Integrated ahp-topsis under a fuzzy environment for the selection of waste-to-energy technologies in Ghana: a performance analysis and socio-enviro-economic feasibility study

Afrane, Sandylove, Ampah, Jeffrey Dankwa, Agyekum, Ephraim Bonah, Amoh, Prince Oppong, Yusuf, Abdulfatah Abdu, Fattah, Islam Md Rizwanul, Agbozo, Ebenezer, Elgamli, Elmazeg, Shouran, Mokhtar ORCID: https://orcid.org/0000-0002-9904-434X, Mao, Guozhu and Kamel, Salah 2022. Integrated ahp-topsis under a fuzzy environment for the selection of waste-to-energy technologies in Ghana: a performance analysis and socio-enviro-economic feasibility study. International Journal of Environmental Research and Public Health 19 (14) , 8428. 10.3390/ijerph19148428

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Abstract

Energy recovery from waste presents a promising alternative for several countries, including Ghana, which has struggled with unsustainable waste treatment methods and an inadequate power supply for several decades. The current study adopts a comprehensive multi-criteria decision-making approach for the selection of an optimal waste-to-energy (WtE) technology for implementation in Ghana. Four WtE technologies are evaluated against twelve selection criteria. An integrated AHP-fuzzy TOPSIS method is applied to estimate the criteria’s weights and rank the WtE alternatives. From the AHP results, technical criteria obtained the highest priority weight, while social criteria emerged as the least important in the selection process. The overall ranking order of WtE technologies obtained by fuzzy TOPSIS is as follows: anaerobic digestion > gasification > pyrolysis > plasma gasification. The sensitivity analysis indicates highly consistent and sturdy results regarding the optimal selection. This study recommends adopting a hybrid system of anaerobic digestion and gasification technologies, as this offers a well-balanced system under all of the evaluation criteria compared to the standalone systems. The results of the current study may help the government of Ghana and other prospective investors select a suitable WtE technology, and could serve as an index system for future WtE research in Ghana.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	MDPI
ISSN:	1660-4601
Date of First Compliant Deposit:	14 October 2022
Date of Acceptance:	8 July 2022
Last Modified:	10 Feb 2024 02:10
URI:	https://orca.cardiff.ac.uk/id/eprint/153174

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