Previous studies on organosolv pretreatment have been mostly designed to investigate optimal conditions for glucose conversion from lignocellulosic biomass. Only a few researchers have looked at the properties of organosolv lignin on conditions of high glucose conversion. This study was conducted to investigate the impact of various organosolv pretreatment factors on lignin. Two feedstocks (Liriodendron tulipifera and Pinus rigida) were evaluated with variable alkali and acidic catalyst concentrations (0.1-5%), reaction temperatures (130-170°C) and times (10-50 min). Under these factors, pretreatment conditions were controlled for similar combined severity (CS) values. After pretreatment, organosolv lignins were collected from the liquid fraction and analyzed chemical properties of its constituent by GC/MS and NMR. Finally, they were evaluated the yield of lignin monomeric products. According to the results, optimal organosolv pretreatment condition was determined to produce lignin monomeric products with good glucose conversion rates simultaneously.
10-39: Determination of organosolv pretreatment conditions for simultaneous production of glucose and lignin
Tuesday, April 30, 2013
Exhibit Hall
Conventional bioethanol production from lignocellulosic biomass required high cost investment and operating costs. To improve production ecomomics, lignin, which is inevitably produced as a by-product, could become a feedstock for high value-added chemicals. Therefore, high conversion yield of bioethanol and advanced application of lignin in an integrated process could improve the price competitiveness of bioethanol production.