Lu Zexiang, Wu Zhengguo, Fan Liwei, Zhang Hui, Liao Yiqiang, Zheng Deyong, Wang Siqun
Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China; Center for Renewable Carbon, University of Tennessee, Knoxville, TN 37996, USA.
Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
Bioresour Technol. 2016 Jan;199:423-426. doi: 10.1016/j.biortech.2015.09.048. Epub 2015 Sep 18.
A novel process to rapidly liquefy sawdust using reduced quantities of solvent, was successfully carried out via microwave-ultrasonic assisted technology (MUAT) in a sulphuric acid/polyethylene glycol 400-glycerol catalytic system. The influences of some key parameters on the liquefaction yield were investigated. The results showed that compared with traditional liquefaction, the introduction of MUAT allowed the solvent dosage to be halved and shortened the liquefaction time from 60 to 20 min. The liquefaction yield reached 91% under the optimal conditions. However, the influence on the yield of some parameters such as catalyst concentration, was similar to that of traditional liquefaction, indicating that the application of MUAT possibly only intensified heat and mass transfer rather than altering either the degradation mechanism or pathway. The introduction of MUAT as a process intensification technology has good industrial application potential for woody biomass liquefaction.
一种使用减少量溶剂快速液化锯末的新方法，通过微波-超声辅助技术（MUAT）在硫酸/聚乙二醇400-甘油催化体系中成功实现。研究了一些关键参数对液化产率的影响。结果表明，与传统液化相比，引入MUAT可使溶剂用量减半，并将液化时间从60分钟缩短至20分钟。在最佳条件下，液化产率达到91%。然而，某些参数如催化剂浓度对产率的影响与传统液化相似，这表明MUAT的应用可能只是强化了传热传质，而不是改变降解机制或途径。引入MUAT作为一种过程强化技术在木质生物质液化方面具有良好的工业应用潜力。
