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In this study, the collection, transport, and treatment phases (including the management of products and processing residues) of six fractions of municipal solid waste (MSW) generated in the Sinistra Piave Basin (Veneto, Italy), a consortium of 44 municipalities, were analyzed by life-cycle assessment (LCA). Specifically, two different scenarios were assessed for paper and cardboard, glass, multi-material (plastics and metals), food waste, garden waste, and dry residual fraction management, one referring to the year 2015 and the other to 2004. The primary aim was to investigate what consequences the increase in separate collection rates progressively achieved by the consortium (65% in 2004 versus to 80% in 2015) exerted on the management system and its potential environmental impacts. For each scenario, the type of separate collection method employed (door-to-door in 2015, and mixed door-to-door and curbside collection in 2004), the collected amounts, the geographic location of the main sorting/treatment plants, and the type of treatments applied to manage the products and processing residues were considered. The results of the study indicate that, among the variations that occurred in the management system for the two considered years, the increase in separate collection rate achieved was the factor that most affected all of the potential environmental impacts taken into account. In particular, for the 2015 scenario, differently from the 2004 one, all of the categories considered (apart from ecotoxicity) were negative, indicating savings instead of impacts. Treatment was the stage that by far mostly affected potential environmental savings, with regard to paper and cardboard recycling in particular.
Giulia Costa; Alessio Lieto; Francesco Lombardi. LCA of a Consortium-Based MSW Management System to Quantify the Decrease in Environmental Impacts Achieved for Increasing Separate Collection Rates and Other Modifications. Sustainability 2019, 11, 2810 .
AMA StyleGiulia Costa, Alessio Lieto, Francesco Lombardi. LCA of a Consortium-Based MSW Management System to Quantify the Decrease in Environmental Impacts Achieved for Increasing Separate Collection Rates and Other Modifications. Sustainability. 2019; 11 (10):2810.
Chicago/Turabian StyleGiulia Costa; Alessio Lieto; Francesco Lombardi. 2019. "LCA of a Consortium-Based MSW Management System to Quantify the Decrease in Environmental Impacts Achieved for Increasing Separate Collection Rates and Other Modifications." Sustainability 11, no. 10: 2810.
This work evaluated and compared potential impacts related to the accumulation and/or release of heavy metals resulting from the application of different types of stabilized waste to soil. Namely, the following three types of flows were considered: waste produced by aerobic bio-stabilization of municipal solid waste at a Mechanical Biological Treatment (MBT) plant, and compost produced either from aerobic composting or from a combination of anaerobic and aerobic biodegradation processes. After a preliminary characterization of the materials (organic matter content, volatile solid, and heavy metals content), heavy metal accumulation in soil caused by possible long-term application of these organic materials was evaluated by implementing a discretized mass balance based on the total content of the heavy metals in each type of solid matrix investigated. In addition, results of percolation leaching tests performed on each type of material were presented and discussed. Results highlight that although the total content of heavy metals of the three types of materials differed considerably, with the MBT waste presenting the highest concentrations, the results of the leaching percolation tests were quite similar.
Francesco Lombardi; Giulia Costa; Maria Chiara Di Lonardo; Alessio Lieto. Evaluation of the effects of bio stabilised waste on soil in terms of heavy metal accumulation and leaching. Ambiente e Agua - An Interdisciplinary Journal of Applied Science 2018, 13, 1 -9.
AMA StyleFrancesco Lombardi, Giulia Costa, Maria Chiara Di Lonardo, Alessio Lieto. Evaluation of the effects of bio stabilised waste on soil in terms of heavy metal accumulation and leaching. Ambiente e Agua - An Interdisciplinary Journal of Applied Science. 2018; 13 (3):1-9.
Chicago/Turabian StyleFrancesco Lombardi; Giulia Costa; Maria Chiara Di Lonardo; Alessio Lieto. 2018. "Evaluation of the effects of bio stabilised waste on soil in terms of heavy metal accumulation and leaching." Ambiente e Agua - An Interdisciplinary Journal of Applied Science 13, no. 3: 1-9.