Ultrasound assisted alkaline pretreatment to enhance enzymatic saccharification of grass clipping
文献类型：期刊论文
| 作者 | Tang, Xiang; Wang, Siqi; Li, Fan; Zhang, Panyue; Jin, Shuguang; Tao, Xue; Ye, Junpei; Nabi, Mohammad; Wang, Hongjie |
| 刊名 | ENERGY CONVERSION AND MANAGEMENT
 |
| 出版日期 | 2017-10-01 |
| 卷号 | 149期号:0页码:409-415 |
| 关键词 | Ultrasound-alkaline Pretreatment Lignocellulosic Biomass Enzymatic Hydrolysis Sugar Yield Potential |
| 英文摘要 | Grass clipping, a cellulose-rich raw material, has great potential to produce biofuels, but must be firstly hydrolyzed to liberate fermentable sugars. In this study, grass clipping was pretreated with ultrasound (US), Ca (OH)(2), NaOH, US-Ca(OH)(2) and US-NaOH at relatively low temperature to enhance its enzymatic hydrolysis. The solubilization of hemicellulose and lignin, and crystallinity index of cellulose increased after US-alkaline pretreatment, leading to a significant increase of enzyme accessibility to cellulose. Compared with another four pretreatments, US-Ca(OH)(2) pretreatment of grass clipping showed the best improvement for reducing sugar yield. X-ray diffraction (XRD) determination and scanning electron microscope (SEM) observation showed that the crystallinity index of grass clipping increased and the grass clipping surface suffered from serious erosion after US-Ca(OH)(2) pretreatment. Then, the operating conditions of US-Ca(OH)(2) pretreatment and enzymatic hydrolysis were systematically optimized, and the suitable operating conditions were as follows: US power density of 0.65 W/ml, US pretreatment time of 30 min, Ca(OH)(2) concentration of 0.75%, pretreatment temperature of 75 degrees C, enzyme loading of 125 FPU/g, and hydrolysis time of 72 h. The reducing sugar yield of grass clipping pretreated by US-Ca(OH)(2) reached 414 mg/g, increasing by 3.5 times compared with that of raw grass clipping. The US-Ca(OH)(2) pretreatment of grass clipping at low temperature significantly enhanced the potential of grass clipping as a promising raw material to produce biofuels. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39608]  |
| 专题 | 生态环境研究中心_文献信息中心 |
| 推荐引用方式 GB/T 7714 | Tang, Xiang,Wang, Siqi,Li, Fan,et al. Ultrasound assisted alkaline pretreatment to enhance enzymatic saccharification of grass clipping[J]. ENERGY CONVERSION AND MANAGEMENT,2017,149(0):409-415. |
| APA | Tang, Xiang.,Wang, Siqi.,Li, Fan.,Zhang, Panyue.,Jin, Shuguang.,...&Wang, Hongjie.(2017).Ultrasound assisted alkaline pretreatment to enhance enzymatic saccharification of grass clipping.ENERGY CONVERSION AND MANAGEMENT,149(0),409-415. |
| MLA | Tang, Xiang,et al."Ultrasound assisted alkaline pretreatment to enhance enzymatic saccharification of grass clipping".ENERGY CONVERSION AND MANAGEMENT 149.0(2017):409-415. |
入库方式： OAI收割
来源：生态环境研究中心
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