All Biochars are Not Created Equal

How to Tell Them Apart

The use of charcoal as a soil amendment and for CO2 sequestration raises many questions about the characteristics of those “biochars” and their impacts on soils and organisms. This paper reviews and revises the analyses of the principal characteristics used to distinguish biochars, and presents a small survey of measured properties.

Hugh McLaughlin, PhD, Paul S. Anderson, PhD, Frank E. Shields, Thomas B. Reed, PhD

North American Biochar Conference, Boulder, CO – August 2009