Characterizing biomass and coal gasification for effective energy and biochar co-production

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Small-scale gasification stoves are preferred by farmers who need energy for cooking/heating and bio-char for farming. Biochar is a high efficiency carbon-rich material derived from cooked biomass in an oxygen-limited or oxygen-free environment. Biochar can be used as a soil amendment and a replacement of other fertilizers (such as nitrogen based) which contribute to greenhouse gas emissions. The challenge remains for developing a high-efficiency and cost-effective gasification technology through separating and optimizing the two-stage combustion and pyrolysis process during biomass gasification. The proposed research project will develop and characterize a biomass/coal fuelled kitchen scale cook stove for optimizing energy and biochar production rates and reducing the greenhouse gases and smoke formation.