Purpose – The purpose of this paper is to assess the waste characteristics and separation efficiency of source separation of household waste in low- and middle-income communities in Kumasi Metropolis, Ghana. Design/methodology/approach – A sample of 60 households participated in the household survey, education on source separation and pilot source separation exercise. The solid waste was sorted into six fractions and three recycling categories (biodegradable; paper and plastic; residue). Findings – The mean generation rate of solid waste was 0.52±0.26 kg/per capita/day for the low-income community and 0.65±0.27 kg/per capita/day for the middle-income community. The waste fractions in the communities (low, middle income) were biodegradable organics (59.15, 65.68 per cent), plastics (11.01, 10.68 per cent), papers (3.15, 4.51 per cent), glass (0.89, 2.57 per cent), metals (0.96, 4.63 per cent) and miscellaneous (24.84, 11.93 per cent), respectively. The separation efficiency for organic category was 70 per cent, inorganic and residue was over 69 per cent and the paper and plastics was over 60 per cent. Research limitations/implications – The study suggests that the success of source separation programme hinges on education and economic incentives. It was noted that the sample size could be increased to enhance the accuracy of the data for prediction purpose. Practical implications – The findings showed there is potential for recycling through source separation programme in low-and middle-income communities. Public education and economic incentives are necessary for successful source separation programme. Originality/value – The paper provides insight into source separation to contribute to better understanding of how city authorities in developing countries could take advantage of economic incentives to scale-up recycling.

Ghana is urbanising rapidly, and over half of the country’s population have lived in urban areas since 2010. Although research has proliferated to explore Ghana’s urbanisation, there is a dearth of research that holistically explores the wider sustainability implications of urbanisation, offers comparative perspectives in the context of large and smaller urban areas, and provides a perspective of local level urbanisation in the context of resource extraction (mining). This study comparatively assesses two urban areas in Ghana (Kumasi and Obuasi), by conducting a spatio-temporal analysis of land cover change through remote sensing and by analysing demographic change through a synthesis of published population data, in order to highlight the sustainability implications of urbanisation. The results show that urbanisation has been rapid, and has resulted in changes in land cover and demography in Kumasi and Obuasi. The sustainability implications of urbanisation are identified to include limited economic opportunities, socio-spatial segregation, and destruction of natural vegetation. The evidence in this study provides insights into urbanisation in Ghana, and suggests that the positive sustainability impacts of urbanisation may be eroded by how factors such as market forces and land tenure interact at the local level.

Managing contemporary and future urbanisation to create sustainable outcomes is a globally acknowledged policy goal. However, despite the increasing uptake and implementation of National Urban Policies (NUPs), little research has explored how these policies incorporate and promote sustainability as a concept in the context of urbanisation. This paper provides a critical analysis of the extent to which sustainability is promoted within urban policy in the context of Ghana. We review Ghana’s NUP and supporting Action Plan (AP) to determine whether their initiatives promote sustainability. An evaluation matrix is used to show how the initiatives in the documents align with the dimensions of urban sustainability outlined in the UN-Habitat’s City Prosperity Index (CPI); and in addition, consideration is given to how the contents align with the dimensions of the World Bank’s Urban Sustainability Framework (USF). The overarching argument that emerges from the analysis is that while Ghana’s NUP and AP provide adequate scope and an eclectic mix of initiatives that promote urban sustainability, the sustainability benefits are potentially undermined by factors which include: (i) threats to inclusivity and social sustainability due to the neo-liberal outlook of policy documents; (ii) explicit lack of a poverty reduction strategy; and (iii) lack of environmental performance targets. To this end, suggestions are provided that could potentially enhance the sustainability impacts of Ghana’s NUP and AP in the context of urbanisation.

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