The global increase in the use of biofuels as substitute transportation fuels has prompted research and development into advanced chemical, biochemical and thermochemical biofuels production. This research and development is aimed at improving the quality and environmental impact of biofuels production, as well as the overall efficiency and output of biofuels production plants. The range of biofuels has also increased, with market developments leading to the increased production and utilization of advanced biofuels such as biosyngas, biohydrogen and biobutanol. "The Handbook of Biofuels Production" provides a thorough reference on the range of biomass conversion processes and technologies.