Abstract
Biochar is a fine‐grained, highly porous charcoal that helps soils retain nutrients and water. It is made by heating biomass in the absence of oxygen to drive off volatile gases, leaving carbon and other nutrients behind. Biochar could provide long‐term natural terrestrial carbon sequestration while increasing soil fertility. Additionally, gases released during the production process, also called pyrolysis, could be used for heating and/or electricity generation. The latest biochar science, technology, and policies were presented recently at the 3rd International Biochar Conference: IBI 2010, in Brazil.
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