes based on consolidated bioprocessing micro‐organisms and syngas‐reforming catalysts. The remaining biofuel requirements for 2020 can be met by processing energy crops. Between 1.4% and 15.9% of the agricultural area of Ireland is required for the production of these crops, depending on the particular feedstock and technology employed. The production of a high‐yielding Miscanthus crop that is harvested directly after senescence will place the minimum requirement on Irish land. © 2009 Society of Chemical Industry and John Wiley & Sons, Ltd