The results show that as the increasing percentage of the charcoal cobs have a significant influence on the characteristic of the briquettes. Briquettes that have been printed and then tested its characteristic include heating value, moisture content and ash content. In this study, peanuts shell biomass combined with charcoal cobs to be made into briquettes by varying the percentage composition of peanuts shell biomass and charcoal cobs as follows 75 : 25, 50 : 50, and 25 : 75. Peanuts shell and cobs are biomass from agricultural waste which is quite abundant so it is potential to be used as a source of alternative fuels. Biomass is a solid waste that can be used as a fuels source. It is therefore necessary to find sources of alternative fuels that are renewable. Energy crisis in the world especially from fossil fuels which caused by the depletion of non-renewable petroleum reserves.
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