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Research Article |

Design of a Cylindrical Fixed Dome Biodigester from Hawassa University Senior Cafe food Waste for Cooking Purposes

Global warming is one of the most dangerous threats that the entire world is facing today. The emission of greenhouse gases is increasing the impact of global warming. In such a situation, reduction of greenhouse gas emissions and finding an alternative source of energy is more and more important. The production of biogas from food wastes is considered a suitable way for the reduction of greenhouse gas emissions. Biogas could provide a more sustainable energy source than wood fuels for rural households in sub-Saharan Africa. Food waste is increasingly becoming a major problem in universities imposing serious environmental impact. Conversion of the food waste using anaerobic digestion (a series of biological processes in which microorganisms break down biodegradable material in the absence of oxygen.) to biogas energy is the best option for the management of food waste and for replacement of traditional fuel used (coal) which has been employed for cooking and heating application. In addition, the slurry produced from the process provides digestate which is a source of fertilizer. This paper investigates the potential of food waste left over in the Hawassa University cafeteria to produce biogas.12.75 m3 per day of biogas from 255 kilograms of food waste per day was produced by 1200 number of students. A fixed dome cylindrical Chinese biogas having a digester volume of 20.3148 cubic meters (m³) with a retention time of 60 days and the diameter (d) and height (h) of the mixing pit are equal, which is 0.76 meters was required for the biogas production. Anaerobic Digestion is a biological process that takes place naturally when microorganisms break down organic matter in the absence of oxygen. In an enclosed chamber, controlled anaerobic digestion of organic matter produces biogas which is predominantly methane. Besides, food waste is increasingly becoming a major problem in every society imposing serious economic and environmental concerns. For this reason, many contemporary researchers are emphasizing finding sustainable solutions to recycle and produce energy from such waste. In this context, this paper aims to study and optimize the production of biogas from food waste by designing a fixed dome digester.

Biogas, Anaerobic Digestion, Fixed Dome Digester, Fertilizer, HRT, Substrate

APA Style

Demewoz, G. E., Tiruneh, A. H. (2024). Design of a Cylindrical Fixed Dome Biodigester from Hawassa University Senior Cafe food Waste for Cooking Purposes. International Journal of Energy and Environmental Science, 9(1), 1-8. https://doi.org/10.11648/ijees.20240901.11

ACS Style

Demewoz, G. E.; Tiruneh, A. H. Design of a Cylindrical Fixed Dome Biodigester from Hawassa University Senior Cafe food Waste for Cooking Purposes. Int. J. Energy Environ. Sci. 2024, 9(1), 1-8. doi: 10.11648/ijees.20240901.11

AMA Style

Demewoz GE, Tiruneh AH. Design of a Cylindrical Fixed Dome Biodigester from Hawassa University Senior Cafe food Waste for Cooking Purposes. Int J Energy Environ Sci. 2024;9(1):1-8. doi: 10.11648/ijees.20240901.11

Copyright © 2024 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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