| Title |
Steam explosion pretreatment of rice straw to improve structural carbohydrates anaerobic digestibility for biomethanation |
| ID_Doc |
29708 |
| Authors |
Siddhu, MAH; Li, WW; He, YF; Liu, GQ; Chen, C |
| Title |
Steam explosion pretreatment of rice straw to improve structural carbohydrates anaerobic digestibility for biomethanation |
| Year |
2019 |
| Published |
Environmental Science And Pollution Research, 26.0, 22 |
| DOI |
10.1007/s11356-019-05382-w |
| Abstract |
Effectiveness of steam explosion (SE) pretreatment for deconstructing the complex structural carbohydrates (SC) and lignin recalcitrance properties of rice straw (RS) for conjunctive improvement of biofuel yield and waste valorization was evaluated. This work exhibited successful pretreatment of RS at a different pressure (1.2, 1.5, and 1.8MPa) and retention (3, 6, 9, and 12min) for enhancement of SC contribution to biomethane production. Regression analysis demonstrated that SE pretreatment efficiency improved at high-temperature and short-retention time for biodegradation of RS. Maximum cumulative methane yield (EMY) achieved 254.8mL/gvs at 1.2MPa (3min) of SE-treated RS with 62.7% of very significant improvement compared with untreated RS (156.6mL/gvs). Furthermore, solid fraction of xylose, arabinose, cellobiose, glucose, and acid-soluble lignin in SE-treated RS of 1.2MPa (3min) were biodegraded by 27.4%, 46.4%, 100%, 48.8%, and 14.1%, respectively, after anaerobic digestion. Therefore, SE pretreatment was an encouraging approach for enhancing SC conversion to biomethane and waste resource to circular economy. |
| Author Keywords |
Rice straw; Anaerobic digestion; Biodegradation; Modeling; Recalcitrance; Steam explosion; Treatment |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000477591700009 |
| WoS Category |
Environmental Sciences |
| Research Area |
Environmental Sciences & Ecology |
| PDF |
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