From the data of 50 days, biogas were 6.07 cubic meters. Or as compared 2.76 kg LPG The cost per kilogram in 26.48 per case buy grass silage and 19 per kilogram.96 per case planting grass to ferment. In both cases, which compared with the purchase of LPG tank size, current, 15 kg price at 400-410 baht per kg 26.70), and found that fermentation biogas from Napier Grass is feasible with a lower cost than about kilograms per
0.22-6.74), depending on the value of materials and equipment for the production of biogas fermentation system of Napier Grass.
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