Regional optimization model for locating supplemental recycling depots |
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| Authors: | Hung-Yueh Lin Guan-Hwa Chen |
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| Institution: | 1. Department of Environmental Engineering and Management, Chaoyang University of Technology, 168 Ji-Fong E. Road, Wufong Township, Taichung County, 41349 Taiwan, ROC;2. Graduate Student, Institute of Environmental Engineering, National Chiao Tung University, Hsinchu, Taiwan, ROC;1. Aristotle University of Thessaloniki, Greece;2. University of Thessaly, Greece;3. National Technical University of Athens, Greece;1. Department of Electronic & Computer Engineering, Ngee Ann Polytechnic, 535 Clementi Rd, S599489, Singapore;2. Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Malaysia;3. Department of Biomedical Engineering, School of Science and Technology, SIM University, 599491, Singapore;1. Center for Social and Environmental Systems Research, National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki 305-8506, Japan;2. EX Research Institute Ltd., 17-22 Takada 2-chome, Toshima-ku, Tokyo 171-0033, Japan;3. Institute of Applied Ecology, Chinese Academy of Sciences, No. 72 Wenhua Road, Shenyang 110016, PR China;4. Department of Civil and Environmental Engineering, College of Engineering, University of Ulsan, 102 Dehakro, Ulsan 680-749, Republic of Korea;1. National Science and Technology Center for Disaster Reduction, New Taipei City 23143, Taiwan, ROC;2. Department of Geosciences, National Taiwan University, Taipei City 10617, Taiwan, ROC;3. Department of Hydraulic and Ocean Engineering, National Cheng Kung University, Tainan City 70101, Taiwan, ROC;1. Chemical Engineering Department, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán 58060, Mexico;2. Institute of Chemical and Biological Researches, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán 58060, Mexico;3. Chemical Engineering Department, Texas A&M University, College Station, TX 77843, USA;4. Adjunct Faculty at the Chemical and Materials Engineering Department, Faculty of Engineering, King Abdulaziz University, P.O. Box 80204, Jeddah 21589, Saudi Arabia;1. Operations Research and Logistics, Wageningen University, Hollandseweg 1, 6706KN Wageningen, The Netherlands;2. Department of Automated Manufacturing Engineering, École de technologie supérieure, 1100 Notre-Dame Street West, H3C 1K3 Montreal, Canada |
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| Abstract: | In Taiwan, vendors and businesses that sell products belonging to six classes of recyclable materials are required to provide recycling containers at their local retail stores. The integration of these private sector facilities with the recycling depots established by local authorities has the potential to significantly improve residential access to the recycling process. An optimization model is accordingly developed in this work to assist local authorities with the identification of regions that require additional recycling depots for better access and integration with private facilities. Spatial accessibility, population loading and integration efficiency indicators are applied to evaluate whether or not a geographic region is in need of new recycling depots. The program developed here uses a novel algorithm to obtain the optimal solution by a complete enumeration of all cells making up the study area. A case study of a region in Central Taiwan is presented to demonstrate the use of the proposed model and the three indicators. The case study identifies regions without recycling points, prioritizes them based on population density, and considers the option of establishing recycling centers that are able to collect multiple classes of recycling materials. The model is able to generate information suitable for the consideration of decision-makers charged with prioritizing the installation of new recycling facilities. |
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