Isabel Gomes
Associate Professor, Department of Mathematics
Faculdade de Ciências e Tecnologia, Monte da Caparica, 2829-516 Caparica Tel: (+351)212948388 ext. 10830 (email)
Faculdade de Ciências e Tecnologia, Monte da Caparica, 2829-516 Caparica Tel: (+351)212948388 ext. 10830 (email)
This paper addresses the planning of recyclable waste collection systems while accounting for economic and environmental concerns. Service areas and vehicle routes are defined for multiple-depot logistics networks where different products have to be collected. The problem is modeled as a multi-product, multi-depot vehicle routing problem with two objective functions: distance and CO2 emissions minimization. A decomposition solution method is developed and applied to a real case-study. Six scenarios are studied regarding different service areas configuration and different objective functions. Savings up to 22% in distance and 27% in CO2 emissions are achieved, excelling economical and environmental goals.