Qianqian Yang , Yihang Tian , Yin Cheng , Sitong Chen , Rui Zhai , Mingjie Jin
{"title":"对甲苯磺酸致密化预处理促进了玉米秸秆全组分的综合分离和利用","authors":"Qianqian Yang , Yihang Tian , Yin Cheng , Sitong Chen , Rui Zhai , Mingjie Jin","doi":"10.1016/j.seppur.2025.132207","DOIUrl":null,"url":null,"abstract":"<div><div>The comprehensive separation and utilization of whole components of lignocelluloses has received extensive attention in recent years. Compared with the traditional pretreatment method, <em>p</em>-TsOH pretreatment can well remove lignin and retain cellulose. This study developed a new pretreatment: Densifying Lignocellulosic biomass with Chemical (<em>p</em>-TsOH) followed by hydrothermal treatment (DLCH(<em>p</em>-TsOH)) to fractionate lignocellulose components with <em>p</em>-TsOH efficiently recycled. The results demonstrated that the total <em>p</em>-TsOH dosage for DLCH(<em>p</em>-TsOH) pretreatment was much lower (2.40 g/g biomass) than conventional <em>p</em>-TsOH pretreatment, with the lignin extraction increased by 12.30 %. The purity of the extracted lignin was as high as 97.60 %, in which 89.64 % β-O-4 bonds were preserved, demonstrating a high potential for valorization. Bioconversion efficiencies of DLCH(<em>p</em>-TsOH) pretreated corn stover were found to be high at a high solid loading of 20 %, generating a total sugar concentration of 184.70 g/L and later an ethanol titer as high as 85.40 g/L. The yield of <em>xylo</em>-oligosaccharides (XOS) obtained from the pretreatment hydrolysate by xylanase was 41.22 %, significantly higher than that of corn stover pretreated using traditional <em>p</em>-TsOH pretreatment (31.25 %). The <em>p</em>-TsOH was recycled and reused, with the lignin extraction above 70 % even after four cycles. Overall, compared with traditional <em>p</em>-TsOH-pretreated corn stover, the ethanol production from DLCH(<em>p</em>-TsOH)-pretreated corn stover increased by 20.83 %, the output of XOS was increased by 41.30 %, and the lignin extraction was enhanced by 12.30 %. This study indicates that DLCH pretreatment is an effective and environmentally sustainable method for fractionating corn stover to co-produce ethanol, lignin, and <em>xylo</em>-oligosaccharides.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"363 ","pages":"Article 132207"},"PeriodicalIF":9.0000,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Densification pretreatment with p-toluene sulfonic acid promotes comprehensive separation and utilization of whole components of corn stover\",\"authors\":\"Qianqian Yang , Yihang Tian , Yin Cheng , Sitong Chen , Rui Zhai , Mingjie Jin\",\"doi\":\"10.1016/j.seppur.2025.132207\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The comprehensive separation and utilization of whole components of lignocelluloses has received extensive attention in recent years. Compared with the traditional pretreatment method, <em>p</em>-TsOH pretreatment can well remove lignin and retain cellulose. This study developed a new pretreatment: Densifying Lignocellulosic biomass with Chemical (<em>p</em>-TsOH) followed by hydrothermal treatment (DLCH(<em>p</em>-TsOH)) to fractionate lignocellulose components with <em>p</em>-TsOH efficiently recycled. The results demonstrated that the total <em>p</em>-TsOH dosage for DLCH(<em>p</em>-TsOH) pretreatment was much lower (2.40 g/g biomass) than conventional <em>p</em>-TsOH pretreatment, with the lignin extraction increased by 12.30 %. The purity of the extracted lignin was as high as 97.60 %, in which 89.64 % β-O-4 bonds were preserved, demonstrating a high potential for valorization. Bioconversion efficiencies of DLCH(<em>p</em>-TsOH) pretreated corn stover were found to be high at a high solid loading of 20 %, generating a total sugar concentration of 184.70 g/L and later an ethanol titer as high as 85.40 g/L. The yield of <em>xylo</em>-oligosaccharides (XOS) obtained from the pretreatment hydrolysate by xylanase was 41.22 %, significantly higher than that of corn stover pretreated using traditional <em>p</em>-TsOH pretreatment (31.25 %). The <em>p</em>-TsOH was recycled and reused, with the lignin extraction above 70 % even after four cycles. Overall, compared with traditional <em>p</em>-TsOH-pretreated corn stover, the ethanol production from DLCH(<em>p</em>-TsOH)-pretreated corn stover increased by 20.83 %, the output of XOS was increased by 41.30 %, and the lignin extraction was enhanced by 12.30 %. This study indicates that DLCH pretreatment is an effective and environmentally sustainable method for fractionating corn stover to co-produce ethanol, lignin, and <em>xylo</em>-oligosaccharides.</div></div>\",\"PeriodicalId\":427,\"journal\":{\"name\":\"Separation and Purification Technology\",\"volume\":\"363 \",\"pages\":\"Article 132207\"},\"PeriodicalIF\":9.0000,\"publicationDate\":\"2025-02-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Separation and Purification Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1383586625008044\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Separation and Purification Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1383586625008044","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Densification pretreatment with p-toluene sulfonic acid promotes comprehensive separation and utilization of whole components of corn stover
The comprehensive separation and utilization of whole components of lignocelluloses has received extensive attention in recent years. Compared with the traditional pretreatment method, p-TsOH pretreatment can well remove lignin and retain cellulose. This study developed a new pretreatment: Densifying Lignocellulosic biomass with Chemical (p-TsOH) followed by hydrothermal treatment (DLCH(p-TsOH)) to fractionate lignocellulose components with p-TsOH efficiently recycled. The results demonstrated that the total p-TsOH dosage for DLCH(p-TsOH) pretreatment was much lower (2.40 g/g biomass) than conventional p-TsOH pretreatment, with the lignin extraction increased by 12.30 %. The purity of the extracted lignin was as high as 97.60 %, in which 89.64 % β-O-4 bonds were preserved, demonstrating a high potential for valorization. Bioconversion efficiencies of DLCH(p-TsOH) pretreated corn stover were found to be high at a high solid loading of 20 %, generating a total sugar concentration of 184.70 g/L and later an ethanol titer as high as 85.40 g/L. The yield of xylo-oligosaccharides (XOS) obtained from the pretreatment hydrolysate by xylanase was 41.22 %, significantly higher than that of corn stover pretreated using traditional p-TsOH pretreatment (31.25 %). The p-TsOH was recycled and reused, with the lignin extraction above 70 % even after four cycles. Overall, compared with traditional p-TsOH-pretreated corn stover, the ethanol production from DLCH(p-TsOH)-pretreated corn stover increased by 20.83 %, the output of XOS was increased by 41.30 %, and the lignin extraction was enhanced by 12.30 %. This study indicates that DLCH pretreatment is an effective and environmentally sustainable method for fractionating corn stover to co-produce ethanol, lignin, and xylo-oligosaccharides.
期刊介绍:
Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.