Carbonyl compound emission during the combustion of typical civilian solid fuels in domestic stove Provisionally Accepted

Xin Lyv^1*

• ¹Shanghai University, China

With biomass and coal remaining the primary fuel in rural area, the carbonyl compound emission during the combustion of these fuels is one of the major sources of environmental pollution. A comprehensive and quantitative investigation is required for the better evaluation and control of the carbonyl compound emission. We selected 11 typical fuels (covering straws, woods and coals) for actual combustion experiments under the same stove conditions to explore the emission characteristics and influencing factors of carbonyl compound emission. By the combination of 2,4dinitrophenylhydrazine derivatization method and high-performance liquid chromatography (DNPH-HPLC), the emission factor (EF) and modified combustion efficiency (MCE) can be obtained to built an EF-MCE mapping, where emission mode of different types of fuels can be identified. By systematic measurement of the emission and its composition in different stages of combustion and in multiple fuel feeding, it is found that the hazardous emission is massively generated in the later stages and EF can be significantly decreased by multiple fuel feeding. Our work shows the quantitative analysis of emission in typical fuels and provides an important reference for future scientific research and practical emission evaluation.