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Efficiency of a modified plastic tank as a bio-degradation system in Sub-Saharan African countries

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  • Chibuzo Stanley Nwankwo

    (Department of Food Science and Technology, Collage of Food Technology and Human Ecology, Federal University of Agriculture, Makurdi, Nigeria)

  • Chigozie Francis Okoyeuzu

    (Department of Food Science and Technology, Faculty of Agriculture, University of Nigeria, Nsukka, Nigeria)

  • Ikpeama Ahamefula

    (National Root Crops Research Institute, Umudike, Nigeria)

Abstract

The efficiency of three modified plastic digesters (3.6 m3 each) using food waste for biogas generation in cooking food was evaluated. The experiment was laid out based on a completely randomised design. A plastic tank was modified as a biodegradation system for food waste digestion to generate a biogas. The biochemical and chemical oxygen demand ranged from 44.58 to 49.62% and 130.42 to 139.20%, respectively, before digestion, but decreased significantly (P < 0.05) after digestion. The pH of the fermenting slurry fluctuated (6.24-6.86) and an average biogas of 0.574 m3 (505-601 L.day-1) per day was generated from the three experimental waste proportions which would be sufficient to cook three meals per day for 3 to 4 people. The methane gas significantly increased (P < 0.05) while the carbon-dioxide significantly decreased (P < 0.05) at the peak of the biogas production. The generated biogas significantly cooked (P < 0.05) faster than kerosene, but not faster than liquefied petroleum gas. The flammable biogas generation and high significant (P <0.05) percentage change in the physico-chemical properties of the wastes after digestion implied high efficiency performance of the digesters modified from the plastic tanks.

Suggested Citation

  • Chibuzo Stanley Nwankwo & Chigozie Francis Okoyeuzu & Ikpeama Ahamefula, 2020. "Efficiency of a modified plastic tank as a bio-degradation system in Sub-Saharan African countries," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 66(3), pages 89-96.
    • Handle: RePEc:caa:jnlrae:v:66:y:2020:i:3:id:21-2020-rae
    DOI: 10.17221/21/2020-RAE
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    References listed on IDEAS

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    1. Roubík, Hynek & Mazancová, Jana & Phung, Le Dinh & Banout, Jan, 2018. "Current approach to manure management for small-scale Southeast Asian farmers - Using Vietnamese biogas and non-biogas farms as an example," Renewable Energy, Elsevier, vol. 115(C), pages 362-370.
    2. M. Herout & J. Malaťák & L. Kučera & T. Dlabaja, 2011. "Biogas composition depending on the type of plant biomass used," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 57(4), pages 137-143.
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