title: Biocoal Briquettes Combusted in a Household Cooking Stove: Improved Thermal Efficiencies and Reduced Pollutant Emissions.
abstract: Clean fuels are urgently needed to reduce household cooking emissions. The thermal efficiencies (ηth) and pollutant emission factors (EFs) of biocoal briquettes (made from a mixture of biomass and coal powder) burned in a typical cooking stove were investigated and compared with those of coal briquettes and biomass briquettes. Biocoal briquette samples were obtained by molding blends of anthracite with 10-30 wt % crop straw of various types (maize straw, wheat straw, or rice straw). The optimum proportions for energy savings and PM2.5EF reduction were found to be 15-20 wt %. Compared with the ηthof coal briquettes and biomass briquettes, the ηthof biocoal briquettes increased by 81-127% and 88-179%, respectively, with the optimum addition ratios of crop straw, while the delivered energy-based PM2.5EFs of the biocoal briquettes were reduced by 61-67% and 99.0-99.5%, respectively. Delivered energy-based EFs of NOX, SO2, and toxic elements (As, Se, and Pb) also showed a significant reduction. These results indicated that biocoal briquettes can serve as a promising substitute for domestic solid fuel to reduce pollutant emissions and save energy.
authors.affiliation: School of Chemical Engineering and Technology, China University of Mining and Technology , Xuzhou, 221116, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Qi
authors.affiliation: State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University , Beijing, 100084, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Li
authors.affiliation: School of Chemical Engineering and Technology, China University of Mining and Technology , Xuzhou, 221116, China.|National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology , Xuzhou, 221116, China.
authors.forename: Jianjun
authors.identifier: 0000-0002-0656-8102
authors.initials: J
authors.lastname: Wu
authors.affiliation: State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University , Beijing, 100084, China.
authors.forename: Jingkun
authors.initials: J
authors.lastname: Jiang
authors.affiliation: School of Chemical Engineering and Technology, China University of Mining and Technology , Xuzhou, 221116, China.
authors.forename: Zhenyong
authors.initials: Z
authors.lastname: Miao
authors.affiliation: School of Environment and Surveying and Mapping, China University of Mining and Technology , Xuzhou, 221116, China.
authors.forename: Duosong
authors.initials: D
authors.lastname: Li
mesh_terms: D000393:Air Pollutants; D003031:Coal; D003296:Cooking / Q000295:instrumentation; D006794:Household Articles
chemical_list: D000393:Air Pollutants; D003031:Coal