Arundo donax, one of the most invasive plants in the world, but also a promising source of lignocellulose materials was employed as a feedstock for a biorefinery process. Water-extracted Arundo donax samples were subjected to one-step biphasic fractionation in catalyzed media containing water and 1-butanol, an environmentally-friendly solvent. The effects of selected operational variables (catalyst concentration, temperature and reaction time) on the measured effects (solid recovery yield and compositions of the solid, aqueous and organic phases resulting from treatments) were assessed using statistical methods. The results allowed a quantitative discussion on aspects regarding the selectivity of component separation (lignin, glucan, and hemicelluloses), the overall recovery of valuable products, and the selection of operational conditions enabling extensive delignification (around to 90 %) and high recovery rates of glucan and hemicellulose-derived sugars (above 80 % and 75 %, respectively). This study provides new insights into biphasic fractionation, highlighting the selective separation of hemicellulose, cellulose and lignin into a single and sustainable process, thereby by enhancing biomass resource while reducing environmental impact.

中文翻译：

---

使用源自生物质的双相溶剂混合物对芦竹进行整体分馏：一种环保方法


芦竹是世界上最具入侵性的植物之一，也是一种很有前途的木质纤维素材料来源，被用作生物精炼过程的原料。水提取的芦竹样品在含有水和 1-丁醇（一种环保溶剂）的催化介质中进行一步双相分馏。使用统计方法评估所选操作变量（催化剂浓度、温度和反应时间）对测量效果（固体回收率以及处理产生的固相、水相和有机相的组成）的影响。结果允许对组分分离（木质素、葡聚糖和半纤维素）的选择性、有价值产品的总体回收率以及实现广泛脱木质素（约 90%）和高回收率的操作条件的选择等方面进行定量讨论。葡聚糖和半纤维素衍生的糖（分别高于 80% 和 75%）。这项研究提供了对双相分馏的新见解，强调了将半纤维素、纤维素和木质素选择性分离成单一且可持续的过程，从而增强生物质资源，同时减少对环境的影响。