超声辅助离子液体预处理提取油棕纤维木质素和半纤维素
Sequential ultrasonication and deep eutectic solvent pretreatment to remove lignin and recover xylose from oil palm fronds.
机构信息
Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia.
Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia; Monash-Industry Palm Oil Education and Research Platform (MIPO), School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia.
出版信息
Ultrason Sonochem. 2019 Nov;58:104598. doi: 10.1016/j.ultsonch.2019.05.015. Epub 2019 May 14.
This study demonstrated the effect of two-pot sequential pretreatment, comprising of ultrasound assisted deep eutectic solvent (DES) with the aim to investigate the effects of ultrasound amplitude and duration in enhancing delignification. Oil palm fronds (OPF) were ultrasonicated in a water medium, followed by a pretreatment using DES (choline chloride:urea). Fourier transform infra-red spectroscopy, X-ray diffraction, field emission scanning electron microscope, Brunauer-Emmet-Teller and solubilised lignin concentration were conducted to confirm the effectiveness of ultrasound assisted DES on the pretreatment of OPF. The recommended ultrasound conditions were determined to be 70% amplitude and duration of 30 min, where the sequential DES pretreatment was able to reduce lignin content of OPF to 14.01%, while improving xylose recovery by 58%.
本研究展示了两步连续预处理的效果，包括超声辅助深共熔溶剂（DES），旨在研究超声幅度和时间对脱木质素的增强效果。油棕叶（OPF）在水介质中进行超声处理，然后用 DES（氯化胆碱：尿素）进行预处理。傅里叶变换红外光谱、X 射线衍射、场发射扫描电子显微镜、Brunauer-Emmet-Teller 和溶解木质素浓度的分析，证实了超声辅助 DES 对 OPF 预处理的有效性。确定的推荐超声条件为 70%的幅度和 30 分钟的时间，在此条件下，连续 DES 预处理能够将 OPF 的木质素含量降低到 14.01%，同时将木糖回收率提高 58%。
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