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A Review on the Research of Promoting Biogas Fermentation Efficiency by Mixing

Received: 6 August 2018     Accepted: 1 September 2018     Published: 8 October 2018
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Abstract

Mixed agitation can significantly improve the efficiency of anaerobic fermentation, which is shown by the remarkable improvement of biogas production and pollutant removal rate, so it has become an indispensable auxiliary process in modern biogas engineering. However, the internal mechanism of how agitation improves the fermentation efficiency is not clear, so it is difficult to find the best agitation form under complex conditions. However, in recent years, more research results have been obtained in this field. The effects of various agitation forms have been continuously verified on different feedstock characteristics under different fermentation and operating conditions, and the mechanism has been gradually clarified. The most important achievement is that in the 1990s it was clear that continuous agitation would impact the fermentation system, so batch agitation is the correct way to improve the fermentation efficiency. Since the 21st century, the latest research has focused on setting the operating parameters of batch agitation. Researchers have made greatly progress in all the aspects of medium, mode, power, speed and duration of agitation, and optimized the mixing scheme. Some studies have also revealed that stirring will affect the temperature field, impurity removal, toxicity accumulation and so on, and the optimal design of mixing scheme should take into account the comprehensive effects of all aspects. In this paper, the main worldwide research achievements in this field made in recent years are reviewed, and the internal mechanism that agitation can improve the anaerobic fermentation efficiency of biogas is clarified to a certain extent, and the suitable agitation forms under certain conditions are suggested.

Published in Journal of Energy, Environmental & Chemical Engineering (Volume 3, Issue 2)
DOI 10.11648/j.jeece.20180302.13
Page(s) 32-39
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2018. Published by Science Publishing Group

Keywords

Biogas, Fermentation Efficiency, Mixing, Agitation, Flow Pattern

References
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    Ruyi Huang, Zili Mei, Jiang Li, Enshen Long, Ting Guo, et al. (2018). A Review on the Research of Promoting Biogas Fermentation Efficiency by Mixing. Journal of Energy, Environmental & Chemical Engineering, 3(2), 32-39. https://doi.org/10.11648/j.jeece.20180302.13

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    Ruyi Huang; Zili Mei; Jiang Li; Enshen Long; Ting Guo, et al. A Review on the Research of Promoting Biogas Fermentation Efficiency by Mixing. J. Energy Environ. Chem. Eng. 2018, 3(2), 32-39. doi: 10.11648/j.jeece.20180302.13

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    AMA Style

    Ruyi Huang, Zili Mei, Jiang Li, Enshen Long, Ting Guo, et al. A Review on the Research of Promoting Biogas Fermentation Efficiency by Mixing. J Energy Environ Chem Eng. 2018;3(2):32-39. doi: 10.11648/j.jeece.20180302.13

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  • @article{10.11648/j.jeece.20180302.13,
      author = {Ruyi Huang and Zili Mei and Jiang Li and Enshen Long and Ting Guo and Tao Luo and Yan Long},
      title = {A Review on the Research of Promoting Biogas Fermentation Efficiency by Mixing},
      journal = {Journal of Energy, Environmental & Chemical Engineering},
      volume = {3},
      number = {2},
      pages = {32-39},
      doi = {10.11648/j.jeece.20180302.13},
      url = {https://doi.org/10.11648/j.jeece.20180302.13},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jeece.20180302.13},
      abstract = {Mixed agitation can significantly improve the efficiency of anaerobic fermentation, which is shown by the remarkable improvement of biogas production and pollutant removal rate, so it has become an indispensable auxiliary process in modern biogas engineering. However, the internal mechanism of how agitation improves the fermentation efficiency is not clear, so it is difficult to find the best agitation form under complex conditions. However, in recent years, more research results have been obtained in this field. The effects of various agitation forms have been continuously verified on different feedstock characteristics under different fermentation and operating conditions, and the mechanism has been gradually clarified. The most important achievement is that in the 1990s it was clear that continuous agitation would impact the fermentation system, so batch agitation is the correct way to improve the fermentation efficiency. Since the 21st century, the latest research has focused on setting the operating parameters of batch agitation. Researchers have made greatly progress in all the aspects of medium, mode, power, speed and duration of agitation, and optimized the mixing scheme. Some studies have also revealed that stirring will affect the temperature field, impurity removal, toxicity accumulation and so on, and the optimal design of mixing scheme should take into account the comprehensive effects of all aspects. In this paper, the main worldwide research achievements in this field made in recent years are reviewed, and the internal mechanism that agitation can improve the anaerobic fermentation efficiency of biogas is clarified to a certain extent, and the suitable agitation forms under certain conditions are suggested.},
     year = {2018}
    }
    

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  • TY  - JOUR
    T1  - A Review on the Research of Promoting Biogas Fermentation Efficiency by Mixing
    AU  - Ruyi Huang
    AU  - Zili Mei
    AU  - Jiang Li
    AU  - Enshen Long
    AU  - Ting Guo
    AU  - Tao Luo
    AU  - Yan Long
    Y1  - 2018/10/08
    PY  - 2018
    N1  - https://doi.org/10.11648/j.jeece.20180302.13
    DO  - 10.11648/j.jeece.20180302.13
    T2  - Journal of Energy, Environmental & Chemical Engineering
    JF  - Journal of Energy, Environmental & Chemical Engineering
    JO  - Journal of Energy, Environmental & Chemical Engineering
    SP  - 32
    EP  - 39
    PB  - Science Publishing Group
    SN  - 2637-434X
    UR  - https://doi.org/10.11648/j.jeece.20180302.13
    AB  - Mixed agitation can significantly improve the efficiency of anaerobic fermentation, which is shown by the remarkable improvement of biogas production and pollutant removal rate, so it has become an indispensable auxiliary process in modern biogas engineering. However, the internal mechanism of how agitation improves the fermentation efficiency is not clear, so it is difficult to find the best agitation form under complex conditions. However, in recent years, more research results have been obtained in this field. The effects of various agitation forms have been continuously verified on different feedstock characteristics under different fermentation and operating conditions, and the mechanism has been gradually clarified. The most important achievement is that in the 1990s it was clear that continuous agitation would impact the fermentation system, so batch agitation is the correct way to improve the fermentation efficiency. Since the 21st century, the latest research has focused on setting the operating parameters of batch agitation. Researchers have made greatly progress in all the aspects of medium, mode, power, speed and duration of agitation, and optimized the mixing scheme. Some studies have also revealed that stirring will affect the temperature field, impurity removal, toxicity accumulation and so on, and the optimal design of mixing scheme should take into account the comprehensive effects of all aspects. In this paper, the main worldwide research achievements in this field made in recent years are reviewed, and the internal mechanism that agitation can improve the anaerobic fermentation efficiency of biogas is clarified to a certain extent, and the suitable agitation forms under certain conditions are suggested.
    VL  - 3
    IS  - 2
    ER  - 

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Author Information
  • Biogas Institute of Ministry of Agriculture & Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Chengdu, China

  • Biogas Institute of Ministry of Agriculture & Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Chengdu, China

  • Biogas Institute of Ministry of Agriculture & Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Chengdu, China

  • College of Architecture and Environment, Sichuan University, Chengdu, China

  • Rural Energy Office of Sichuan Province, Chengdu, China

  • Biogas Institute of Ministry of Agriculture & Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Chengdu, China

  • Biogas Institute of Ministry of Agriculture & Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Chengdu, China

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