Abstract or Description:
Biochar is actually just charcoal or black carbon, made from the incomplete combustion of wood or other biomass products. With growing interests in “green” and “carbon-negative” materials, biochar commonly refers to charcoal made from organic wastes such as tree trimmings, scrap wood, and plant material left from agricultural harvests. Like a campfire, wood biomass will burn without any other external fuels or energy. Since burning wood does not add fossil carbon to the atmosphere, burning wood or making biochar is a carbon-negative process.
College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ)
University of Arizona Cooperative Extension Publication AZxxxx