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State of the art on mixing in an anaerobic digester: A review

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  • Singh, Buta
  • Szamosi, Zoltán
  • Siménfalvi, Zoltán

Abstract

An absolute analysis was brought on the outcome of fusing the biogas production in an anaerobic digester by targeting the impeller geometry and mixing modes. Agitation, the most prominent factor, undeviatingly determines the consequences of an anaerobic digester operated at higher solid content. The sustainability of homogeneity of substrate for solid liquid phase and the uniformity of microbial community hinge on agitation in an anaerobic digester. In spite of having clash of views on mixing intensity and sort of mixer usage multifaceted studies have been directed rendering worthful results.

Suggested Citation

  • Singh, Buta & Szamosi, Zoltán & Siménfalvi, Zoltán, 2019. "State of the art on mixing in an anaerobic digester: A review," Renewable Energy, Elsevier, vol. 141(C), pages 922-936.
    • Handle: RePEc:eee:renene:v:141:y:2019:i:c:p:922-936
    DOI: 10.1016/j.renene.2019.04.072
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    3. Buta Singh & Narinder Singh & Zsolt Čonka & Michal Kolcun & Zoltán Siménfalvi & Zsolt Péter & Zoltán Szamosi, 2021. "Critical Analysis of Methods Adopted for Evaluation of Mixing Efficiency in an Anaerobic Digester," Sustainability, MDPI, vol. 13(12), pages 1-27, June.
    4. Yuan, Yongkang & Hou, Tingting & Li, Pengfei & Sun, Hui & Jiao, Youzhou & Li, Gang & He, Chao, 2026. "Enhancing semi-continuous anaerobic digestion efficiency with nanobubble water: thermophysical properties optimization and microbial regulation," Renewable Energy, Elsevier, vol. 258(C).
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    6. Wang, Zhongzhong & Hu, Yuansheng & Wang, Shun & Wu, Guangxue & Zhan, Xinmin, 2023. "A critical review on dry anaerobic digestion of organic waste: Characteristics, operational conditions, and improvement strategies," Renewable and Sustainable Energy Reviews, Elsevier, vol. 176(C).
    7. Pan, Xiaoli & Wang, Yuxuan & Xie, Haiyin & Wang, Hui & Liu, Lei & Du, Hongxia & Imanaka, Tadayuki & Igarashia, Yasuo & Luo, Feng, 2022. "Performance on a novel rotating bioreactor for dry anaerobic digestion: Efficiency and biological mechanism compared with wet fermentation," Energy, Elsevier, vol. 254(PB).
    8. Guo, Xingyang & Wang, Peng & Si, Qiaorui & Wang, Shiji & Qiao, Shiwei & Yuan, Jianping, 2025. "Enhancing the energetic performance of cattle manure anaerobic digestion: a combined CFD and experimental study on mixing, HRT, and feeding strategies," Energy, Elsevier, vol. 335(C).
    9. Zbigniew Skibko & Andrzej Borusiewicz & Jacek Filipkowski & Łukasz Pisarek & Maciej Kuboń, 2025. "Impact of Farm Biogas Plant Auxiliary Equipment on Electrical Power Quality," Energies, MDPI, vol. 18(14), pages 1-18, July.
    10. Hoe-Gil Lee & Brett Rice, 2025. "Design and CFD Analysis of a Compact Anaerobic Digestion Bioreactor Evaluating Agitation Designs and Configurations for Energy Efficiency," Energies, MDPI, vol. 18(19), pages 1-30, September.
    11. Liu, Zihao & Foong, Shin Ying & Zhang, Yang & Li, Yameng & Hu, Bing & Liew, Rock Keey & Lam, Su Shiung & Ai, Fuke & Liu, Zihan & Zhu, Feiyang & Wang, Wanpeng & Zhou, Xiying & Tao, Junyu & Zhang, Zhipi, 2025. "Proactive detection, prediction, and control of instabilities in anaerobic digestion systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 224(C).
    12. El Ibrahimi, Mohammed & Khay, Ismail & El Maakoul, Anas & Bakhouya, Mohamed, 2022. "Effects of the temperature range on the energy performance of mixed and unmixed digesters with submerged waste: An experimental and CFD simulation study," Renewable Energy, Elsevier, vol. 200(C), pages 1092-1104.
    13. Schneider, Nico & Gerber, Mandy, 2020. "Rheological properties of digestate from agricultural biogas plants: An overview of measurement techniques and influencing factors," Renewable and Sustainable Energy Reviews, Elsevier, vol. 121(C).
    14. Oluwafunmilayo Abiola Aworanti & Oluseye Omotoso Agbede & Samuel Enahoro Agarry & Ayobami Olu Ajani & Oyetola Ogunkunle & Opeyeolu Timothy Laseinde & S. M. Ashrafur Rahman & Islam Md Rizwanul Fattah, 2023. "Decoding Anaerobic Digestion: A Holistic Analysis of Biomass Waste Technology, Process Kinetics, and Operational Variables," Energies, MDPI, vol. 16(8), pages 1-36, April.
    15. Di Capua, Francesco & Spasiano, Danilo & Giordano, Andrea & Adani, Fabrizio & Fratino, Umberto & Pirozzi, Francesco & Esposito, Giovanni, 2020. "High-solid anaerobic digestion of sewage sludge: challenges and opportunities," Applied Energy, Elsevier, vol. 278(C).
    16. Vojtěch Zejda & Vítězslav Máša & Šárka Václavková & Pavel Skryja, 2020. "A Novel Check-List Strategy to Evaluate the Potential of Operational Improvements in Wastewater Treatment Plants," Energies, MDPI, vol. 13(19), pages 1-21, September.

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