Waste, Journal Year: 2025, Volume and Issue: 3(2), P. 12 - 12

Published: March 25, 2025

Pretreatment of lignocellulosic biomass remains the primary obstacle to profitable use this type in biorefineries. The challenge lies recalcitrance lignin-carbohydrate complex pretreatment, especially difficulty removing lignin access carbohydrates (cellulose and hemicellulose). This study had two objectives: (i) investigate effect reactive extrusion on terms delignification percentage structural characteristics resulting extrudates, (ii) propose a novel pretreatment approach involving technology based results first objective. Two types biomasses were used: agricultural residue (corn stover) forest (black spruce chips). By optimizing conditions via response surface analysis (RSA), percentages significantly improved. For corn stover, yield increased from 2.3% 27.4%, while increasing 1% 25.3% for black chips. highest achieved without sodium hydroxide temperatures below 65 °C. Furthermore, optimized extrudates exhibited important changes any formation p-cresol, furfural, 5-hydroxymethylfurfural (HMF) (enzymes microbial growth-inhibiting compounds). Acetic acid however was detected stover extrudate. included disorganization most recalcitrant functional groups, reduction particle sizes, increase specific areas, appearance microscopic roughness particles. Analyzing all data led new promising biomasses. involves combining biodelignification with white rot fungi improve enzymatic hydrolysis carbohydrates.

Language: Английский