Argonne National Laboratory finds low water footprint in wood-based ethanol

In Illinois, researchers at Argonne National Laboratory found that only 2.4 liters of blue water—water for processing or irrigation—is consumed per liter of wood waste-based ethanol. Its gray water usage is also low, at only 25 liters, but its green water (rainfall, fresh water) usage is high at up to 443 liters. Water footprints for wood-based biofuels varies significantly depending on region and species.