Tracked evolution of single biochar particle’s morphology during pyrolysis in operando x-ray micro-computed tomography

Abstract

•	Evolution of morphology of single particle (1–2 mm) walnut shell was tracked in operando during pyrolysis via micro-CT (~ 812 nm resolution).
•	Samples pre-washed in water didn’t exhibit particle swelling observed in untreated samples in the 200–300 ℃ range.
•	Porosity towards the center of the particle was developed 3.5 faster in washed samples than in unwashed ones.

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