Toward Extensive Utilization of Pulping Liquor from Chemical–Mechanical Pulping Process of Wheat Straw in Biorefinery View
Extensive utilization of renewable biomass is crucial for the progress of carbon neutral and carbon peak implementation. Wheat straw, as an important by-product of crops, is hardly ever efficiently utilized by conventional processes. Here, we proposed a mild acid-coupled-with-enzymatic-treatment pro...
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MDPI AG
2024-11-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/29/22/5368 |
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| author | Ning Sun Xingxiang Ji Zhongjian Tian Baobin Wang |
| author_facet | Ning Sun Xingxiang Ji Zhongjian Tian Baobin Wang |
| author_sort | Ning Sun |
| collection | DOAJ |
| description | Extensive utilization of renewable biomass is crucial for the progress of carbon neutral and carbon peak implementation. Wheat straw, as an important by-product of crops, is hardly ever efficiently utilized by conventional processes. Here, we proposed a mild acid-coupled-with-enzymatic-treatment process to realize the utilization of lignin and hemicelluloses from pulping liquor on the basis of the chemical–mechanical pulping process. The pulping liquor was treated with acid first to precipitate lignin, and it was further hydrolyzed with xylanase to obtain XOSs. The recovered lignin was characterized by FT-IR, 2D-HSQC, GPC, etc. It was found that lignin undergoes depolymerization and condensation during acid treatment. Also, saccharide loss enhanced with the decrease in pH due to the presence of the LCC structure. As a result, an optimized pH of 4 for the acid treatment ensured that the removal rate of lignin and loss rate of polysaccharides achieved 77.15% and 6.13%, respectively. Moreover, further xylanase treatment of the pulping liquor attained a recovery rate of 51.87% for XOSs. The study presents a new insight for the efficient utilization of lignin and hemicellulose products from non-woody materials in the prevailing biorefinery concept. |
| format | Article |
| id | doaj-art-69ce9ea349984ed08055623c9f504be0 |
| institution | OA Journals |
| issn | 1420-3049 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj-art-69ce9ea349984ed08055623c9f504be02025-08-20T02:05:06ZengMDPI AGMolecules1420-30492024-11-012922536810.3390/molecules29225368Toward Extensive Utilization of Pulping Liquor from Chemical–Mechanical Pulping Process of Wheat Straw in Biorefinery ViewNing Sun0Xingxiang Ji1Zhongjian Tian2Baobin Wang3School of Bionengneering, Qilu University of Technology, Jinan 250013, ChinaState Key Laboratory of Biobased Material & Green Papermaking, Qilu University of Technology, Jinan 250013, ChinaSchool of Bionengneering, Qilu University of Technology, Jinan 250013, ChinaState Key Laboratory of Biobased Material & Green Papermaking, Qilu University of Technology, Jinan 250013, ChinaExtensive utilization of renewable biomass is crucial for the progress of carbon neutral and carbon peak implementation. Wheat straw, as an important by-product of crops, is hardly ever efficiently utilized by conventional processes. Here, we proposed a mild acid-coupled-with-enzymatic-treatment process to realize the utilization of lignin and hemicelluloses from pulping liquor on the basis of the chemical–mechanical pulping process. The pulping liquor was treated with acid first to precipitate lignin, and it was further hydrolyzed with xylanase to obtain XOSs. The recovered lignin was characterized by FT-IR, 2D-HSQC, GPC, etc. It was found that lignin undergoes depolymerization and condensation during acid treatment. Also, saccharide loss enhanced with the decrease in pH due to the presence of the LCC structure. As a result, an optimized pH of 4 for the acid treatment ensured that the removal rate of lignin and loss rate of polysaccharides achieved 77.15% and 6.13%, respectively. Moreover, further xylanase treatment of the pulping liquor attained a recovery rate of 51.87% for XOSs. The study presents a new insight for the efficient utilization of lignin and hemicellulose products from non-woody materials in the prevailing biorefinery concept.https://www.mdpi.com/1420-3049/29/22/5368wheat strawchemical–mechanical pulpacid treatmentligninxylo-oligosaccharides (XOSs) |
| spellingShingle | Ning Sun Xingxiang Ji Zhongjian Tian Baobin Wang Toward Extensive Utilization of Pulping Liquor from Chemical–Mechanical Pulping Process of Wheat Straw in Biorefinery View Molecules wheat straw chemical–mechanical pulp acid treatment lignin xylo-oligosaccharides (XOSs) |
| title | Toward Extensive Utilization of Pulping Liquor from Chemical–Mechanical Pulping Process of Wheat Straw in Biorefinery View |
| title_full | Toward Extensive Utilization of Pulping Liquor from Chemical–Mechanical Pulping Process of Wheat Straw in Biorefinery View |
| title_fullStr | Toward Extensive Utilization of Pulping Liquor from Chemical–Mechanical Pulping Process of Wheat Straw in Biorefinery View |
| title_full_unstemmed | Toward Extensive Utilization of Pulping Liquor from Chemical–Mechanical Pulping Process of Wheat Straw in Biorefinery View |
| title_short | Toward Extensive Utilization of Pulping Liquor from Chemical–Mechanical Pulping Process of Wheat Straw in Biorefinery View |
| title_sort | toward extensive utilization of pulping liquor from chemical mechanical pulping process of wheat straw in biorefinery view |
| topic | wheat straw chemical–mechanical pulp acid treatment lignin xylo-oligosaccharides (XOSs) |
| url | https://www.mdpi.com/1420-3049/29/22/5368 |
| work_keys_str_mv | AT ningsun towardextensiveutilizationofpulpingliquorfromchemicalmechanicalpulpingprocessofwheatstrawinbiorefineryview AT xingxiangji towardextensiveutilizationofpulpingliquorfromchemicalmechanicalpulpingprocessofwheatstrawinbiorefineryview AT zhongjiantian towardextensiveutilizationofpulpingliquorfromchemicalmechanicalpulpingprocessofwheatstrawinbiorefineryview AT baobinwang towardextensiveutilizationofpulpingliquorfromchemicalmechanicalpulpingprocessofwheatstrawinbiorefineryview |