In this study, we tested a natural draft gasifier, currently implemented in Senegal and the traditional three stones fire (TSF) in the laboratory, using the protocol of water boiling test (WBT). Pollutants emissions from three types of biomass full were investigated in this work. Our results show that, burning the same wood (Cordyla Pinnata, dimb), the gasifier had a fuel consumption 37% lower than the traditional three stones, and decrease emissions factors of fine particulate matter (PM) by 74%, organic carbon (OC) by 59 % and elemental carbon (EC) by 55%. The gasifier has also shown to reduce fuel used and emissions compared with the three stones using Casuarina Equisetifolia (Filao) though to a minor extent: 24 % in fuel consumption and emissions reduction of 53% of PM, 55% of OC and 18% EC. The micro-gasifier using typha pellets is the cooking system the most efficient with a reduction 70% of fuel and more than 85% of emissions comparing to the 3-stones-dimb combination. Our results agree with other studies and confirm that gasifier have a very low fuel consumption and low emissions of climate forcing particles. Further field studies are needed to evaluate the adoption of these new stoves and fuels and to analyze fuel consumption and emissions under real-world cooking practice
Laboratory estimation of elemental and organic carbon emissions from advanced biomass stoves in Senegal