Modelling a recovery network for WEEE: a case study in Portugal.
Maria Isabel Gomes1, Ana Paula Barbosa-Povoa, Augusto Q Novais
1Centro de Matematica e Aplicacoes, FCT, Universidade Nova de Lisboa, Monte de Caparica, 2829-516 Caparica, Portugal. mirg@fct.unl.pt
Waste Management (New York, N.Y.)
|April 8, 2011
Summary
This study presents a MILP model for optimizing waste electric and electronic equipment (WEEE) recovery networks. The model aids in strategically locating collection centers to support company expansion and improve WEEE recycling efficiency.
Area of Science:
- Environmental Engineering
- Operations Research
- Waste Management
Background:
- The European Union's WEEE Directive (2003) mandated recycling and recovery targets for member states.
- Portuguese legislation transposed the directive in 2004, prompting producer initiatives.
- Amb3e was established by EEE producers to manage a national WEEE recovery network.
Purpose of the Study:
- To develop and apply a MILP model for designing and planning a nationwide WEEE recovery network.
- To determine optimal locations for collection and sorting centers and define tactical network planning.
- To provide insights for strategic expansion of WEEE recovery infrastructure.
Main Methods:
- A generic Mixed-Integer Linear Programming (MILP) model was formulated.
- The model was applied to the design and planning of a WEEE recovery network.
- Analyses were conducted to evaluate alternative location selections.
Main Results:
- The study identified optimal locations for collection and sorting centers.
- The model supported strategic expansion plans for opening numerous new centers.
- Results indicated the benefit of locating centers near major WEEE generation sources.
Conclusions:
- The MILP model is effective for WEEE network design and planning.
- Strategic placement of facilities near WEEE sources enhances recovery efficiency.
- The findings support informed decision-making for expanding WEEE management infrastructure.
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