查看文章

Bio-methanation of agro-residue could fulfill the rising energy demands and curb the environmental pollution. Nevertheless, hydrolysis is the rate limiting step in anaerobic digestion (AD) of agro-waste (wheat straw, WS) due to its recalcitrant lignocellulosic composition. Hydrothermal (100–175 °C, 30–120 min) and thermal-acid (100–175 °C, 0.5–2% H₂SO₄ v/v) pretreatments of WS were performed to assess the pretreatment effects on WS solubilization, recalcitrant formation, lignocellulosic composition and improvement in methane yield. The 60-min hydrothermal pretreatments had an optimum chemical oxygen demand (COD) solubilization. The hydrothermal pretreatment degraded predominantly the hemicellulose by 53.4%. The furan derivatives, i.e., furfural and 5-hydroxyl-methyl-furfural (5-HMF) were formed during hydrothermal pretreatment of WS at 175 °C. The furfural and 5-HMF were generated at all …