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- W2071138071 endingPage "114" @default.
- W2071138071 startingPage "93" @default.
- W2071138071 abstract "Bioconversion of syngas/waste gas components to produce ethanol appears to be a promising alternative compared to the existing chemical techniques. Recently, several laboratory-scale studies have demonstrated the use of acetogens that have the ability to convert various syngas components (CO, CO2, and H2) to multicarbon compounds, such as acetate, butyrate, butanol, lactate, and ethanol, in which ethanol is often produced as a minor end-product. This bioconversion process has several advantages, such as its high specificity, the fact that it does not require a highly specific H2/CO ratio, and that biocatalysts are less susceptible to metal poisoning. Furthermore, this process occurs under mild temperature and pressure and does not require any costly pre-treatment of the feed gas or costly metal catalysts, making the process superior over the conventional chemical catalytic conversion process. The main challenge faced for commercializing this technology is the poor aqueous solubility of the gaseous substrates (mainly CO and H2). In this paper, a critical review of CO-rich gas fermentation to produce ethanol has been analyzed systematically and published results have been compared. Special emphasis has been given to understand the microbial aspects of the conversion process, by highlighting the role of different micro-organisms used, pathways, and parameters affecting the bioconversion. An analysis of the process fundamentals of various bioreactors used for the biological conversion of CO-rich gases, mainly syngas to ethanol, has been made and reported in this paper. Various challenges faced by the syngas fermentation process for commercialization and future research requirements are also discussed. © 2011 Society of Chemical Industry and John Wiley & Sons, Ltd" @default.
- W2071138071 created "2016-06-24" @default.
- W2071138071 creator A5011699775 @default.
- W2071138071 creator A5053414036 @default.
- W2071138071 creator A5074750846 @default.
- W2071138071 date "2011-01-01" @default.
- W2071138071 modified "2023-10-04" @default.
- W2071138071 title "Biological conversion of carbon monoxide: rich syngas or waste gases to bioethanol" @default.
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