The current study focused on the feasibility of biogas production from Napier grass. Napier grass, a tropical plant,
can grow up in drought and dry conditions. Napier grass contains 30.9% total carbohydrates, 27% protein, lipid
14.8%, total ash 18.2%, fiber 9.1% (dry weight). Its organic compositions are an ideal feedstock for biogas
production. The fresh grass was harvested after 5 week plantation, grounded in 0.5 to 1 mm diameter size before
fermentation in mesophilic batch reactors, with varying solid concentrations of 5 - 15 %. The optimum condition for
the biogas production was found at 5% solid concentration. Methane content, yield and production rate were 53%,
122.4 mL CH4/g TVS remove, 4.8 mL/hr at the optimum condition. Economic analysis of biogas obtained from the
experiment with liquid petroleum gas (LPG) with benefit/cost ratio (B/C ratio) greater than 1 suggested that the
Napier grass is considered as a potential energy crop
The current study focused on the feasibility of biogas production from Napier grass. Napier grass, a tropical plant,can grow up in drought and dry conditions. Napier grass contains 30.9% total carbohydrates, 27% protein, lipid14.8%, total ash 18.2%, fiber 9.1% (dry weight). Its organic compositions are an ideal feedstock for biogasproduction. The fresh grass was harvested after 5 week plantation, grounded in 0.5 to 1 mm diameter size beforefermentation in mesophilic batch reactors, with varying solid concentrations of 5 - 15 %. The optimum condition forthe biogas production was found at 5% solid concentration. Methane content, yield and production rate were 53%,122.4 mL CH4/g TVS remove, 4.8 mL/hr at the optimum condition. Economic analysis of biogas obtained from theexperiment with liquid petroleum gas (LPG) with benefit/cost ratio (B/C ratio) greater than 1 suggested that theNapier grass is considered as a potential energy crop
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