The use of LCA in selecting the best MSW management system |
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| Authors: | Giovanni De Feo Carmela Malvano |
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| Institution: | 1. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China;2. Beijing Engineering Research Center for Watershed Environmental Restoration & Integrated Ecological Regulation, Beijing 100875, China;3. Institute of Environmental Sciences, CML, Leiden University, Einsteinweg 2, 2333 CC Leiden, The Netherlands;4. Center for Social and Environmental Systems Research, National Institute for Environmental Studies (NIES), Onogawa 16-2, Tsukuba-City, Ibaraki 305-8506, Japan;5. Department of Sciences and Technologies, Parthenope University of Naples, Centro Direzionale—Isola C4, 80143 Naples, Italy;1. Laboratory of Environmental Engineering, Department of Civil Engineering and Computer Science Engineering, University of Rome “Tor Vergata”, Via del Politecnico 1, 00133 Rome, Italy;2. Department of Environmental Engineering, Technical University of Denmark, Building 113, DK-2008 Kgs. Lyngby, Denmark;1. Aveny GmbH, Schwandenholzstr. 212, CH-8046 Zürich, Switzerland;2. ETH Zurich, Institute of Environmental Engineering, Schafmattstrasse 6, CH-8093 Zurich, Switzerland;3. Swiss Post, Communications, Politics and Social Responsibility, Viktoriastrasse 21, P.O. Box, CH-3030 Berne, Switzerland;4. City of Zürich, ERZ Entsorgung + Recycling Zürich, Hagenholzstrasse 110, P.O. Box, CH-8050 Zürich, Switzerland;1. Department of Sciences and Technologies, Parthenope University of Naples, Italy;2. School of Environment, Beijing Normal University, China |
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| Abstract: | This paper focuses on the study of eleven environmental impact categories produced by several municipal solid waste management systems (scenarios) operating on a provincial scale in Southern Italy. In particular, the analysis takes into account 12 management scenarios with 16 management phases for each one. The only difference among ten of the scenarios (separated kerbside collection of all recyclables, glass excepted, composting of putrescibles, RDF pressed bales production and incineration, final landfilling) is the percentage of separated collection varying in the range of 35–80%, while the other two scenarios, for 80% of separate collection, consider different alternatives in the disposal of treatment residues (dry residue sorting and final landfilling or direct disposal in landfill). The potential impacts induced on the environmental components were analysed using the life cycle assessment (LCA) procedure called “WISARD” (Waste Integrated System Assessment for Recovery and Disposal). Paper recycling was the phase with the greatest influence on avoided impacts, while the collection logistics of dry residue was the phase with the greatest influence on produced impacts. For six impact categories (renewable and total energy use, water, suspended solids and oxydable matters index, eutrophication and hazardous waste production), for high percentages of separate collection a management system based on recovery and recycling but without incineration would be preferable. |
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