Efficiency of Biogas Production by Co-Digestion between Leaf Waste in Community and Cow Dung

DOI: 10.14416/j.ind.tech.2021.08.001


  • Prapatsara Thamwatchalangkoon Program in Innovation of Environmental Management, College of Innovative Management, Valaya Alongkorn Rajabhat University under The Royal Patronage
  • Soontharee Chintham Program in Innovation of Environmental Management, College of Innovative Management, Valaya Alongkorn Rajabhat University under The Royal Patronage
  • Vanatpornratt Sawasdee Program in Innovation of Environmental Management, College of Innovative Management, Valaya Alongkorn Rajabhat University under The Royal Patronage


Efficiency of biogas production, Leaf waste, Physical pretreatment, Co-digestion


This research studied on the efficiency of biogas production by co-digestion between leaf waste in the community and cow dung in Chang Lex community, Bangsai, Pranakorn Sri Ayutthaya province. The efficiency of biogas production in lab-scale was studied with optimum condition setting that co-digestion ratio between leaf waste in community and cow dung 1:1 in reactor 5 liters with 2.5% total solid and temperature 35-37 ํC. The research results were found pH in the system was around 6.60-7.20 and the alkalinity was 1,100-3,200 mg L-1 CaCO3. The major volatile fatty acid is acetic acid that material for methane gas production by methane-producing bacteria. Until the start-up system in 48 hours, the acetic acid was produced at 18.945 mM and continuously used until it was depleted. The highest cumulative methane was 4,183 ml and the percentage of methane production was 64.61%, respectively. From the kinetic of methane production, the maximum methane production (Hmax) was 5,295.65 ml and the rate of methane production per hour (Rmax) was 13.77 ml hr-1. Therefore, the conclusion from this research was leaf waste in the community can be used to material for biogas production.


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บทความวิจัย (Research article)