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A novel regeneration of iron citrate solution by biooxidation of iron-oxidizing bacteria

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Journal of Industrial Microbiology & Biotechnology

Abstract

Liquid phase oxidation process using chelated iron solution is among the most promising techniques for the hydrogen sulfide removal due to its double advantage of waste minimization and resource recovery. Regeneration of chelated iron is a core reaction in this process. Regeneration of chelated iron in acidic solution is very difficult. In this paper, a novel regeneration of iron citrate in acidic solution by biooxidation of iron-oxidizing bacteria was reported firstly. By using such a process, the influence of iron-oxidizing bacteria on the regeneration rate was investigated. The results demonstrated the regeneration rate with the new technology was increased significantly. The process may contribute to the biooxidation of iron-oxidizing bacteria. Application of this novel process increased the regeneration rate under the optimum conditions, suggesting the iron citrate regeneration process may be a feasible and economical method in application.

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Acknowledgments

This work was supported by National Natural Science Funds of China (Grant No. 51408384), Western Light Talent Culture Project (Y2C5031) and China Postdoctoral Science Foundation (2013M542276).

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Authors and Affiliations

  1. Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, People’s Republic of China

    Y. J. Wang, D. P. Li, G. Q. Zhan & X. H. He

  2. Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, 610041, China

    Y. J. Wang, D. P. Li, G. Q. Zhan & X. H. He

  3. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua, 617067, People’s Republic of China

    C. Liu

Authors
  1. Y. J. Wang
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  2. D. P. Li
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  3. C. Liu
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  4. G. Q. Zhan
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  5. X. H. He
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Correspondence to Y. J. Wang.

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Wang, Y.J., Li, D.P., Liu, C. et al. A novel regeneration of iron citrate solution by biooxidation of iron-oxidizing bacteria. J Ind Microbiol Biotechnol 41, 1725–1729 (2014). https://doi.org/10.1007/s10295-014-1510-8

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  • DOI: https://doi.org/10.1007/s10295-014-1510-8

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