en Facilities Design & or Work Space Design Facilities Design & or Work Space Design پژوهشي Research <p>This paper considers a bi-objective mathematical model for locations of landfills, transfer stations and material recovery facilities (MRFs) in order to serve the entire regions and simultaneously identify the capacities of landfills. This is a mixed-integer programming (MIP) model, whose objectives are to minimize the total cost and pollution simultaneously. To validate the model, a numerical example is solved an augmented &epsilon;-constraint method and the associated computational results are presented to show the number of solid waste facilities and location of sites for solid waste facilities.</p> Solid waste management, Landfill location, Transfer station, Material recovery facilities, Capacity allocation 233 242 http://ijiepr.iust.ac.ir/browse.php?a_code=A-10-176-10&slc_lang=en&sid=1 Emad Sane-Zerang sane_zerang@ut.ac.ir 180031947532846003997 180031947532846003997 No University of Tehran Reza Tavakkoli-Moghaddam tavakoli@ut.ac.ir 180031947532846003998 180031947532846003998 Yes University of Tehran Hossein Heydarian h_heydaryan@ut.ac.ir 180031947532846003999 180031947532846003999 No University of Tehran