EFFECT OF SUBSTRATE CONCENTRATION IN FERMENTATIVE HYDROGEN PRODUCTION FROM SWEET SORGHUM EXTRACT

摘要：

The present study focuses on the influence of substrate concentration on the fermentative hydrogen production from the sugars of sweet sorghum extract, in a continuous stirred tank bioreactor. The reactor was operated at a Hydraulic Retention Time of 12 h and substrate concentrations ranging from 9895 to 20990 mg/L, in glucose equivalents. The maximum hydrogen production rate and yield were obtained at the concentration of 17000 mg carbohydrates/L and were 2.93 ± 0.09 L H2 /L reactor /d and 0.74 ± 0.02 mol H2/mol glucose consumed or 8.81 ± 0.02 LH2/kg sweet sorghum, respectively. The main metabolic product at all steady states was butyric acid while ethanol production was high at high substrate concentrations. The experiments showed that the hydrogen productivity depends significantly on the initial carbohydrates concentration which also influences the distribution of the metabolic products.

关键词： Sweet sorghum hydrogen substrate concentration continuous fermentation

作者: G. ANTONOPOULOU H.N. GAVALA I.V. SKIADAS G. LYBERATOS

作者单位: Department of Chemical Engineering, University of Patras, 1 Karatheodori st., 26500,Patras, Greece I Department of Chemical Engineering, University of Patras, 1 Karatheodori st., 26500,Patras, Greece I

会议类型: 国际会议

会议名称: 第三届废弃物与生物质高值化工程国际会议

会议地点: 北京

会议语种:英文

页码: 154-159

在线出版日期: 2010-05-17（万方平台首次上网日期，不代表论文的发表时间）