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Unpolluted fractionation of wheat straw by steam explosion and ethanol extraction
文献类型：期刊论文
| 作者 | Chen Hongzhang ; Liu Liying
|
| 刊名 | BIORESOURCE TECHNOLOGY
 |
| 出版日期 | 2007-02-01 |
| 卷号 | 98期号:3页码:666-676 |
| 关键词 | fractionation steam explosion ethanol extraction |
| ISSN号 | 0960-8524 |
| 其他题名 | Bioresour. Technol. |
| 中文摘要 | An unpolluted process of wheat straw fractionation by steam explosion coupled with ethanol extraction was studied. The wheat straw was steam exploded for 4.5 min with moisture of 34.01%, a pressure of 1.5 MPa without acid or alkali. Hemicellulose sugars were recovered by water countercurrent extraction and decolored with chelating ion exchange resin D412. The gas chromatography (GC) and high-performance liquid chromatography (HPLC) analysis results indicated that there were organic acids in the hemicellulose sugars and the ratio of monosaccharides to oligosaccharides was 1:9 and the main component, xylose, was 85.9% in content. The total recovery rate of hemicellulose was 80%. Water washed materials were subsequently extracted with ethanol. The optimum extraction conditions in this work were 40% ethanol, fiber/liquor ratio 1:50 (w/v), severity log(R) = 3.657 (180 degrees C for 20 min), 0.1% NaOH. The lignin yield was 75% by acid precipitation and 85% ethanol solvent was recovered. The lignin was purified using Bjorkman method. Infrared spectrometry (IR) results indicated that the lignin belonged to GSH (guaiacyl (G) syringyl (S) and p-hydroxyphenyl (H)) lignin and its purity rate reached 85.3%. The cellulose recovery rate was 94% and the results of electron spectroscopy for chemical analysis (ESCA) and infrared spectrometry (IR) showed that hemicellulose and lignin content decreased after steam explosion and ethanol extraction. (c) 2006 Elsevier Ltd. All rights reserved. |
| 英文摘要 | An unpolluted process of wheat straw fractionation by steam explosion coupled with ethanol extraction was studied. The wheat straw was steam exploded for 4.5 min with moisture of 34.01%, a pressure of 1.5 MPa without acid or alkali. Hemicellulose sugars were recovered by water countercurrent extraction and decolored with chelating ion exchange resin D412. The gas chromatography (GC) and high-performance liquid chromatography (HPLC) analysis results indicated that there were organic acids in the hemicellulose sugars and the ratio of monosaccharides to oligosaccharides was 1:9 and the main component, xylose, was 85.9% in content. The total recovery rate of hemicellulose was 80%. Water washed materials were subsequently extracted with ethanol. The optimum extraction conditions in this work were 40% ethanol, fiber/liquor ratio 1:50 (w/v), severity log(R) = 3.657 (180 degrees C for 20 min), 0.1% NaOH. The lignin yield was 75% by acid precipitation and 85% ethanol solvent was recovered. The lignin was purified using Bjorkman method. Infrared spectrometry (IR) results indicated that the lignin belonged to GSH (guaiacyl (G) syringyl (S) and p-hydroxyphenyl (H)) lignin and its purity rate reached 85.3%. The cellulose recovery rate was 94% and the results of electron spectroscopy for chemical analysis (ESCA) and infrared spectrometry (IR) showed that hemicellulose and lignin content decreased after steam explosion and ethanol extraction. (c) 2006 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Technology |
| 类目[WOS] | Agricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels |
| 研究领域[WOS] | Agriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels |
| 关键词[WOS] | ASSISTED BIOMASS FRACTIONATION ; POPULUS-TREMULOIDES ; BY-PRODUCTS ; PRETREATMENT ; SOLVENT ; WOOD ; CELLULOSE ; DELIGNIFICATION ; AUTOHYDROLYSIS ; TECHNOLOGY |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000241710400027 |
| 公开日期 | 2013-10-15 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3289]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | Chinese Acad Sci, State Key Lab Biochem Engn, Inst Proc Engn, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen Hongzhang,Liu Liying. Unpolluted fractionation of wheat straw by steam explosion and ethanol extraction[J]. BIORESOURCE TECHNOLOGY,2007,98(3):666-676. |
| APA | Chen Hongzhang,&Liu Liying.(2007).Unpolluted fractionation of wheat straw by steam explosion and ethanol extraction.BIORESOURCE TECHNOLOGY,98(3),666-676. |
| MLA | Chen Hongzhang,et al."Unpolluted fractionation of wheat straw by steam explosion and ethanol extraction".BIORESOURCE TECHNOLOGY 98.3(2007):666-676. |
入库方式： OAI收割
来源：过程工程研究所
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