Biomass-derived syngas fermentation into biofuels: Opportunities and challenges

被引:367
作者
Munasinghe, Pradeep Chaminda [1 ]
Khanal, Samir Kumar [1 ]
机构
[1] Univ Hawaii Manoa, Dept Mol Biosci & Bioengn MBBE, Honolulu, HI 96822 USA
关键词
Biorefinery; Ethanol; Lignocellulosic biomass; Syngas fermentation; Mass transfer; SYNTHESIS-GAS FERMENTATIONS; MEMBRANE BIOFILM REACTOR; GENERATED PRODUCER GAS; LIQUID MASS-TRANSFER; CARBON-MONOXIDE; BUTYRIBACTERIUM-METHYLOTROPHICUM; SP-NOV; CLOSTRIDIUM-LJUNGDAHLII; EUBACTERIUM-LIMOSUM; ACETIC-ACID;
D O I
10.1016/j.biortech.2009.12.098
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
The conversion of biomass-derived synthesis gas (or syngas in brief) into biofuels by microbial catalysts (such as Clostridium ljungdahlii, Clostridium autoethanogenum, Acetobacterium woodii, Clostridium carboxidivorans and Peptostreptococcus productus) has gained considerable attention as a promising alternative for biofuel production in the recent past. The utilization of the whole biomass, including lignin, irrespective of biomass quality, the elimination of complex pre-treatment steps and costly enzymes, a higher specificity of biocatalysts, an independence of the H-2:CO ratio for bioconversion, bioreactor operation at ambient conditions, and no issue of noble metal poisoning are among the major advantages of this process. Poor mass transfer properties of the gaseous substrates (mainly CO and H-2) and low ethanol yield of biocatalysts are the biggest challenges preventing the commercialization of syngas fermentation technology. This paper critically reviews the existing literature in biomass-derived syngas fermentation into biofuels, specifically, different biocatalysts, factors affecting syngas fermentation, and mass transfer. The paper also outlines the major challenges of syngas fermentation, key performance index and technology road map, and discusses the further research needs. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:5013 / 5022
页数:10
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