The effect of mechanical pretreatment on the anaerobic digestion of Hybrid Pennisetum
The effect of mechanical pretreatment on the anaerobic digestion of Hybrid Pennisetum
复制标题
机械预处理对杂交狼尾草厌氧消化的影响
DOI：
10.1016/j.fuel.2019.04.134
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发表时间：
2019-09-15
期刊：
影响因子：
7.4
通讯作者：
Yuan, Zhenhong
中科院分区：
文献类型：
--
作者：
Kang, Xihui;Zhang, Yi;Yuan, Zhenhong
研究了不同粒径对杂交狼尾草厌氧消化性能的影响。杂交狼尾草研磨和筛分，以提供不同的颗粒大小之间的0.180和1.000毫米。不同的颗粒大小的表征表明，地面杂交狼尾草Wltered碳水化合物含量的组合物减少和木质素含量增加，随着颗粒大小的减少。在粒径为0.250- 0.380 mm时，最高比甲烷产率为291.9 +/- 4.7 mL CH4.g（-1）VS，当粒径减小到0.250 mm以下时，该值趋于稳定。从该过程的净能量输出计算为300千瓦时/吨VS。因此，粉碎被证明是提高杂交狼尾草的厌氧发酵效率和能量输出。
This study investigated the effect of particle size on the performance of anaerobic digestion of Hybrid Pennisetum. Hybrid Pennisetum was ground and sieved to provide different particle sizes between 0.180 and 1.000 mm. Characterization of the different particle sizes suggested that the composition of ground Hybrid Pennisetum Wltered-carbohydrate content decreased and lignin content increased with a decrease in particle size. The highest specific methane yield was 291.9 +/- 4.7 mL CH4.g(-1) VS at a particle size of 0.250-0.380mm and this value plateaued as the particle size was reduced to below 0.250 mm. Excessive size reduction did not improve the methane yield but did result in a reduction of digestion time by 28.6-35.7%. The net energy output from the process was calculated at 300 kWh/t VS. Therefore, grinding was proved to enhance the anaerobic fermentation efficiency and energy output of Hybrid Pennisetum.