Article: Converting fruit waste into biogas: a waste to energy strategy for urban markets in Ibadan, South-West Nigeria Journal: International Journal of Environment and Waste Management (IJEWM) 2024 Vol.34 No.3 pp.325 - 339 Abstract: This study aimed at producing biogas, an alternative source of energy, from selected fruit wastes generated in markets in Ibadan, Nigeria. Slurries of five varieties of fruit waste viz: orange slurry (OS), pineapple slurry (PS), watermelon slurry (WMS), banana slurry (BS) and tomato slurry (TMS) were fed into 1 m3 biogas digester in batches and monitored for their biogas yield potentials. Physicochemical analyses of the fruits, feedstock slurries and spent slurries were carried using standard methods. The TMS had the highest potential of biogas generation (6.52 ± 0.03 m3) followed by PS (5.52 ± 0.03 m3), BS (4.43 ± 0.04 m3), WMS (3.79 ± 0.04 m3) and OS (3.39 ± 0.04 m3). There was a very strong positive correlation between CH4 concentration and C/N ratio (r = 0.598, p < 0.05) and VS (r = 0.48, p > 0.05) of all the slurries. Hence, sustainable management of fruit waste could be achieved through conversion to bioenergy which can benefit the waste generators in the markets. Inderscience Publishers - linking academia, business and industry through research

Title: Converting fruit waste into biogas: a waste to energy strategy for urban markets in Ibadan, South-West Nigeria

Authors: Taiwo Babatunde Hammed; Mynepalli Kameswara Chandra Sridhar; Adenike Oluwayemisi Majekodunmi

Addresses: Department of Environmental Health Sciences, Faculty of Public Health, College of Medicine, University of Ibadan, P.O. Box 20593, UI HO, Ibadan, Nigeria ' Department of Environmental Health Sciences, Faculty of Public Health, College of Medicine, University of Ibadan, P.O. Box 20593, UI HO, Ibadan, Nigeria ' Department of Environmental Health Sciences, Faculty of Public Health, College of Medicine, University of Ibadan, P.O. Box 20593, UI HO, Ibadan, Nigeria

Abstract: This study aimed at producing biogas, an alternative source of energy, from selected fruit wastes generated in markets in Ibadan, Nigeria. Slurries of five varieties of fruit waste viz: orange slurry (OS), pineapple slurry (PS), watermelon slurry (WMS), banana slurry (BS) and tomato slurry (TMS) were fed into 1 m³ biogas digester in batches and monitored for their biogas yield potentials. Physicochemical analyses of the fruits, feedstock slurries and spent slurries were carried using standard methods. The TMS had the highest potential of biogas generation (6.52 ± 0.03 m³) followed by PS (5.52 ± 0.03 m³), BS (4.43 ± 0.04 m³), WMS (3.79 ± 0.04 m³) and OS (3.39 ± 0.04 m³). There was a very strong positive correlation between CH₄ concentration and C/N ratio (r = 0.598, p < 0.05) and VS (r = 0.48, p > 0.05) of all the slurries. Hence, sustainable management of fruit waste could be achieved through conversion to bioenergy which can benefit the waste generators in the markets.

Keywords: biogas digester; energy generation; carbon nitrogen ratio; fruit waste; methane concentration; spent slurry; Nigeria.

DOI: 10.1504/IJEWM.2024.139967

International Journal of Environment and Waste Management, 2024 Vol.34 No.3, pp.325 - 339

Accepted: 12 Apr 2022
Published online: 15 Jul 2024 *

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Title: Converting fruit waste into biogas: a waste to energy strategy for urban markets in Ibadan, South-West Nigeria

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