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Effect of Cow Dung to Maize Silage Mix Ratios and Temperature Variation on Biogas Production in Laboratory Batch Digester

Received: 28 March 2022     Accepted: 20 April 2022     Published: 10 May 2022
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Abstract

Optimization of biogas production from a given substrate and digester is an issue that needs to be addressed during the development of anaerobic digestion. To maximize the biogas production rate, the operating parameters that influence anaerobic digestion must be controlled and monitored. This research was carried out using a 0.15 m3 laboratory digester. The study evaluated the effect of cow dung and maize silage mix ratios (1:1, 1:3, and 3:1) on biogas production which were compared to their pure substrates at a constant temperature of 20°C. The temperatures (20°C, 25°C, and 30°C) were then evaluated using the optimal mix ratio of 3:1 as feedstock. The Temperature of the digester was controlled and monitored using Programmable Temperature Controller (Multispan UTC 421) and the (PLC) running on SIEMENS LOGO. The mix ratios and temperatures showed a significant effect on biogas production (P≤0.05) with mix ratios of 3:1 and 1:1 improving biogas production by 31.24% and 15.52% respectively compared to cow dung. The temperatures of 25°C and 30°C increased biogas by 26.99% and 47.35% and methane increased by 3.92% and 11.76% respectively compared to the mesophilic temperature of 20°C. The study thus, recommends a mix ratio of 3:1 and the optimal temperature of 30°C for a 0.15 m3 laboratory temperature-controlled fixed-dome anaerobic digester of cow dung and maize silage as a substrate when fed as a batch reactor.

Published in Journal of Energy, Environmental & Chemical Engineering (Volume 7, Issue 2)
DOI 10.11648/j.jeece.20220702.13
Page(s) 36-47
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), 2022. Published by Science Publishing Group

Keywords

Anaerobic Digestion, Biogas Production, Optimization, Mix Ratios, Maize Silage, Cow Dung, Temperature

References
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Cite This Article
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    Monyluak Makaj Yai Chol, Nicasio Maguu Muchuka, Daudi Nyaanga. (2022). Effect of Cow Dung to Maize Silage Mix Ratios and Temperature Variation on Biogas Production in Laboratory Batch Digester. Journal of Energy, Environmental & Chemical Engineering, 7(2), 36-47. https://doi.org/10.11648/j.jeece.20220702.13

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    ACS Style

    Monyluak Makaj Yai Chol; Nicasio Maguu Muchuka; Daudi Nyaanga. Effect of Cow Dung to Maize Silage Mix Ratios and Temperature Variation on Biogas Production in Laboratory Batch Digester. J. Energy Environ. Chem. Eng. 2022, 7(2), 36-47. doi: 10.11648/j.jeece.20220702.13

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    AMA Style

    Monyluak Makaj Yai Chol, Nicasio Maguu Muchuka, Daudi Nyaanga. Effect of Cow Dung to Maize Silage Mix Ratios and Temperature Variation on Biogas Production in Laboratory Batch Digester. J Energy Environ Chem Eng. 2022;7(2):36-47. doi: 10.11648/j.jeece.20220702.13

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  • @article{10.11648/j.jeece.20220702.13,
      author = {Monyluak Makaj Yai Chol and Nicasio Maguu Muchuka and Daudi Nyaanga},
      title = {Effect of Cow Dung to Maize Silage Mix Ratios and Temperature Variation on Biogas Production in Laboratory Batch Digester},
      journal = {Journal of Energy, Environmental & Chemical Engineering},
      volume = {7},
      number = {2},
      pages = {36-47},
      doi = {10.11648/j.jeece.20220702.13},
      url = {https://doi.org/10.11648/j.jeece.20220702.13},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jeece.20220702.13},
      abstract = {Optimization of biogas production from a given substrate and digester is an issue that needs to be addressed during the development of anaerobic digestion. To maximize the biogas production rate, the operating parameters that influence anaerobic digestion must be controlled and monitored. This research was carried out using a 0.15 m3 laboratory digester. The study evaluated the effect of cow dung and maize silage mix ratios (1:1, 1:3, and 3:1) on biogas production which were compared to their pure substrates at a constant temperature of 20°C. The temperatures (20°C, 25°C, and 30°C) were then evaluated using the optimal mix ratio of 3:1 as feedstock. The Temperature of the digester was controlled and monitored using Programmable Temperature Controller (Multispan UTC 421) and the (PLC) running on SIEMENS LOGO. The mix ratios and temperatures showed a significant effect on biogas production (P≤0.05) with mix ratios of 3:1 and 1:1 improving biogas production by 31.24% and 15.52% respectively compared to cow dung. The temperatures of 25°C and 30°C increased biogas by 26.99% and 47.35% and methane increased by 3.92% and 11.76% respectively compared to the mesophilic temperature of 20°C. The study thus, recommends a mix ratio of 3:1 and the optimal temperature of 30°C for a 0.15 m3 laboratory temperature-controlled fixed-dome anaerobic digester of cow dung and maize silage as a substrate when fed as a batch reactor.},
     year = {2022}
    }
    

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  • TY  - JOUR
    T1  - Effect of Cow Dung to Maize Silage Mix Ratios and Temperature Variation on Biogas Production in Laboratory Batch Digester
    AU  - Monyluak Makaj Yai Chol
    AU  - Nicasio Maguu Muchuka
    AU  - Daudi Nyaanga
    Y1  - 2022/05/10
    PY  - 2022
    N1  - https://doi.org/10.11648/j.jeece.20220702.13
    DO  - 10.11648/j.jeece.20220702.13
    T2  - Journal of Energy, Environmental & Chemical Engineering
    JF  - Journal of Energy, Environmental & Chemical Engineering
    JO  - Journal of Energy, Environmental & Chemical Engineering
    SP  - 36
    EP  - 47
    PB  - Science Publishing Group
    SN  - 2637-434X
    UR  - https://doi.org/10.11648/j.jeece.20220702.13
    AB  - Optimization of biogas production from a given substrate and digester is an issue that needs to be addressed during the development of anaerobic digestion. To maximize the biogas production rate, the operating parameters that influence anaerobic digestion must be controlled and monitored. This research was carried out using a 0.15 m3 laboratory digester. The study evaluated the effect of cow dung and maize silage mix ratios (1:1, 1:3, and 3:1) on biogas production which were compared to their pure substrates at a constant temperature of 20°C. The temperatures (20°C, 25°C, and 30°C) were then evaluated using the optimal mix ratio of 3:1 as feedstock. The Temperature of the digester was controlled and monitored using Programmable Temperature Controller (Multispan UTC 421) and the (PLC) running on SIEMENS LOGO. The mix ratios and temperatures showed a significant effect on biogas production (P≤0.05) with mix ratios of 3:1 and 1:1 improving biogas production by 31.24% and 15.52% respectively compared to cow dung. The temperatures of 25°C and 30°C increased biogas by 26.99% and 47.35% and methane increased by 3.92% and 11.76% respectively compared to the mesophilic temperature of 20°C. The study thus, recommends a mix ratio of 3:1 and the optimal temperature of 30°C for a 0.15 m3 laboratory temperature-controlled fixed-dome anaerobic digester of cow dung and maize silage as a substrate when fed as a batch reactor.
    VL  - 7
    IS  - 2
    ER  - 

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Author Information
  • Department of Agriculture, University of Juba, Juba, South Sudan

  • Department of Electrical and Control Engineering, Egerton University, Nakuru, Kenya

  • Department of Agricultural Engineering, Egerton University, Nakuru, Kenya

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