Environmental assessment of two home composts with high and low gaseous emissions of the composting process |
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| Institution: | 1. Sostenipra Research Group, Institute of Environmental Science and Technology (ICTA), Universitat Autònoma de Barcelona, 08193 Edifici C Bellaterra, Barcelona, Spain;2. Sostenipra Research Group, Institute of Research in Agrifood Sector (IRTA), Environmental Horticulture, 08348 Cabrils, Barcelona, Spain;3. Department of Chemical Engineering XRB, Universitat Autònoma de Barcelona, 08193 Edifici Q Bellaterra, Barcelona, Spain;1. LAR Laboratory – Dipartimento di Ingegneria, Via G. Duranti 93, 06125 Perugia, Italy;2. CIMIS, Via G. Duranti 67, 06125 Perugia, Italy;1. Institute of Waste Treatment and Reclamation, Tongji University, 1239 Siping Road, Shanghai 200092, PR China;2. Centre for the Technology Research and Training on Household Waste in Small Towns & Rural Area, Ministry of Housing and Urban-Rural Development of PR China (MOHURD), 1239 Siping Road, Shanghai 200092, PR China;3. State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, PR China;1. Dept. of Physical Chemistry and Chemical Engineering I, University of A Coruña, Galiza, Spain;2. Division of Biology and Conservation Ecology, School of Science and the Environment, Manchester Metropolitan University, UK |
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| Abstract: | A Life Cycle Assessment (LCA) of two home composts with low and high gaseous emissions of the composting process is presented. The study focused on the gaseous emissions of the composting process. Gaseous emissions of methane, nitrous oxides, ammonia and volatic organic compounds of the composting process were experimentally measured in field real trials. The results showed that the differences in gaseous emissions between the two home composts were 4.5, 5.8 and 52 for methane, nitrous oxides and ammonia, respectively. Higher emissions of nitrous oxides and methane affected significantly the category of global warming potential, while higher emissions of ammonia affected mainly the categories of acidification potential, eutrophication potential and photochemical oxidation. The differences found in the compost emissions were attributable to the composting production management (quality and composition of waste stream, frequency mixing of waste, humidity and temperature monitoring, among others) as well as weather conditions (temperature and humidity). |
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| Keywords: | Life Cycle Assessment Home compost Compost emissions Municipal solid waste Mineral fertilizers Fertirrigation |
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