{"title":"利用高粱生物质提高生物乙醇生产效率的节能工艺：实现循环经济的未来之路","authors":"Shobana Srinivasan, Sivakumar Venkatachalam","doi":"10.1007/s13399-024-06083-2","DOIUrl":null,"url":null,"abstract":"<p>Microwave-assisted deep eutectic solvent (DES) pretreatment using choline chloride-formic acid (ChCl: FA) is investigated as a rapid method for lignocellulose fractionation in sorghum biomass for bioethanol production. This study focuses on enhancing cellulose retention and its digestibility while effectively removing the majority of lignin and hemicelluloses. Optimal conditions (ChCl: FA ratio of 1:3, 20 min, 250 W) resulted in 98% cellulose retention and 97% purity, respectively. Furthermore, X-ray diffraction (XRD) and scanning electron microscopy (SEM) were employed to investigate the morphological and crystallinity changes in the biomass following pretreatment. The XRD and SEM characterizations demonstrated that the structural alterations and decreased crystallinity of the pretreated sorghum biomass significantly enhanced cellulose digestibility. Compared to conventional method, this process exhibited a fourfold reduction in energy consumption. The synergetic effect of high cellulose purity and yield led to a maximum ethanol yield of 0.57 g/g cellulose at minimal enzyme dosage (10 FPU) and a short fermentation time (27 h). GC–MS analysis confirms the purity of the obtained bioethanol. The proposed method paves the way for substantial economic benefits in biorefinery, supporting the principles of a circular economy by promoting sustainable and efficient resource utilization.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\n","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"6 1","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"An energy-efficient process for enhanced production of bioethanol from sorghum biomass: a futuristic approach towards circular economy\",\"authors\":\"Shobana Srinivasan, Sivakumar Venkatachalam\",\"doi\":\"10.1007/s13399-024-06083-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Microwave-assisted deep eutectic solvent (DES) pretreatment using choline chloride-formic acid (ChCl: FA) is investigated as a rapid method for lignocellulose fractionation in sorghum biomass for bioethanol production. This study focuses on enhancing cellulose retention and its digestibility while effectively removing the majority of lignin and hemicelluloses. Optimal conditions (ChCl: FA ratio of 1:3, 20 min, 250 W) resulted in 98% cellulose retention and 97% purity, respectively. Furthermore, X-ray diffraction (XRD) and scanning electron microscopy (SEM) were employed to investigate the morphological and crystallinity changes in the biomass following pretreatment. The XRD and SEM characterizations demonstrated that the structural alterations and decreased crystallinity of the pretreated sorghum biomass significantly enhanced cellulose digestibility. Compared to conventional method, this process exhibited a fourfold reduction in energy consumption. The synergetic effect of high cellulose purity and yield led to a maximum ethanol yield of 0.57 g/g cellulose at minimal enzyme dosage (10 FPU) and a short fermentation time (27 h). GC–MS analysis confirms the purity of the obtained bioethanol. The proposed method paves the way for substantial economic benefits in biorefinery, supporting the principles of a circular economy by promoting sustainable and efficient resource utilization.</p><h3 data-test=\\\"abstract-sub-heading\\\">Graphical Abstract</h3>\\n\",\"PeriodicalId\":488,\"journal\":{\"name\":\"Biomass Conversion and Biorefinery\",\"volume\":\"6 1\",\"pages\":\"\"},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2024-09-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Biomass Conversion and Biorefinery\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1007/s13399-024-06083-2\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biomass Conversion and Biorefinery","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s13399-024-06083-2","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
An energy-efficient process for enhanced production of bioethanol from sorghum biomass: a futuristic approach towards circular economy
Microwave-assisted deep eutectic solvent (DES) pretreatment using choline chloride-formic acid (ChCl: FA) is investigated as a rapid method for lignocellulose fractionation in sorghum biomass for bioethanol production. This study focuses on enhancing cellulose retention and its digestibility while effectively removing the majority of lignin and hemicelluloses. Optimal conditions (ChCl: FA ratio of 1:3, 20 min, 250 W) resulted in 98% cellulose retention and 97% purity, respectively. Furthermore, X-ray diffraction (XRD) and scanning electron microscopy (SEM) were employed to investigate the morphological and crystallinity changes in the biomass following pretreatment. The XRD and SEM characterizations demonstrated that the structural alterations and decreased crystallinity of the pretreated sorghum biomass significantly enhanced cellulose digestibility. Compared to conventional method, this process exhibited a fourfold reduction in energy consumption. The synergetic effect of high cellulose purity and yield led to a maximum ethanol yield of 0.57 g/g cellulose at minimal enzyme dosage (10 FPU) and a short fermentation time (27 h). GC–MS analysis confirms the purity of the obtained bioethanol. The proposed method paves the way for substantial economic benefits in biorefinery, supporting the principles of a circular economy by promoting sustainable and efficient resource utilization.
期刊介绍：
Biomass Conversion and Biorefinery presents articles and information on research, development and applications in thermo-chemical conversion; physico-chemical conversion and bio-chemical conversion, including all necessary steps for the provision and preparation of the biomass as well as all possible downstream processing steps for the environmentally sound and economically viable provision of energy and chemical products.
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