POTENSI LIMBAH SAGU (Metroxylon sp.) DI KECAMATAN TEBING TINGGI BARAT KABUPATEN KEPULAUAN MERANTI SEBAGAI SUBSTRAT PENGHASIL BIOGAS
Abstract
Biogas is one of alternative energy sources that fulfills future fuel needs. This study
aimed to analyse the potency of sago waste as fermentation substrate for biogas
production. This research was done experimentally by employing sago waste materials
obtained from Sago Factory Nambus River from District West Tebing Tinggi Sub-
province Meranti and fresh cow rumen liquid was obtained from slaughterhouse in
Pekanbaru. The biogas volume was calculated by measuring the volume of water that
was pushed every 3 days, where the volume of water driven was proportional to the
volume of biogas produced. The bacterial cell numbers was counted using plate count
method employing Nutrient Agar (NA). The substrate fermentation temperature and pH
were measured every 3 days. The highest biogas volume was produced by fermenter III
(45760 ml) containing solid sago waste, liquid sago waste, and rumen liquid with ratio 1
: 1 : 1 and the lowest was produced by fermenter II (1600 ml). The total bacterial
involved in biogas production ranges from 1,87x10 5 – 2,87x10 8 CFU/ml samples. The
temperature and pH of substrate fermetation was relatively constant during biogas
production. The results showed that sago waste is potential as substrate for biogas
production.
aimed to analyse the potency of sago waste as fermentation substrate for biogas
production. This research was done experimentally by employing sago waste materials
obtained from Sago Factory Nambus River from District West Tebing Tinggi Sub-
province Meranti and fresh cow rumen liquid was obtained from slaughterhouse in
Pekanbaru. The biogas volume was calculated by measuring the volume of water that
was pushed every 3 days, where the volume of water driven was proportional to the
volume of biogas produced. The bacterial cell numbers was counted using plate count
method employing Nutrient Agar (NA). The substrate fermentation temperature and pH
were measured every 3 days. The highest biogas volume was produced by fermenter III
(45760 ml) containing solid sago waste, liquid sago waste, and rumen liquid with ratio 1
: 1 : 1 and the lowest was produced by fermenter II (1600 ml). The total bacterial
involved in biogas production ranges from 1,87x10 5 – 2,87x10 8 CFU/ml samples. The
temperature and pH of substrate fermetation was relatively constant during biogas
production. The results showed that sago waste is potential as substrate for biogas
production.
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