Biochar's carbon storage potential undervalued

Friday 7 Feb 2025

 
Biochar, a charcoal-like material derived from plant biomass, has long been hailed as a promising tool for carbon dioxide removal. However, a new study by Stanford researchers highlights a critical issue: current methods for assessing biochar's carbon storage potential may significantly undervalue its true environmental benefits.

The paper, published in Environmental Research Letters points the way to more accurately evaluating biochar, and boosting its credibility as a climate change solution.

The research challenges conventional durability metrics and proposes a more nuanced framework for evaluating biochar projects. It grew out of an early project looking at soil's ability to capture carbon dioxide.

"We realized that even though biochar is really important component of the carbon removals market, there is very little useful data on how it actually behaves," said study co-author Kate Maher, a professor of Earth system science in the Stanford Doerr School of Sustainability and a senior fellow at the Stanford Woods Institute for the Environment. "It is important for policymakers and buyers to be aware of this."

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Source & image credit: Phys.org
Image credit: Oregon Dept of Forestry


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