Revealing sustainable energy opportunities through the integrated use of Canna indica biomass and buffalo manure for biogas generation

Abstract

Mature Canna indica L., contains significant percentages of hemicellulose (21.6±0.22%) and lignin (20.14±0.13%), showing its high potential as a biogas source. This study explores the potential of using C. indica biomass harvested from waterlogged clay areas for biogas production. The research focuses on optimizing the anaerobic co-digestion process with swine dung through varying calcium oxide (CaO) pretreatment concentrations during a 45-day experiment. CaO pretreatment significantly enhances biogas yield, with 2% CaO yielding the highest biogas production at 8024.10 mL. Methane concentration analysis reveals that higher CaO concentrations, notably 2% and 3%, accelerate methane production, indicating an optimal CaO concentration of around 2% for maximizing methane yield. This study outperforms others in anaerobic co-digestion, achieving a methane concentration of 64.93%. Data on C. indica at different CaO concentrations as a substrate underscores the need for precise CaO tuning for optimal methane production. The findings open avenues for sustainable waste management and renewable energy production, hinting at promising developments in energy solutions through optimized anaerobic co-digestion processes using C. indica and buffalo dung.