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Journal of Material Cycles and Waste Management

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28-05-2023 | ORIGINAL ARTICLE

Physicochemical and compositional analyses of household solid wastes: opportunities for bioenergy production and sustainable waste management in Ethiopia

Authors: Bantamlak Hassen, Seyoum Leta, Ahmed Hussen, Tadesse Alemu

Published in: Journal of Material Cycles and Waste Management | Issue 4/2023

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Abstract

This study aimed to determine the quantity and quality of source separated organic household solid waste (SSOHSW) generation in Addis Ababa, Ethiopia with particular reference to its bioenergy recovery potential using bioconversion technologies. A multi-stage probability sampling approach was employed to collect data from 304 households representing different socioeconomic backgrounds from March 2 to 9, 2021. Results showed that HSW generation rate was 0.46 kg/capita/day, and the city’s annual generation of HSW was estimated at 648,094 tons, among which, 60.1% and 22.1% were organic, and recyclable wastes, respectively. Multivariate linear regression analysis indicated household income and occupation were significantly positive, whereas family size had a significant negative association with per capita HSW generation rate. Proximate analysis revealed averages of greater than 70% volatile matter content in all test samples. Ultimate analysis findings showed that carbon and oxygen were the major elements in all the test samples whereas compositional analysis of test samples indicated content of hemicellulose (12.11–70.38%) was the highest while lignin (2.33–8.67%) was the lowest. The study findings revealed that source separated household organic municipal solid waste is a suitable feedstock for bioenergy production and sustainable waste management. Using a suitable bioconversion process such as anaerobic digestion technology, 24.6 kJ of electricity is estimated to be obtained daily from the SSOHSW fractions.

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Title: Physicochemical and compositional analyses of household solid wastes: opportunities for bioenergy production and sustainable waste management in Ethiopia
Authors: Bantamlak Hassen
Seyoum Leta
Ahmed Hussen
Tadesse Alemu
Publication date: 28-05-2023
Publisher: Springer Japan
Published in: Journal of Material Cycles and Waste Management / Issue 4/2023
Print ISSN: 1438-4957
Electronic ISSN: 1611-8227
DOI: https://doi.org/10.1007/s10163-023-01700-0

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