Blofuels generation from sweet sorghum: Fermentative hydrogen production and anaerobic digestion of the remaining biomass
Blofuels generation from sweet sorghum: Fermentative hydrogen production and anaerobic digestion of the remaining biomass
复制标题
DOI：
10.1016/j.biortech.2006.11.048
复制
发表时间：
2008-01-01
影响因子：
11.4
通讯作者：
Lyberatos, Gerasimos
中科院分区：
文献类型：
--
作者：
Antonopoulou, Georgia;Gavala, Hariklia N.;Lyberatos, Gerasimos
本研究的重点是开发甜高粱生物质作为氢气和甲烷的来源。研究了不同水力停留时间（HRT）下甜高粱提取物糖发酵产氢的特性。随后从产氢过程的流出物的甲烷产量和提取过程后剩余固体的甲烷潜力也进行了评估。水力停留时间为6 h时产氢速率最高（2550 ml H2/d），水力停留时间为12 h时每kg高粱生物质产氢量最高（10.41 H2/kg甜高粱）。结果表明，产氢反应器的流出物是一种理想的产甲烷底物，产甲烷量约为291 CH（4）/kg甜高粱。厌氧消化后的提取过程中产生的固体残留物78 1 CH 4/kg的甜高粱。这项工作表明，生物制氢可以非常有效地与随后的甲烷生产步骤相结合，甜高粱可能是一种理想的组合气体生物燃料生产的底物。(C)2006爱思唯尔有限公司保留所有权利。
The present study focuses on the exploitation of sweet sorghum biomass as a source for hydrogen and methane. Fermentative hydrogen production from the sugars of sweet sorghum extract was investigated at different hydraulic retention times (HRT). The subsequent methane production from the effluent of the hydrogenogenic process and the methane potential of the remaining solids after the extraction process were assessed as well. The highest hydrogen production rate (2550 ml H(2)/d) was obtained at the HRT of 6 h while the highest yield of hydrogen produced per kg of sorghum biomass was achieved at the HRT of 12 h (10.41 H(2)/kg sweet sorghum). It has been proved that the effluent from the hydrogenogenic reactor is an ideal substrate for methane production with approximately 29 1 CH(4)/kg of sweet sorghum. Anaerobic digestion of the solid residues after the extraction process yielded 78 1 CH4/kg of sweet sorghum. This work demonstrated that biohydrogen production can be very efficiently coupled with a subsequent step of methane production and that sweet sorghum could be an ideal substrate for a combined gaseous biofuels production. (C) 2006 Elsevier Ltd. All rights reserved.