| 亚硫酸氢镁预处理麦秆废液中同步分离木质素磺酸盐和低聚木糖的方法研究 |
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| 引用本文： | 刘蕾,任继巍,刘鑫露,郑兆娟,李鑫,欧阳嘉. 亚硫酸氢镁预处理麦秆废液中同步分离木质素磺酸盐和低聚木糖的方法研究[J]. 化工学报, 2018, 69(8): 3678-3685. DOI: 10.11949/j.issn.0438-1157.20180064 |
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| 作者姓名： | 刘蕾 任继巍 刘鑫露 郑兆娟 李鑫 欧阳嘉 |
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| 作者单位： | 1.南京林业大学化学工程学院, 江苏 南京 210037;2.南京科技职业学院生物与环境学院, 江苏 南京 210048;3.南京林业大学林学院, 江苏 南京 210037;4.林木遗传与生物技术省部共建教育部重点实验室, 江苏 南京 210037 |
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| 基金项目： | 国家自然科学基金项目（51561145015）；江苏省高校自然科学研究重大项目（16KJA220004）；江苏省高校优势学科建设工程资助项目（PAPD）。 |
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| 摘 要： | 分别采用有机溶剂萃取法、超滤法、大孔树脂吸附法、离子交换法分离提取亚硫酸氢镁预处理麦秆废液中的木质素磺酸盐和低聚木糖。研究结果表明超滤法不能达到分离目的，有机溶剂沉淀和大孔树脂吸附可实现木质素磺酸镁的纯化，采用D380离子交换树脂进行离子交换层析可将废液中低聚木糖和木质素磺酸镁完全分离，回收所得低聚木糖和木质素磺酸盐纯度分别可达63.95%和91.28%。因此，D380树脂固定床离子交换法是一种简单有效的提取废液中高附加值产品的方法，可实现亚硫酸氢镁预处理麦秆废液的高值化利用，具有强劲的市场应用潜力。
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| 关 键 词： | 预处理废液 木质素磺酸盐 低聚木糖 超滤 大孔树脂 离子交换 |
| 收稿时间： | 2018-01-16 |
| 修稿时间： | 2018-04-16 |
Study of simultaneous separation of lignosulfonate and xylooligosaccharides from magnesium bisulfite pretreated wheat straw spent liquor |
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| LIU Lei,REN Jiwei,LIU Xinlu,ZHENG Zhaojuan,LI Xin,OUYANG Jia. Study of simultaneous separation of lignosulfonate and xylooligosaccharides from magnesium bisulfite pretreated wheat straw spent liquor[J]. Journal of Chemical Industry and Engineering(China), 2018, 69(8): 3678-3685. DOI: 10.11949/j.issn.0438-1157.20180064 |
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| Authors: | LIU Lei REN Jiwei LIU Xinlu ZHENG Zhaojuan LI Xin OUYANG Jia |
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| Affiliation: | 1.College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, China;2.School of Biology and Environment, Nanjing Polytechnic Institute, Nanjing 210048, Jiangsu, China;3.College of Forestry Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, China;4.Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, Jiangsu, China |
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| Abstract: | Using solvent extraction, ultrafiltration, macroporous resin adsorption, and ion exchange methods, lignosulfonate and xylooligosaccharides were separated from magnesium bisulfite pretreated wheat straw spent liquor. The results showed that the ultrafiltration cannot achieve the purpose of separation. The magnesium lignosulfonate can be purified by organic solvent extraction and macroporous resin adsorption. D380 ion exchange resin was selected to completely separate xylooligosaccharides and lignosulfonate by ion exchange fixed bed simultaneously, the purity of recovered xylooligosaccharides and lignosulfonate could reach 63.95% and 91.28% respectively. Thus, ion-exchange fixed bed packed with D380 is an effective and simple way to recover high-valued chemicals from spent liquor, which achieved complete utilization of magnesium bisulfite pretreated wheat straw spent liquor with robust market prospects. |
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| Keywords: | pretreated spent liquor lignosulfonate xylooligosaccharide ultrafiltration macroporous resin ion exchange |
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