Thermodynamic analysis of lignocellulosic biofuel production via a biochemical process: Guiding technology selection and research focus

被引:26
|
作者
Sohel, M. Imroz [1 ]
Jack, Michael W. [1 ]
机构
[1] Scion, Rotorua, New Zealand
关键词
Bioenergy; Biofuel; Exergy analysis; Lignocellulosic biomass; BIOMASS GASIFICATION; ENERGY; ETHANOL; EFFICIENCY; FUELS;
D O I
10.1016/j.biortech.2010.10.032
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
The aim of this paper is to present an exergy analysis of bioethanol production process from lignocellulosic feedstock via a biochemical process to asses the overall thermodynamic efficiency and identify the main loss processes. The thermodynamic efficiency of the biochemical process was found to be 35% and the major inefficiencies of this process were identified as: the combustion of lignin for process heat and power production and the simultaneous scarification and co-fermentation process accounting for 67% and 27% of the lost exergy, respectively. These results were also compared with a previous analysis of a thermochemical process for producing biofuel. Despite fundamental differences, the biochemical and thermochemical processes considered here had similar levels of thermodynamic efficiency. Process heat and power production was the major contributor to exergy loss in both of the processes. Unlike the thermochemical process, the overall efficiency of the biochemical process largely depends on how the lignin is utilized. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2617 / 2622
页数:6
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