期刊
GREEN CHEMISTRY
卷 18, 期 22, 页码 6108-6114出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6gc02225a
关键词
-
资金
- National Natural Science Foundation of China (NSFC) [21476016]
- Program of the Co-construction with Beijing Municipal Commission of Education of China [506209]
- Fundamental Research Funds for the Central Universities, Beijing University of Chemical Technology [YS1407]
Development of lignocellulosic biorefineries requires improved environmental and cost-effective processes in addition to tailoring the lignocellulosic constitutions with the desired biofuels and chemicals. Here, we first report a novel strategy of lignocellulose fractionation at solid biomass loadings up to 40 wt% through irradiation assisted self-catalysis (IASC) with a green solvent aqueous system consisting of 40 wt% gamma-valerolactone and 60 wt% water (40 : 60 GVL/H2O) with no adscititious catalyst. Each fraction of cellulose, hemicellulsoe and lignin can be prone to upgrade to desired biofuels and bioproducts. The irradiation-mediated carboxyl, aldehyde, and phenol groups in biomass act as weak active acid sites for (hemi) cellulose cleavage in 40 : 60 GVL/H2O and their subsequent self-catalyzed hydrolysis to soluble carbohydrates and their derived products, which are catalytically upgraded to furans with an 80% conversion rate, and/or fermentative upgrading to microbial oils (biomass 31 g L-1 and lipid content 36.5 wt%). The regenerated cellulose can achieve approximately 184.3 g L-1 monomeric glucose (total concentration of soluble C5 and C6 sugars is 231 g L-1) and high potential ethanol titers of 88.5 g L-1 during SSF fermentation. The obtained lignin also showed good reactivity for valorization to nanoparticle functional materials and/or low molecular aromatics. In the end, the overall process mass balance at the laboratory-scale level was preliminarily evaluated.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据