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- W2186522303 abstract "Wheat straw (Triticum sativum) and poplar wood (Liriodendron tulipifera) were subjected to biomimetic oxidative pretreatment in aqueous organic solvent at mild condition. To enhance the biomass conversion efficiency, influences of different coordinated copper (II) complexes and organic solvents on hydrolysable sugar yield, residual lignin content and biogas potential were investigated. The screening study of copper complexes showed that the pretreatment system in the presence of Cu/dpa complexes gave the best results among all other coordinators on accelerating the oxidative lignin degradation when hydrogen peroxide was used as an oxidant yielding 409.7 mg g -1 or 63.7% theoretical reducing sugar yield based on total polysaccharides of untreated wheat straw after 48-h enzymatic hydrolysis. Delignification of wheat straw in isopropanol/water mixture catalyzed Cu/dpa/H2O2 system improved both lignin removal and lignin depolymerization efficiencies which subsequently led to higher yield of hydrolysable reducing sugars. Reducing sugar yield of 548.7 mg g -1 (85.3% theoretical yield) and 11.3% total residual lignin content (43.8% lignin removal) were obtained from the Cu/dpa/H2O2 pretreatment system in isopropanol/water mixture. However, less effect was observed for poplar wood biomass pretreatment in all particle sizes tested. Keyword: Biomass pretreatment, lignocelluloses delignification, wheat straw, poplar wood, coordinated-copper complex, aqueous organic solvent system, oxidative lignin degradation, organosolv system" @default.
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- W2186522303 date "2011-01-01" @default.
- W2186522303 modified "2023-09-27" @default.
- W2186522303 title "An Alternative Biomass Conversion Approach: Biomimetic Oxidative Reaction in a Combination with Organosolv System" @default.
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