Comparison of different collection systems for sorted household waste in Spain |
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| Authors: | Antonio Gallardo María D. Bovea Francisco J. Colomer Míriam Prades Mar Carlos |
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| Affiliation: | 1. Institute of Ecology and Biodiversity, School of Life Science, Shandong University, Jinan, China;2. Institute of Environmental Research, Shandong University, Jinan, China;3. Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan;1. Department of Mechanical Engineering & Construction, Universitat Jaume I, Av Sos Baynat s/n, E12071 Castellón, Spain;2. Department of Mathematics, Universitat Jaume I, Av Sos Baynat s/n, E12071 Castellón, Spain;1. CMAT-UTAD, CEMAT-IST-UL, Universidade de Trás-os-Montes e Alto Douro, UTAD, Vila Real, Portugal;2. C-MADE UBI/UTAD, Universidade de Trás-os-Montes e Alto Douro, UTAD, Vila Real, Portugal;3. CITAB/UTAD, Universidade de Trás-os-Montes e Alto Douro, UTAD, Vila Real, Portugal;1. Operations Research and Logistics, Wageningen University, Wageningen, The Netherlands;2. Top Institute Food and Nutrition, Wageningen, The Netherlands;1. Lund University Center for Sustainability Studies (LUCSUS), Lund University, Lund, Sweden;2. The Institute of Environmental Engineering at Kaunas University of Technology, Kaunas, Lithuania;3. The International Institute for Industrial Environmental Economics (IIIEE) at Lund University, Lund, Sweden |
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| Abstract: | The purpose of this study was to identify the different selective collection systems implemented in Spanish cities and to analyse the efficiency and extent to which the targets proposed by current law are met in each case.After defining the indicators to be used to quantify the efficiency of a selective collection system, a survey was designed to gather the information needed to calculate them. This survey was sent out to all Spanish cities with a population of over 50,000 inhabitants.Four different selective collection systems were also identified. For each of the four cases the indicators were calculated and analyzed to determine which one was the best system. The best values were obtained from the system with separation in five fractions: paper/cardboard, glass and lightweight packaging at drop-off points, organic waste and mixed waste in kerbside bins. Two regression models (linear and exponential) were developed in systems with enough data to explain and predict the variation in the amounts of materials that were separated correctly into containers, depending on the distance between containers and citizens. Nevertheless, the percentages of separation at source of paper/cardboard and lightweight packaging are still far from reaching the targets set by law. |
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