The Impact of RDF Valorization on the Leachate Quality and on Emissions from Cement Kiln (Case Study of a Region in Morocco)

Document Type : Original Research Paper


1 Team of Applied Spectro-Chemometry and Environment. University of Sultan Moulay Slimane, BeniMellal, Morocco Team of Agro-Industrial and Environmental Processes. University of Sultan of Moulay Slimane, BeniMellal, Morocco

2 Team of Agro-Industrial and Environmental Processes. University of Sultan of Moulay Slimane, BeniMellal, Morocco

3 Team of Applied Spectro-Chemometry and Environment. University of Sultan Moulay Slimane, BeniMellal, Morocco

4 Team of Biotechnology, Analytical Sciences and Natural Resources Management,Higher School of Technology Khenifra, University of Sultan MoulaySlimane, BeniMellal, Morocco

5 Division of Sustainable Development, Hamad Bin Khalifa University, Qatar Foundation, Education City, P.O. Box 5825, Doha, Qatar


Energy recovery is a sustainable method of municipal solid waste (MSW) management. The co-incineration of refuse derived fuel (RDF) has shown several economic and environmental advantages. The objective of this research is to assess the impact of RDF recovery on leachate quality using leachate tests and calculation of greenhouse gases (GHG) reduction in the kilns of a cement plant. The qualitative results of the eluate show that there is an impact on leachate quality depending on the type of waste. The values of the chemical oxygen demand (COD), biological oxygen demand (BOD5), electrical conductivity and pH of the leachate from the raw waste after 120 hours of leaching are 29.33 gO2/kg DM, 14.00 g O2/kg DM, 4.27 ms/cm and 7.57. On the other hand, the values of the same quality parameters of the eluate generated by the waste without RDF are 19.33 g O2/kg DM, 20.67 g O2/kg DM, 2.77 ms/cm and 7.13; respectively. The calculation of GHG reduction shows that the substitution of 83,000 tonnes per year of petroleum coke by 15% of RDF (25,493 tonnes per year) can reduces 28,970 tCO2 eq.


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