By Sabina Dhungana, Forest Products Specialist
What is Biochar?
Biochar is a pure carbon product made from organic material that is generally produced through a process called pyrolysis. Pyrolysis is the decomposition of organic matter at elevated temperatures in an environment with limited oxygen.
Biochar Production and Opportunities for Wood Businesses
Biochar can be produced using woody biomass such as wood chips, sawdust, shavings or bark that is generated from timber harvesting or as a by-product of wood products manufacturing.
Biochar production systems can be classified as either pyrolysis or gasification systems. The pyrolysis of biomass results in three main products: a solid (bio-char), a liquid (bio-oil), and a gas (syngas). Furthermore, pyrolysis becomes self-sustaining as syngas that is produced combusts, generating additional heat for the production process. Gasification on the other hand produces smaller quantities of biochar in a directly-heated reaction vessel with introduced air. Although pyrolysis systems result in higher concentrations of biochar, both production systems can be developed as mobile or stationary units as per the need and availability of the feedstock. Continue reading “Biochar: An Emerging Market for Underutilized Woody Biomass”