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Studies of Gas Emissions and Performance of Stoves Using Biomass Char-Briquettes



Author(s)

Tessembou Biaye, Philippe Bernard Himbane and Lat Grand Ndiaye

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DOI:10.17265/2161-6213/2024.4-6.001

Laboratory of Chemistry and Physics of Materials, Assane Seck University of Ziguinchor, Senegal, BP 523 Ziguinchor, Senegal

In this article, we evaluated the energy performance parameters and gas emissions to identify which of the stoves studied performs best, and the biomass char briquettes with less emission. Biomass char briquettes from peanut shells, cashew nut shells, and corn cobs were produced using wheat flour as a binder. The binder rate was set at 9% and 10%. Based on the energy performance parameters, it was highlighted that the char briquette from corn cob with 9% binder (Char_CC_9%) has the best energy performance, followed by the char briquette from peanut shells with 9% binder (Char_PNS_9%), and lastly, the char briquette from cashew nut shells with 10% binder (Char_CNS_10%). The average energy efficiency of the “jambar” stove was 15.68%, while that of the “Malgache” stove was 12.41 %. The average specific fuel consumption of the “jambar” stove was 0.12 kg of fuel per kilogram of water while that of the “Malgache” stove was 0.15 kg of fuel per kilogram of water. In terms of gaseous emissions, CO (carbon monoxide) concentrations were very high for char briquettes from corn cobs, with a CO emission factor of 0.40 g/min and NO_x emission factor of 9.79 mg/min. For char briquettes from cashew nut shells, CO and NO_x emission factors were respectively 0.30 g/min and 5.32 mg/min. The lowest average concentrations were obtained with char briquettes from peanut shells with a CO emission factor of 0.25 g/min and NO_x 3.98 mg/min.

Biomass char briquette, stoves, energy performance, emission factors.