energy efficiency, resource management, waste; energy from waste; waste management; resource management; environmental assessment; optimisation
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Haupt M., Kägi T., Hellweg S. (2018), Modular life cycle assessment of municipal solid waste management, in Waste Management
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Haupt M., Waser E., Würmli J.C., Hellweg S. (2018), Is there an environmentally optimal separate collection rate?, in Waste Management
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Rigamonti Luzia, Niero M, Haupt Melanie, Grosso M, Judl Joachim (2018), Recycling processes and quality of secondary materials: Food for thought for waste-management-oriented life cycle assessment studies., in Waste Management
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HauptMelanie (2018), Environmental Assessment of Resource and Energy Recovery in Waste Management Systems
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Haupt Melanie, Kägi Thomas, Hellweg Stefanie (2018), Life cycle inventories of waste management processes, in Data in Brief
Haupt Melanie, Vadenbo Carl, Hellweg Stefanie (2017), Do We Have the Right Performance Indicators for the Circular Economy?, in Journal of Industrial Ecology
, 21(3), 615-627.
Haupt Melanie, Vadenbo Carl, Zeltner Christoph, Hellweg Stefanie (2017), Influence of input-scrap quality on the environmental impact of secondary steel production, in Journal of Industrial Ecology
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Municipal solid waste (MSW) is widely used for energy and material recovery in Switzerland and contributes substantially to Swiss electricity and heat generation. However, large improvements are possible, as e.g. the energy efficiency of MSW incineration is rather low in comparison to other technologically advanced countries and, thus, the energy potential is underused at the moment: only 50’000 TJ of the total net calorific value of the 122’000 TJ contained in MSW incinerated annually in Switzerland are recovered as electricity and heat. In addition to energy recovery, material recovery from MSW or from incineration residues can avoid energy use for the production of primary materials and therefore lower the energy and resource demand in the producing industry. Waste is also used as fuel in industrial processes such as the production of cement, and in the chemical and pharmaceutical industry. Waste utilization in these industries leads to a lower fossil heat requirement, but potential trade-offs with adverse effects, e.g. in terms of toxic releases, need to be considered. The aim of the project is to provide strategies for an improved management of MSW with respect to energy efficiency, resource quality and efficiency, carbon footprint and overall environmental impact as well as economic costs. For this, first an energy and material flow analysis (EFA and MFA, respectively) of the present MSW management system is performed to map the current situation. This analysis is then coupled this with life cycle assessment (LCA) and cost data to identify environmental hotspots and quantify economic costs. On this basis, multi-objective optimization will be performed to identify energetically, environmentally and economically optimal solutions for Swiss waste and resource management. In addition, detailed case studies on selected waste streams of large relevance, e.g. on plastic wastes, will be carried out. The results will be translated into strategies to support the energy turnaround in a sustainable manner. These strategies assist in upcoming planning processes regarding waste management and the planning of sustainable future energy supply of Switzerland, which is an important contribution to accomplish the Energy Strategy 2050.