LSRE - Laboratory of Separation and Reaction Engineering - Associate Laboratory LSRE/LCM, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
LSRE - Laboratory of Separation and Reaction Engineering - Associate Laboratory LSRE/LCM, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; Department of Chemical Engineering, Universidade de Santiago de Compostela, Rua Lope Gómez de Marzoa, s/n., E15782 Santiago de Compostela, Spain.
Bioresour Technol. 2017 Mar;227:188-196. doi: 10.1016/j.biortech.2016.11.112. Epub 2016 Dec 2.
The aim of this work was to study the dissolution of raw peanut and chestnut shells in ionic liquids. Dissolution of raw biomass up to 7wt% was achieved under optimized operatory conditions. Quantification of polysaccharides dissolved through quantitative Cq NMR revealed extractions of the cellulosic material to ionic liquids as high as 87%. Regeneration experiments using an antisolvent mixture allowed to recover the cellulosic material and the ionic liquid. The overall mass balance presented very low loss rates (<8%), recoveries of 75% and 95% of cellulosic material from peanut and chestnut shells, respectively, and the recovery of more than 95% of the ionic liquid in both cases. These results show the high potential of using nut shells and ionic liquids for biorefining purposes. Moreover, high recovery of ionic liquids favors the process from an economical point of view.
本工作旨在研究生花生和板栗壳在离子液体中的溶解情况。在优化的操作条件下，生生物质的溶解率达到了 7wt%。通过定量 Cq NMR 对溶解的多糖进行定量分析，结果表明纤维素材料向离子液体的提取率高达 87%。使用抗溶剂混合物进行的再生实验可以回收纤维素材料和离子液体。总的质量平衡显示出非常低的损失率（<8%），从花生壳和板栗壳中分别回收了 75%和 95%的纤维素材料，在这两种情况下，离子液体的回收率都超过了 95%。这些结果表明，利用坚果壳和离子液体进行生物炼制具有很高的潜力。此外，离子液体的高回收率从经济角度来看有利于该过程。
