DOI: https://doi.org/10.55373/mjchem.v27i5.267

Keywords: Biochemical methane potential; Kinetic studies; municipal solid waste; Modified-Gompertz model; anaerobic degradation

Abstract

This study evaluated the biochemical methane potential (BMP) and its kinetic studies of municipal solid waste using a total of five solid waste mixtures. Mixture A consisted of 74% organic waste and 26% inorganic waste, mixture B consisted of 72% organic waste and 28% inorganic waste, mixture C consisted of 60% food waste, 30% inorganic waste, and 10% garden waste, mixture D consisted of 30% food waste, 60% paper waste, and 10% diaper waste, and mixture E consisted of 10% food waste, 30% plastic waste, and 60% textile waste. The BMP assay was conducted in a 250 mL serum bottle with 70% of the working volume. The samples were then incubated at 37°C for 37 days. The BMP assay showed that mixture B had the highest methane yield (310.91 mL CH₄/g VS), followed by mixture C, mixture D, mixture A, and mixture E with 269.61 mL CH₄/g VS, 240.85 mL CH₄/g VS, 229.91 mL CH₄/g VS, and 218.13 mL CH₄/g VS, respectively. For the kinetic study, the findings revealed that the modified Gompertz model (MGM) fitted well with the predicted methane generation potential with R²>0.97. The findings of this paper provided baseline data for effective municipal solid waste management practices.