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Microbial Fe (III) reduction and hydrogen production by a transposon-mutagenized strain of Pantoea agglomerans BH18

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  • Liu, Hongyan
  • Wang, Guangce

Abstract

Based on the transposon-mutagenized library of Pantoea agglomerans BH18, mutant screens were conducted to obtain the strain with the highest Fe (III) reduction and hydrogen production. Of these transposon-mutagenized mutants, the mutant strain TB230 was screened for high Fe (III)-reducing efficiency and hydrogen production. The PCR amplification and kanamycin resistance selection results indicated that the transposon insertion of the mutant strain TB230 was stable. Hydrogen production of the mutant strain TB230 was (2.21 ± 0.34) mol H2/mol glucose, which increased hydrogen production by over 40% compared with that of the wild type strain. The accumulation concentration of Fe (II) in the medium of the mutant strain TB230 with Fe (OH)3 as the sole electron acceptor was (7.39 ± 0.49) mmol/l, which was approximately 3-fold greater than that of the wild type strain. The mutant strain TB230 showed high Fe (III)-reducing activity and hydrogen production by adopting glucose and pyruvate as the carbon source. In addition, the mutant strain TB230 was capable of Fe (III) reduction and hydrogen production under fresh or marine conditions. This result indicates that the mutant strain with high microbial Fe (III) reduction and hydrogen production is beneficial for the improvement of anaerobic performance.

Suggested Citation

  • Liu, Hongyan & Wang, Guangce, 2015. "Microbial Fe (III) reduction and hydrogen production by a transposon-mutagenized strain of Pantoea agglomerans BH18," Energy, Elsevier, vol. 81(C), pages 691-695.
    • Handle: RePEc:eee:energy:v:81:y:2015:i:c:p:691-695
    DOI: 10.1016/j.energy.2015.01.014
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    Cited by:

    1. Zhang, Huaiwen & Yao, Yiqing & Deng, Jun & Zhang, Jian-Li & Qiu, Yaojing & Li, Guofu & Liu, Jian, 2022. "Hydrogen production via anaerobic digestion of coal modified by white-rot fungi and its application benefits analysis," Renewable and Sustainable Energy Reviews, Elsevier, vol. 157(C).
    2. Kadier, Abudukeremu & Abdeshahian, Peyman & Simayi, Yibadatihan & Ismail, Manal & Hamid, Aidil Abdul & Kalil, Mohd Sahaid, 2015. "Grey relational analysis for comparative assessment of different cathode materials in microbial electrolysis cells," Energy, Elsevier, vol. 90(P2), pages 1556-1562.

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