Biofuels

A plain-language guide to sustainable aviation fuel: how it is made, why it is blended, and how much exists.

A plain-English overview of what biofuels are, the main types, how they are made, and how to judge their climate…

Renewable diesel is a hydrocarbon fuel made from fats and oils. See how it differs from biodiesel in chemistry, cold-weather…

Bioethanol is ethanol fermented from plant sugars and starch. See the feedstocks, the production steps, common fuel blends and the…

Second generation biofuels use non-food biomass such as straw, residues and energy grasses. Here is how they work and where…

Wood resists enzymes because of lignin and crystalline cellulose. Learn what pretreatment does and what trade-offs it brings.

A plain-language walk through biodiesel production: feedstocks, transesterification, separation, washing and the glycerin coproduct.

Biogas is the raw gas from digesting organic matter; biomethane is that gas upgraded to pipeline quality. Here is how…

A plain guide to advanced biofuels examples, matching each fuel to its feedstock and production route using US Renewable Fuel…

Biofuels are often called carbon neutral, but lifecycle accounting shows the answer depends on feedstock, land use and timing.