The circular economy potential of urban organic waste streams in low- and middle-income countries

Daniel Ddiba (), Kim Andersson (), Arno Rosemarin (), Helfrid Schulte-Herbrüggen () and Sarah Dickin ()
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Daniel Ddiba: KTH Royal Institute of Technology
Kim Andersson: Stockholm Environment Institute
Arno Rosemarin: Stockholm Environment Institute
Helfrid Schulte-Herbrüggen: KTH Royal Institute of Technology
Sarah Dickin: Stockholm Environment Institute

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2022, vol. 24, issue 1, No 47, 1116-1144

Abstract: Abstract There is growing recognition of the potential environmental and socio-economic benefits of applying a circular approach to urban organic waste management through resource recovery. Decisions around planning and implementing circular urban waste systems require estimates of the quantity of resources available in waste streams and their potential market value. However, studies assessing circular economy potential have so-far been conducted mostly in high-income countries, yet cities in low- and middle-income countries have different challenges when developing a circular economy. This paper addresses this gap by estimating the resource recovery potential of organic waste streams in the context of low- and middle-income countries, illustrated with the case of Kampala, Uganda. A simplified material flow analysis approach is used to track the transformation of waste streams, namely faecal sludge, sewage sludge and organic solid waste into the resource recovery products biogas, solid fuel, black soldier fly larvae and compost. Findings indicate that even at current rates of waste collection, the three waste streams combined could annually yield 135,000 tonnes of solid fuel or 39.6 million Nm3 of biogas or 15,000 tonnes of black soldier fly larvae or 108,000 tonnes of compost and revenues from the products could range from 5.1 million USD from compost to 47 million USD from biogas. The results demonstrate how complex information describing urban waste can be presented to facilitate decision making and planning by stakeholders. By highlighting different resource recovery opportunities, application of this approach could provide an incentive for more sustainable urban sanitation and waste management systems.

Keywords: Resource recovery; Waste reuse; Sustainable sanitation; Waste management; Faecal sludge management (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s10668-021-01487-w

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