Abstract
This paper examines four strategies of municipal solid waste management (MSWM) for Algiers city using life cycle assessment methodology. Analyzed options include the current WM landfilling system (SC1), landfilling with biogas recovery (SC2), anaerobic digestion (SC3), and anaerobic digestion with energy recovery (SC4). Real facilities in the city provided data for the inventory and background process data were taken from Ecoinvent V3.1 of SimaPro 8.1. Scenarios were compared using ReCiPe evaluation method. Results indicate that baseline scenario produces the greatest impact due diesel emissions for transportation and biogas emitted. Meanwhile, steel used for industrial installations and engines emissions contribute negatively in anaerobic digestion scenarios. Furthermore, AD scenarios shows significant improvement in all impact categories except eutrophication, toxicity and human health, which is due to high NOx and CO emissions from the biogas engine. The SC4 scenario achieved the least environmental impact where it eliminates 403.06 kg CO2 eq/t waste, saves fossil fuels with a net avoidance of 18.2 PJ/t waste, and electricity generation of 280 GWhel/year, covering 6% of the city electricity needs. The sensitivity analysis revealed that the variation of parameters do not alter the ranking order of scenarios affirming the reliability of results.
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Zibouche, S., Amouri, M. & Bouarab, R. Life cycle assessment of different municipal solid waste management options: a case study of Algiers (Algeria). J Mater Cycles Waste Manag 25, 954–969 (2023). https://doi.org/10.1007/s10163-022-01576-6
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DOI: https://doi.org/10.1007/s10163-022-01576-6