Scientific References

Peer Reviewed Literature: Biodegradation measurements confirm the predictive value of the O:C-ratio for biochar recalcitrance

Authors Mo Bai, Burkhard Wilske, Franz Buegger, Esben Wilson Bruun, Martin Bach, Hans-Georg Frede and Lutz Breuer
Presented at
Journal of Plant Nutrition and Soil Science, DOI: 10.1002/jpln.201300412


Suitable predictors of degradability are sought to support the identification of biochars with large potential to increase C sequestration in soils. We determined the biodegradation of 9 chars from hydrothermal carbonization and pyrolysis in two agricultural soils. The 200- and 115-day degradation correlated strongly with the O:C- and slightly with the H:C-atomic ratio of 9 and 14 biochars, respectively. Highest temperature treatment and ash content did not show similar correlations.