– Properties, Variations with Source Biofuels – Second Generation Biofuels – Specifications and Performance Biofuels – Third Generation Biofuels – Use Biogas Biogas – Upgrading Biogenic Coal Bed Methane Biogeochemical Cycles Biohydrogen Biohydrogen – Production Biological Action Biological Alcohol Biological Conversion Biological Conversion – Aerobic Digestion Biological Conversion – Anaerobic Digestion Biological Hydrogen Production Biomass Biomass Ash Biomass Chemistry Biomass Combustion Biomass Composition and Properties Biomass – Conversion Technologies Biomass-Derived Carbon Biomass – Direct Combustion Biomass – Drying Biomass Energy Biomass Energy Systems Biomass – Extraction Biomass Feedstocks Biomass – Fermentation Biomass Fuel Biomass Fuel – Characteristics Biomass – Gasification Biomass – Gasification Principles Biomass – Gasification Process Biomass – Gasification Reactors Biomass – Herbaceous Biomass – Land Requirements Biomass – Liquefaction Biomass Power Biomass – Power Facility Biomass Properties Biomass – Pyrolysis Biomass – Synthesis Gas Production Biomass to Energy Biomass to Liquids Biomass Waste Bio-oil Bio-oil – Upgrading Bio-oxidation Biophotolysis Biopower Bioprocess Bioreactor Biorefinery Bio-SCOT Process Bioscrubbing Bitumen Black Liquor Blended Fuels Blending Blue Gas Blue Water Gas Boiler Slag Boiling Water Reactor Bone Dry Boson Bottom Ash Bottoming Cycle Bottom Sediment and Water Boudouard Reaction Breeder Reactor BRI Process Briquette Briquette Binder Briquette Manufacture Briquette Properties Briquetting Processes Bromine Number BTEX BTU BTX Bubble Point Bubbling Fluidized Bed Gasifier Bulk Density Bunker Bunker