Energy availability is a crucial pre-requisite of development to any society. In an effort to provide an affordable firewood alternative to the rural households in Nigeria, this study was carried out to analyze some properties of bio-briquettes (millet stalk, coconut shell) prepared at moderate pressure and ambient temperature using a simple extruder briquetting machine. Also different briquette samples were produced by blending fuel briquettes of the biomass materials such as millet stalk with charcoal and coconut shell with charcoal respectively. The proximate analysis of the raw materials was also determined. The moisture content of the briquettes varied from 0.44±0.04% (millet stalk) to 0.30±0.09% (coconut shell). The ash content varied from 3.91±0.30% (millet stalk) to 1.94±032% (coconut shell). The ash content of the blended briquettes made from (millet stalk, coconut shell and charcoal) ranged from 8.08±2.30% for (millet stalk with charcoal) to 4.19±0.02% for (coconut shell with charcoal). The viability test results showed that coconut shell blended with charcoal briquettes has shorter ignition time 0f (00.013cm/s) this shows that it would easily ignite, while millet stalk briquettes has the longer afterglow time of (96sec) and slow propagation time of (0.00073cm/s). The mechanical properties showed that, compressive strength and density of the briquettes produced showed that millet stalk briquettes has the highest value of 1.05N/mm2 while millet stalk and coconut shell briquette gave the highest density values of 0.33g/cm3(millet stalk) to 0.34g/cm3 (coconut shell), it took the coconut shell briquettes 30 minutes to boil 2litres of water, the same was obtained for charcoal as control while the millet stalk briquettes took 28 minutes to boil the same quantity of water. Conclusively, efficient and affordable alternative sources of energy have been obtained from these agro-wastes.
Biomass, Binder, Density, Briquetting
Senchi, D.S , Elinge, C.M "Combustion Profile of Fuel Briquettes Produced From Millet Stalk with Charcoal as Blend" Iconic Research And Engineering Journals Volume 3 Issue 12 2020 Page 237-243
Senchi, D.S , Elinge, C.M "Combustion Profile of Fuel Briquettes Produced From Millet Stalk with Charcoal as Blend" Iconic Research And Engineering Journals, 3(12)