Multi-product min-cost recycling network flow problem

Abstract

Recently, the growth of environmental concerns has given increasing attention to the concept of "recycle". An efficient product recycling process is required. For this reason, this research establishes a minimum cost recycling network configuration model. This general model is based on the logistic transportation model, while being applied in a reverse fashion. The recycling system network is constructed with four process layers, including a: collection site, pre-processing site, processing site, and termination site (for reuse, resell, or disposal). Each process layer (or site) has a unique and distinct function. The EU Waste Electrical and Electronic Equipment Directive (WEEE) standard is used to determine the recycling rate for the product. The proposed model attempts to minimize the total cost, which consists of transportation cost, operating cost, and final disposal cost, as well as the sale revenue of reclaimed materials. © Springer-Verlag London Limited 2009.