Site Suitability Analysis for Landfill in an Industrial Area in Nigeria

Abstract

This study was set against the background of identifying management strategies to combat the menace associated with poor solid waste management in urban areas of Nigeria. Therefore, it becomes highly necessary to determine suitable sites for landfill. Using remote sensing and geographic information tools and technologies the study identified the scenes of present dump sites; evaluated the conditions for selecting landfill sites; and determined suitable landfills in Ajaokuta, Nigeria. Data for the study were sourced from Sentinel-2A, 2021. Integrated GIS-based analysis using multi-criteria evaluation method was employed to scrutinise the appropriateness of the existing dumpsites for siting landfills. However, with reference to Federal Environmental Protection Agency (FEPA) guidelines, results of buffering and proximity analyses indicated that none of the existing dumpsites could be converted to landfill sites. Moreover, a fuzzy overlay of all the criteria considered was employed to identify and propose the most suitable areas for solid waste disposal sites in the study area. Based on the official stipulated distance, new sites were proposed for landfills. The study emphasised the increasing mounds and improper disposal of municipal solid wastes in Nigerian urban centres which have become too agonising and repulsive to sights. Nevertheless, if the recommendations of this study are taken with utmost seriousness, any unexpected outbreak of epidemic and environmental pollution will be greatly avoided in the study area.

GIS-Based Multi-Criteria Analysis for Selecting Suitable Areas for Urban Green Spaces in Abomey-Calavi District, Southern Benin

“…The weight of each factor is determined through a binary comparison of the criteria for prioritising the factors on the basis of a prioritisation scale [41]. It has been used successfully in various fields [17,44], and more specifically in the field of green space management [21]. Indeed, it takes into account the weight of each factor on the judgements of actors or stakeholders, evaluating and minimising the inconsistencies linked to their choice [45].…”

“…One of the potential city management tools is therefore multi-criteria analysis based on GIS, appearing to be a relevant approach for identifying suitable sites for the installation of green spaces [16]. In fact, this approach is used to solve the problem of choosing suitable sites for the installation of socio-cultural and environmental infrastructures [17,18]. More specifically, in the field of sustainable green space planning and development, the combination of GIS and hierarchical multicriteria analysis has proved very effective in the selection of appropriate areas, indicating the implication of GIS in novel city planning [19][20][21], and sometimes for the ecological monitoring of green spaces [22].…”

Selection of Suitable Landfill Site for Waste Disposal in Ilorin Metropolis Using Geographical Information System

“…These wastes are materials discarded for which municipalities are usually held responsible for collection, transportation, and final disposal. The challenge is more severe in the developing world as the collection, disposal, and dumping sites for MSW remain unsolved and complex to find solutions [2,3]. The annual municipal solid waste generated is estimated to be around 2.01 billion tones and this is expected to grow to about 3.40 billion tones by 2050, which double the estimated population growth around same period [4].…”