Decolorization by Caldicellulosiruptor saccharolyticus with dissolved hydrogen under extreme thermophilic conditions

Shen, Nan, Huo, Ying-Chao, Chen, Jie-Jie, Zhang, Fang, Zheng, Hang and Zeng, Raymond J. (2015) Decolorization by Caldicellulosiruptor saccharolyticus with dissolved hydrogen under extreme thermophilic conditions. Chemical Engineering Journal, 262 847-853. doi:10.1016/j.cej.2014.10.053


Author Shen, Nan
Huo, Ying-Chao
Chen, Jie-Jie
Zhang, Fang
Zheng, Hang
Zeng, Raymond J.
Title Decolorization by Caldicellulosiruptor saccharolyticus with dissolved hydrogen under extreme thermophilic conditions
Formatted title
Decolorization by Caldicellulosiruptor saccharolyticus with dissolved hydrogen under extreme thermophilic conditions
Journal name Chemical Engineering Journal   Check publisher's open access policy
ISSN 1385-8947
1873-3212
Publication date 2015-02-15
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.cej.2014.10.053
Open Access Status
Volume 262
Start page 847
End page 853
Total pages 7
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2015
Language eng
Formatted abstract
This study examined the decolorization ability of Caldicellulosiruptor saccharolyticus isolated from a thermal spring at the optimum growth temperature of 70 °C. This study demonstrated, for the first time, C. saccharolyticus could effectively degrade methyl orange (MO) to 4-aminobenzenesulfonic acid (4-ABA) and N′,N-dimethyl-p-phenylenediamine (DPD) with dissolved hydrogen (DH) as the reducing equivalent. The decolorization reaction was catalyzed by Ni–Fe hydrogenase and the reaction rate was correlated positively to the concentration of DH. At high concentrations of DH the decolorization rates were 6.65 and 7.08 mg/L/h, which decreased to 2.16 and 0.88 mg/L/h after purging with N2. Furthermore, the addition of MO decreased the yield of ethanol via glucose fermentation owing to the limited reducing equivalents. We suggest the competition for hydrogen between the reduction of azo dyes and hydrogenotrophic methanogenesis processes might exist in mixed culture fermentation.
Keyword Enzymatic decolorization
Hydrogenase
Extreme thermophilic
Caldicellulosiruptor saccharolyticus
Dissolved hydrogen
Fermentation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online ahead of print 22 Oct 2014

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Earth Sciences Publications
Official 2016 Collection
 
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