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Dynamic behavior in response to pH shift during anaerobic acidogenesis with a chemostat culture

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Biotechnology Techniques

Abstract

To clarify the dynamic behavior of the anaerobic acid reactor in response to pH changes, a continuous cultivation was performed. By stepwise shifting the culture pH in the acid reactor from 6.0 to 8.0, the main products were changed from butyric acid to acetic and propionic acids. This phenomenon was reproducible, reversible and was not affected by the dilution rate. It was considered that the dominant microbial populations changed in the acid reactor due to the pH shift.

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Authors and Affiliations

  1. Department of Chemical System Engineering, Kitami Institute of Technology, Koen-cho 165, Kitami-shi, Hokkaido, 090-8507, Japan

    J. Horiuchi, T. Kanno & M. Kobayashi

  2. Environmental Protection System Engineering, Graduate School of Engineering, Hokkaido University, Kita13 Nishi8, Kita-ku, Sapporo-shi, Hokkaido, 060-8628, Japan

    T. Shimizu

Authors
  1. J. Horiuchi
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  2. T. Shimizu
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  3. T. Kanno
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  4. M. Kobayashi
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Horiuchi, J., Shimizu, T., Kanno, T. et al. Dynamic behavior in response to pH shift during anaerobic acidogenesis with a chemostat culture. Biotechnology Techniques 13, 155–157 (1999). https://doi.org/10.1023/A:1008947712198

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  • DOI: https://doi.org/10.1023/A:1008947712198

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