Malaret Francisco, Gschwend Florence J V, Lopes Joana M, Tu Wei-Chien, Hallett Jason P
Department of Chemical Engineering, Imperial College London London SW7 2AZ UK
High Pressure Process Group, Department of Chemical Engineering and Environmental Technology, University of Valladolid Spain.
RSC Adv. 2020 Apr 22;10(27):16050-16060. doi: 10.1039/d0ra02040k. eCollection 2020 Apr 21.
Deconstruction of lignocellulosic biomass with low-cost ionic liquids (ILs) has proven to be a promising technology that could be implemented in a biorefinery to obtain renewable materials, fuels and chemicals. This study investigates the pretreatment efficacy of the ionoSolv pretreatment of using the low-cost ionic liquid triethylammonium hydrogen sulfate ([N][HSO]) in the presence of 20 wt% water at 10% solids loading. The temperatures investigated were 120 °C and 150 °C. Also, the influence of performing the pretreatment under sub-critical and supercritical CO was investigated. The IL used is very effective in deconstructing eucalyptus, producing cellulose-rich pulps resulting in enzymatic saccharification yields of 86% for some pretreatment conditions. It has been found that under a CO atmosphere, the ionoSolv process is pressure independent. The good performance of this IL in the pretreatment of eucalyptus is promising for the development of a large-scale ionoSolv pretreatment processes.
用低成本离子液体（ILs）解构木质纤维素生物质已被证明是一项很有前景的技术，可应用于生物精炼厂以获取可再生材料、燃料和化学品。本研究考察了在10%固含量、20 wt%水存在的条件下，使用低成本离子液体硫酸氢三乙铵（[N][HSO]）进行ionoSolv预处理的效果。研究的温度为120℃和150℃。此外，还研究了在亚临界和超临界CO条件下进行预处理的影响。所使用的离子液体在解构桉木方面非常有效，可生产富含纤维素的纸浆，在某些预处理条件下酶促糖化产率可达86%。研究发现，在CO气氛下，ionoSolv工艺与压力无关。这种离子液体在桉木预处理中的良好性能为大规模ionoSolv预处理工艺的开发带来了希望。
