Impact of Bamboo Feedstock Moisture Levels on Methane Emissions and biochar quality in kon-tiki Biochar Production

With the global emphasis on carbon reduction, biochar production has emerged as a promising carbon sequestration technology. While high-tech biochar production has matured, artisanal methods, widely used in developing countries, face challenges due to emissions of CH₄ during pyrolysis which is estimated at 30 kg per ton of biochar under Carbon Standards International (CSI) methodologies, can significantly reduce the carbon sequestration potential of artisanal biochar. However, previous studies use twig and leaves as biomass and suggest that optimizing feedstock moisture could have minimal CH₄ emissions even zero CH₄ emission.

This study investigates the relationship between pyrolysis conditions—specifically feedstock moisture levels and kiln temperatures—and methane emissions in Kon-Tiki soil pit kilns, a widely adopted low-cost solution in developing regions. Experiments will include agricultural residues such as bamboo and Lantana camara, under varying moisture levels, to calculate the emission factor of biochar production and assess their impact on CH₄ emissions through carbon balance method. Additionally, we will analyze emissions of CO, CO₂, and kiln temperature throughout the production process to provide a comprehensive understanding of the environmental implications of artisanal biochar production. By exploring the factors influencing emissions, this research aims to enhance the sustainability of biochar production in developing countries.