A biological process effective for the conversion of CO-containing industrial waste gas to acetate
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Title
- A biological process effective for the conversion of CO-containing industrial waste gas to acetate
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Author(s)
- Kim, Tae Wan; Bae, Seung Seob; Lee, Jin Woo; Lee, Sung-Mok; Lee, Jung-Hyun; Lee, Hyun Sook; Kang, Sung Gyun
- KIOST Author(s)
- Lee, Sung Mok(이성목); Lee, Jung Hyun(이정현); Lee, Hyun Sook(이현숙); Kang, Sung Gyun(강성균)
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Alternative Author(s)
- 김태완; 배승섭; 이진우; 이성목; 이정현; 이현숙; 강성균
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Publication Year
- 2016-07
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Abstract
- Acetogens have often been observed to be inhibited by CO above an inhibition threshold concentration. In this study, a two-stage culture consisting of carboxydotrophic archaea and homoacetogenic bacteria is found to be effective in converting industrial waste gas derived from a steel mill process. In the first stage, Thermococcus onnurineus could grow on the Linz-Donawitz converter gas (LDG) containing ca. 56% CO as a sole energy source, converting the CO into H-2 and CO2. Then, in the second stage, Thermoanaerobacter kivui could grow on the off-gas from the first stage culture, consuming the H-2 and CO in the off-gas completely and producing acetate as a main product. T. kivui alone could not grow on the LDG gas. This work represents the first demonstration of acetate production using steel mill waste gas by a two-stage culture of carboxydotrophic hydrogenogenic microbes and homoacetogenic bacteria. (C) 2016 Published by Elsevier Ltd.
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ISSN
- 0960-8524
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/2179
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DOI
- 10.1016/j.biortech.2016.04.038
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Bibliographic Citation
- BIORESOURCE TECHNOLOGY, v.211, pp.792 - 796, 2016
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Publisher
- ELSEVIER SCI LTD
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Subject
- THERMOCOCCUS-ONNURINEUS NA1; ACETOGENIUM-KIVUI; HOMOACETOGENESIS; FERMENTATION; BACTERIA; HYDROGEN; PATHWAY; FUEL
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Keywords
- Steel mill waste gas; Thermococcus onnurineus; Thermoanaerobacter kivui; Gas fermentation; Two-stage culture
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Type
- Article
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Language
- English
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Document Type
- Article
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