Abstract
Due to rapid population growth and economic activity, disposal of solid and liquid waste has become a major problem in and around Serekunda (Gambia). The solid waste collected in the Kanifing Municipal Council, which is the most densely populated municipality in the Gambia, is dumped openly on the Kotu landfill site. The only technique used to dispose of this waste at the site is open burning. As for the liquid waste collected in households and industries, it is discharged in open air at several sites and in rivers. All of this constitutes a significant environmental and health hazard. They are sources of air, soil and groundwater pollution, and acute respiratory infections (AIRs). Despite this, no recycling technique for this waste, which is concerned with the environment and human well-being, has been developed by the Gambian Government so far. However, this waste can be renewed and used as energy in several areas, including agriculture and households. This study, carried out as part of the research themes of the West African Institute for Research and Development (WARDI), aims to identify technologies that can be used to recycle waste for irrigation, compost, and energy.
Highlights
The collection and disposal of solid waste is one of the main problems of the urban environment in most countries of the world (Abdel-Shafy et al, 2018; Ferronato et al, 2019), but which are difficult in Africa where most cities lack regular waste collection and disposal services (Scarlat et al, 2015)
In the Gambia, the disposal of solid and liquid waste is a major concern for both the government and the people
The objective of this study is to identify technologies that can be used to recycle solid and liquid waste for energy production in and around the Serekunda area (Gambia)
Summary
The collection and disposal of solid waste is one of the main problems of the urban environment in most countries of the world (Abdel-Shafy et al, 2018; Ferronato et al, 2019), but which are difficult in Africa where most cities lack regular waste collection and disposal services (Scarlat et al, 2015). In the Serekunda area and its surroundings, the Manjai-Kotu landfill site is the only solid waste landfill site The objective of this study is to identify technologies that can be used to recycle solid and liquid waste for energy production in and around the Serekunda area (Gambia). After a brief presentation of the renewable energy sector in The Gambia, we will discuss successively the importance of waste recycling for energy production in the Serekunda area, the recycling technology that we propose, the recycling process and possible uses
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