Loading...
Please wait, while we are loading the content...
Similar Documents
Pretreatment of Lignocellulosic Biomass with 1-Ethyl-3-methylimidazolium Acetate for Its Eventual Valorization by Anaerobic Digestion
| Content Provider | MDPI |
|---|---|
| Author | Marin-Batista, Jose D. Mohedano, Angel F. de la Rubia, Angeles |
| Copyright Year | 2021 |
| Description | This study assessed the breakdown of lignocellulosic biomass (LB) with the ionic liquid (IL) 1-ethyl-3-methylimidazolium acetate ([Emim][Ac]) as a pretreatment to increase the methane yield. The pretreatment was conducted for wheat straw (WS), barley straw (BS), and grape stem (GS) at 120 °C for 120 min, using several LB to [Emim][Ac] ratios (1:1, 1:3, and 1:5 w/w). Pretreatment significantly disrupted the lignocellulose matrix of each biomass into soluble sugars. GS showed the highest sugar yield, which was followed by WS, while BS was slightly hydrolyzed (175.3 ± 2.3, 158.2 ± 5.2, and 51.1 ± 3.1 mg glucose $g^{–1}$ biomass, respectively). Likewise, the pretreatment significantly reduced the cellulose crystallinity index (CrI) of the resulting solid fractions of GS and WS by 15% and 9%, respectively, but slightly affected the CrI of BS (5%). Thus, BMP tests were only carried out for raw and hydrothermally and [Emim][Ac] (1:5) pretreated GS and WS. The untreated GS and WS showed similar methane yields to those achieved for the solid fraction obtained after pretreatment with an LB to [Emim][Ac] ratio of 1:5 (219 ± 10 and 368 ± 1 mL $CH_{4}$ $g^{–1}$ VS, respectively). The methane production of the solid plus liquid fraction obtained after IL pretreatment increased by 1.61- and 1.34-fold compared to the raw GS and WS, respectively. |
| Starting Page | 118 |
| e-ISSN | 20799276 |
| DOI | 10.3390/resources10120118 |
| Journal | Resources |
| Issue Number | 12 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-11-23 |
| Access Restriction | Open |
| Subject Keyword | Resources Paper and Wood Anaerobic Digestion Ionic Liquid Pretreatment Lignocellulosic Waste Thermal Pretreatment |
| Content Type | Text |
| Resource Type | Article |
