Ethylenediamine Enhances Ionic Liquid Pretreatment Performance at High Solid Loading
文献类型：期刊论文
| 作者 | Xu, Li2,3,5; Li, Wen-Chao4; Xin, Jiayu1; Zhang, Sen-Jia4; Li, Bing-Zhi2,3,5; Yuan, Ying-Jin2,3,5 |
| 刊名 | ACS SUSTAINABLE CHEMISTRY & ENGINEERING
 |
| 出版日期 | 2020-08-31 |
| 卷号 | 8期号:34页码:13007-13018 |
| 关键词 | Lignocellulose Ionic liquid pretreatment High biomass loading Sugar release Lignin fractionation Biofuels |
| ISSN号 | 2168-0485 |
| DOI | 10.1021/acssuschemeng.0c03884 |
| 英文摘要 | Higher biomass loading (>= 20% w/w) in pretreatment unit operations for lignocellulosic biorefineries will lead to a better economic feasibility and higher green efficiency. However, the industrial development behind high biomass loading in ionic liquid pretreatment has been hindered by unsatisfactory lignin fractionation and fermentable sugar release. Here, this study demonstrates that the addition of ethylenediamine (EDA) effectively improved glucose and xylose release in pretreatment using a 1-ethyl-3-methylimidazolium acetate ([Emim][OAc])-based system at corn stover loadings as high as 36% w/w under facile conditions. It was discovered that synergistic pretreatment with ILs and EDA pretreatment with a 10% v/v EDA ratio in [Emim] [OAc] was optimal for maximizing fermentable sugar yields, showing glucose yields of 94% and xylose yields of 48% based on untreated biomass; meanwhile, xylan loss was avoided due to low EDA loading. Additionally, the synergistic effect between [Emim] [OAc] and EDA further reduced cellulose crystallinity when compared to the single pretreatment with [Emim] [OAc] or EDA. In synergistic pretreatment, it was revealed that EDA played a crucial role in the cleavage of lignin-carbohydrate complex linkages, lignin relocalization, and removal at high solid loading, which provided "easy and simple" pathways for [Emim] [OAc] to attack crystalline domains of native cellulose. Also, there were more native beta-O-4 structures preserved in treated lignin after this synergistic pretreatment, offering a potential to make downstream lignin valorization even easier and more efficient. In addition, to achieve excellent performance, synergistic pretreatment could diminish requirements for pretreatment severity relative to single [Emim] [OAc] pretreatment, which reduced glucan loss as well as energy consumption in the pretreatment process. This new approach sheds further light on understanding solid-state pretreatment and forward bioconversion in biomass. |
| WOS关键词 | LIGNOCELLULOSIC BIOMASS ; ENZYMATIC-HYDROLYSIS ; CORN STOVER ; CELL-WALLS ; CELLULOSE ; LIGNIN ; ACID ; DELIGNIFICATION ; DECONSTRUCTION ; DIGESTIBILITY |
| 资助项目 | Tianjin Fund for Distinguished Young Scholars[19JCJQJC63300] ; National Natural Science Foundation of China[21622605] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000567778600029 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | Tianjin Fund for Distinguished Young Scholars ; National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/42046]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Li, Bing-Zhi |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China 2.Tianjin Univ, Key Lab Syst Bioengn, Minist Educ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China 3.Tianjin Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China 4.Tianjin Univ Sci & Technol, Minist Educ, Key Lab Ind Fermentat Microbiol, Tianjin 300457, Peoples R China 5.Tianjin Univ, Frontiers Sci Ctr Synthet Biol, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Li,Li, Wen-Chao,Xin, Jiayu,et al. Ethylenediamine Enhances Ionic Liquid Pretreatment Performance at High Solid Loading[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2020,8(34):13007-13018. |
| APA | Xu, Li,Li, Wen-Chao,Xin, Jiayu,Zhang, Sen-Jia,Li, Bing-Zhi,&Yuan, Ying-Jin.(2020).Ethylenediamine Enhances Ionic Liquid Pretreatment Performance at High Solid Loading.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,8(34),13007-13018. |
| MLA | Xu, Li,et al."Ethylenediamine Enhances Ionic Liquid Pretreatment Performance at High Solid Loading".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 8.34(2020):13007-13018. |
入库方式： OAI收割
来源：过程工程研究所
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