In this work, valorization of Paulownia wood (PW) was proposed following several process configurations for biofuels and value-added compounds production. Firstly, autohydrolysis and ethanol-organosolv strategies were assessed separately for the fractionation of PW to enhance the enzymatic digestibility of cellulose. A third strategy focused on a sequential process (autohydrolysis and organosolv) was explored. Two temperatures were selected for the first stage of the combined process. High concentration of oligosaccharides (26.29 g/L) and high concentration of degradation products (17.21 g/L) were obtained at 210 and 230 °C, respectively. The solids obtained from both pretreatments were subjected to organosolv delignification (200 °C, 3 h and 50% ethanol) achieving delignification of 58 and 30% for the autohydrolyzed biomass at 210 °C and 230 °C, respectively. The combined process resulted in susceptible biomass able to produce 64 g/L of ethanol. Therefore, the strategies explored in this work open the possibility to build a refinery around Paulownia wood.

在这项工作中，提出了以下几种泡桐木（PW）的增值方法，用于生物燃料和增值化合物的生产。首先，分别评估了自水解和乙醇-有机溶剂策略对PW的分馏作用，以增强纤维素的酶消化率。探索了关注顺序过程（自动水解和有机溶剂）的第三种策略。在合并过程的第一阶段选择了两个温度。在210和230°C下分别获得高浓度的低聚糖（26.29 g / L）和高浓度的降解产物（17.21 g / L）。将从两种预处理中获得的固体进行有机溶剂脱木素处理（200°C，3 h和50％乙醇），在210°C和230°C下自动水解的生物质分别达到58和30％的木质素去除率，分别。合并的过程导致易感生物质能够产生64 g / L的乙醇。因此，这项工作中探索的策略为围绕泡桐木建造精炼厂提供了可能性。