Environmental assessment of incinerator residue utilisation |
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| Authors: | S Toller E Kärrman JP Gustafsson Y Magnusson |
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| Institution: | 1. Ecoloop AB, Mosebacke Torg 4, 116 46 Stockholm, Sweden;2. Department of Land and Water Resources Engineering, KTH (Royal Institute of Technology), SE-100 44 Stockholm, Sweden;1. NEST – Excellence Group in Thermal Power and Distributed Generation, Institute of Mechanical Engineering, Federal University of Itajubá, Av. BPS 1303, Itajubá, Minas Gerais State CEP: 37500-903, Brazil;2. CEMIG – Electric Company of Minas Gerais State, TE/AE, Av. Barbacena 1200 – 16° andar – B1 Belo Horizonte, MG CEP: 30190-131, Brazil;1. Dipartimento di Scienze Biologiche, Geologiche e Ambientali – Geology Division, University of Bologna, Piazza di Porta San Donato 1, 40126 Bologna, Italy;2. General and Analytical Chemistry – Montanuniversität Leoben, Franz-Josef-Str. 18, 8700 Leoben, Austria;1. Technical University of Denmark, Department of Environmental Engineering, Building 115, 2800 Lyngby, Denmark;2. Afatek Ltd., Selinevej 18, 2300 Copenhagen S, Denmark;1. CERIS-ICIST, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;2. School of Civil Engineering, University of Birmingham, B15 2TT, UK;3. Applying Concrete Knowledge, 1A Blackened Avenue, Birmingham, B17 8AP, UK;1. Research Institute of Tianying in Shanghai, China Tianying Inc., Shanghai, 200233, China;2. Graduate Institute of Environmental Engineering, National Taiwan University, 71 Fan-Lan Road, Da-an District, Taipei City, 10672, Taiwan;3. Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei City, 10617, Taiwan;1. INSTM and Chemistry for Technologies Laboratory, Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze, 38, 25123, Brescia, Italy;2. European Commission Joint Research Center (JRC), Via Enrico Fermi 2749, I - 21027, Ispra, VA, Italy |
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| Abstract: | Incineration ashes may be treated either as a waste to be dumped in landfill, or as a resource that is suitable for re-use. In order to choose the best management scenario, knowledge is needed on the potential environmental impact that may be expected, including not only local, but also regional and global impact. In this study, A life cycle assessment (LCA) based approach was outlined for environmental assessment of incinerator residue utilisation, in which leaching of trace elements as well as other emissions to air and water and the use of resources were regarded as constituting the potential environmental impact from the system studied. Case studies were performed for two selected ash types, bottom ash from municipal solid waste incineration (MSWI) and wood fly ash. The MSWI bottom ash was assumed to be suitable for road construction or as drainage material in landfill, whereas the wood fly ash was assumed to be suitable for road construction or as a nutrient resource to be recycled on forest land after biofuel harvesting. Different types of potential environmental impact predominated in the activities of the system and the use of natural resources and the trace element leaching were identified as being relatively important for the scenarios compared. The scenarios differed in use of resources and energy, whereas there is a potential for trace element leaching regardless of how the material is managed. Utilising MSWI bottom ash in road construction and recycling of wood ash on forest land saved more natural resources and energy than when these materials were managed according to the other scenarios investigated, including dumping in landfill. |
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