Fast and Selective Degradation of Biomass for Xylose, Glucose and Lignin under Mild Conditions
The conversion of lignocellulose into valuable chemicals has been recognized as the key technology in green chemistry. However, selective degradation of hemicellulose and cellulose with the production of lignin is still a challenge. Therefore, a two-step process has been developed to degrade corncob...
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| Format: | Article |
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MDPI AG
2023-04-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/8/3306 |
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| author | Shangzhong Zhang Yi Duan Changchang Teng Hongdong Quan Xiuguo Yang Hongyan Li Xiaohe Li Lifeng Yan |
| author_facet | Shangzhong Zhang Yi Duan Changchang Teng Hongdong Quan Xiuguo Yang Hongyan Li Xiaohe Li Lifeng Yan |
| author_sort | Shangzhong Zhang |
| collection | DOAJ |
| description | The conversion of lignocellulose into valuable chemicals has been recognized as the key technology in green chemistry. However, selective degradation of hemicellulose and cellulose with the production of lignin is still a challenge. Therefore, a two-step process has been developed to degrade corncob into xylose and glucose under mild conditions. At first, the corncob was treated with the lower concentration of zinc chloride aqueous solution (30–55 w%) at 95 °C with a short reaction time (8–12 min) and 30.4 w% (selectivity = 89%) of xylose obtained with a solid residue of the composite of cellulose and lignin. Next, the solid residue was treated with a high concentration of zinc chloride aqueous solution (65–85 w%) at 95 °C for about 10 min, and 29.4 w% (selectivity = 92%) of glucose can be obtained. Combining the two steps, the total yield of xylose is 97%, while glucose is 95%. In addition, high pure lignin can be obtained simultaneously, which was confirmed using HSQC studies. Furthermore, for the solid residue of the first-step reaction, a ternary deep eutectic solvent (DES) (choline chloride/oxalic acid/1,4-butanediol, ChCl/OA/BD) has been used to separate the cellulose and lignin efficiently, and high-quality cellulose (Re-C) and lignin (Re-L) were obtained. Furthermore, it provides a simple method to disassemble the lignocellulose for monosaccharides, lignin, and cellulose. |
| first_indexed | 2024-03-11T04:42:24Z |
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| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T04:42:24Z |
| publishDate | 2023-04-01 |
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| record_format | Article |
| series | Molecules |
| spelling | doaj.art-3f990069aeba4888be709dd13fd780bb2023-11-17T20:37:05ZengMDPI AGMolecules1420-30492023-04-01288330610.3390/molecules28083306Fast and Selective Degradation of Biomass for Xylose, Glucose and Lignin under Mild ConditionsShangzhong Zhang0Yi Duan1Changchang Teng2Hongdong Quan3Xiuguo Yang4Hongyan Li5Xiaohe Li6Lifeng Yan7Department of Chemical Physics, University of Science and Technology of China, Jinzai Road 96, Hefei 230026, ChinaDepartment of Chemical Physics, University of Science and Technology of China, Jinzai Road 96, Hefei 230026, ChinaDepartment of Chemical Physics, University of Science and Technology of China, Jinzai Road 96, Hefei 230026, ChinaDepartment of Chemical Physics, University of Science and Technology of China, Jinzai Road 96, Hefei 230026, ChinaInner Mongolia Key Laboratory of Polyol Chemical New Material Enterprise, Chifeng Ruiyang Chemical Co., Ltd., Pingzhuang, Chifeng 024076, ChinaInner Mongolia Key Laboratory of Polyol Chemical New Material Enterprise, Chifeng Ruiyang Chemical Co., Ltd., Pingzhuang, Chifeng 024076, ChinaInner Mongolia Key Laboratory of Polyol Chemical New Material Enterprise, Chifeng Ruiyang Chemical Co., Ltd., Pingzhuang, Chifeng 024076, ChinaDepartment of Chemical Physics, University of Science and Technology of China, Jinzai Road 96, Hefei 230026, ChinaThe conversion of lignocellulose into valuable chemicals has been recognized as the key technology in green chemistry. However, selective degradation of hemicellulose and cellulose with the production of lignin is still a challenge. Therefore, a two-step process has been developed to degrade corncob into xylose and glucose under mild conditions. At first, the corncob was treated with the lower concentration of zinc chloride aqueous solution (30–55 w%) at 95 °C with a short reaction time (8–12 min) and 30.4 w% (selectivity = 89%) of xylose obtained with a solid residue of the composite of cellulose and lignin. Next, the solid residue was treated with a high concentration of zinc chloride aqueous solution (65–85 w%) at 95 °C for about 10 min, and 29.4 w% (selectivity = 92%) of glucose can be obtained. Combining the two steps, the total yield of xylose is 97%, while glucose is 95%. In addition, high pure lignin can be obtained simultaneously, which was confirmed using HSQC studies. Furthermore, for the solid residue of the first-step reaction, a ternary deep eutectic solvent (DES) (choline chloride/oxalic acid/1,4-butanediol, ChCl/OA/BD) has been used to separate the cellulose and lignin efficiently, and high-quality cellulose (Re-C) and lignin (Re-L) were obtained. Furthermore, it provides a simple method to disassemble the lignocellulose for monosaccharides, lignin, and cellulose.https://www.mdpi.com/1420-3049/28/8/3306lignocellulosecorncobglucosexyloselignin |
| spellingShingle | Shangzhong Zhang Yi Duan Changchang Teng Hongdong Quan Xiuguo Yang Hongyan Li Xiaohe Li Lifeng Yan Fast and Selective Degradation of Biomass for Xylose, Glucose and Lignin under Mild Conditions Molecules lignocellulose corncob glucose xylose lignin |
| title | Fast and Selective Degradation of Biomass for Xylose, Glucose and Lignin under Mild Conditions |
| title_full | Fast and Selective Degradation of Biomass for Xylose, Glucose and Lignin under Mild Conditions |
| title_fullStr | Fast and Selective Degradation of Biomass for Xylose, Glucose and Lignin under Mild Conditions |
| title_full_unstemmed | Fast and Selective Degradation of Biomass for Xylose, Glucose and Lignin under Mild Conditions |
| title_short | Fast and Selective Degradation of Biomass for Xylose, Glucose and Lignin under Mild Conditions |
| title_sort | fast and selective degradation of biomass for xylose glucose and lignin under mild conditions |
| topic | lignocellulose corncob glucose xylose lignin |
| url | https://www.mdpi.com/1420-3049/28/8/3306 |
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