Fast pyrolysisThermal conversion of biomass by rapid heating to between 450ø to 600øC in the absence of oxygen.
fatty acidA major component of fats that is used by the body for energy and tissue development.
FeedstockA raw material that can be converted to one or more products.
FermentationThe anaerobic breakdown of complex organic substances, especially carbohydrates, by micro-organisms, yielding energy.
fixed bedA bed of closely spaced particles through which gases move up or down for purposes of gasification or combustion.
fixed carbonThe carbon remaining after heating in a prescribed manner to decompose thermally unstable components and to distill volatiles.
Flash PointThe minimum temperature at which a liquid gives off vapor within a test vessel in sufficient concentration to form an ignitable mixture with air near the…
fluidized bedA gasifier or combustor design in which feedstock particles are kept in suspension by a bed of solids kept in motion by a rising column of gas.
Fly ashThe fine particulate matter entrained in the flue gases of a combustion power plant.
forestry residuesIncludes tops, limbs, and other woody material not removed in forest harvesting operations in commercial hardwood and softwood stands, as well as woody…
Fossil fuelSolid, liquid or gaseous fuels formed in the ground after millions of years by chemical and physical changes in plant and animal residues under high…
FungiPlant-like organisms with cells with distinct nuclei surrounded by nuclear membranes, incapable of photosynthesis.
furfuralAn aldehyde derivative of certain biomass conversion processes; used as a solvent.