表面活性剂类型对离子液体预处理提高稻草脱木质素的影响。
Impact of surfactant type for ionic liquid pretreatment on enhancing delignification of rice straw.
机构信息
School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, China; Key Laboratory of Urban Environmental and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China; Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan.
School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, China.
出版信息
Bioresour Technol. 2017 Mar;227:388-392. doi: 10.1016/j.biortech.2016.11.085. Epub 2016 Nov 22.
This work describes an environmentally friendly method for pretreating rice straw by using 1-Allyl-3-methylimidazolium chloride ([AMIM]Cl) as an ionic liquid (IL) assisted by surfactants. The impacts of surfactant type (including nonionic-, anionic-, cationic- and bio-surfactant) on the ionic liquid pretreatment were investigated. The bio-surfactant+IL-pretreated rice straw showed significant lignin removal (26.14%) and exhibited higher cellulose conversion (36.21%) than the untreated (16.16%) rice straw. The cellulose conversion of the rice straw pretreated with bio-surfactant+IL was the highest and the lowest was observed for pretreated with cationic-surfactant+IL. Untreated and pretreated rice straw was thoroughly characterized through SEM and AFM. In conclusion, the results provided an effective and environmental method for pretreating lignocellulosic substrates by using green solvent (ionic liquid) and biodegradable bio-surfactant.
这项工作描述了一种使用 1-烯丙基-3-甲基氯化咪唑([AMIM]Cl)作为离子液体(IL)，并辅以表面活性剂预处理稻草的环保方法。考察了表面活性剂类型(包括非离子型、阴离子型、阳离子型和生物型表面活性剂)对离子液体预处理的影响。生物型表面活性剂+IL 预处理的稻草表现出显著的木质素去除率(26.14%)，且纤维素转化率(36.21%)高于未处理的稻草(16.16%)。生物型表面活性剂+IL 预处理的稻草的纤维素转化率最高，而用阳离子型表面活性剂+IL 预处理的稻草的纤维素转化率最低。通过 SEM 和 AFM 对未处理和预处理的稻草进行了全面的表征。总之，该结果为使用绿色溶剂(离子液体)和可生物降解的生物型表面活性剂预处理木质纤维素基质提供了一种有效且环保的方法。
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