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A value proposition: Resource recovery from faecal sludge—Can it be the driver for improved sanitation?

Author

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  • Diener, Stefan
  • Semiyaga, Swaib
  • Niwagaba, Charles B.
  • Muspratt, Ashley Murray
  • Gning, Jean Birane
  • Mbéguéré, Mbaye
  • Ennin, Joseph Effah
  • Zurbrugg, Christian
  • Strande, Linda

Abstract

There is currently a lack of access to affordable sanitation in urban areas of Sub-Saharan Africa. This study evaluated the potential for resource recovery from innovative faecal sludge treatment processes to generate a profit that could help sustain the sanitation service chain. A total of 242 interviews were conducted in Accra, Ghana; Dakar, Senegal; and Kampala, Uganda to compare markets in different cultural and regional contexts. Products identified to have potential market value include dry sludge as a fuel for combustion, biogas from anaerobic digestion, protein derived from sludge processing as animal feed, sludge as a component in building materials, and sludge as a soil conditioner. The market demand and potential revenue varied from city to city based on factors such as sludge characteristics, existing markets, local and regional industrial sectors, subsidies, and locally available materials. Use as a soil conditioner, which has been the most common end use of treated sludge, was not as profitable as other end uses. These findings should help policy and decision makers of sanitation service provision to design financially viable management systems based on resource recovery options.

Suggested Citation

  • Diener, Stefan & Semiyaga, Swaib & Niwagaba, Charles B. & Muspratt, Ashley Murray & Gning, Jean Birane & Mbéguéré, Mbaye & Ennin, Joseph Effah & Zurbrugg, Christian & Strande, Linda, 2014. "A value proposition: Resource recovery from faecal sludge—Can it be the driver for improved sanitation?," Resources, Conservation & Recycling, Elsevier, vol. 88(C), pages 32-38.
    • Handle: RePEc:eee:recore:v:88:y:2014:i:c:p:32-38
    DOI: 10.1016/j.resconrec.2014.04.005
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    References listed on IDEAS

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    1. Arthur, Richard & Baidoo, Martina Francisca & Antwi, Edward, 2011. "Biogas as a potential renewable energy source: A Ghanaian case study," Renewable Energy, Elsevier, vol. 36(5), pages 1510-1516.
    2. Pandey, Rajesh Kumar & Rehman, A. & Sarviya, R.M., 2012. "Impact of alternative fuel properties on fuel spray behavior and atomization," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(3), pages 1762-1778.
    3. Afrane, George & Ntiamoah, Augustine, 2012. "Analysis of the life-cycle costs and environmental impacts of cooking fuels used in Ghana," Applied Energy, Elsevier, vol. 98(C), pages 301-306.
    4. John M Bryson, 2004. "What to do when Stakeholders matter," Public Management Review, Taylor & Francis Journals, vol. 6(1), pages 21-53, March.
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    Cited by:

    1. Semiyaga, Swaib & Okure, Mackay A.E. & Niwagaba, Charles B. & Katukiza, Alex Y. & Kansiime, Frank, 2015. "Decentralized options for faecal sludge management in urban slum areas of Sub-Saharan Africa: A review of technologies, practices and end-uses," Resources, Conservation & Recycling, Elsevier, vol. 104(PA), pages 109-119.
    2. Büscher, Chris, 2023. "Turning poo into profit? The troubled politics of a biogas-based sanitation business model in Mozambique," World Development, Elsevier, vol. 171(C).

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