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aip.scitation.org/doi/abs/10.106....1063/1.5098179

Energy consumption is continuously increasing along with the increase in population and economy level of society. The condition is aggravated with the imbalances of energy supply. An alternative energy source that cheap and renewable can be one of energy diversification solution to overcome the condition. One of alternative energy that worth to be developed is biomass energy. Biomass sources that available in abundant amount and not optimally utilized yet are sawdust and coconut shell.