Biomass may be obtained from many sources such as switchgrass, corn stover, sawdust, willow, biodegradable waste, etc. However, its availability in a variety of forms is problematic. Chemical engineers like homogeneity; heterogeneity means feeding problems and handling problems; as feed source varies, moisture and chemical content vary. Gasification and combustion are the most readily applicable technologies for processing biomass of various kinds for production of biofuels and other chemicals and materials.