On April 17, 2026, I was invited to speak at Char Talk, organized by the Minnesota Biochar Initiative, on a central question: how to match the right biochar to the right use.
The discussion focused on a fundamental reality: each producer creates a distinct biochar. Its properties are shaped by biomass selection and conditioning, processing technology, and carbonization conditions. These factors determine which markets and applications a given biochar can access.
When designing or selecting a biochar, it is essential to consider both the intended use and the type of biochar available, as well as the broader context. There is no inherently “good” or “bad” biochar—the context defines its quality.
In practice, mismatches are more common than expected. A well-produced biochar can lead to poor results if it is not properly selected or used. In other words, a mismatch can turn a good material into a poor outcome.
Four key risks were highlighted:
- Mismatch: using the wrong biochar for a given use
- Misapplication: incorrect rate, particle size, or method
- Misunderstanding: misaligned expectations or misinterpretation
- Missing data: lack of appropriate characterization or measurement
I would like to thank the Minnesota Biochar Initiative for the invitation and for organizing this session. The Minnesota Biochar Initiative is doing an excellent job in communicating knowledge and advancing understanding of biochar. I also thank all participants from around the world for their engagement and contributions to the discussion.
