ENBIS Spring Meeting 2019 in Barcelona

13 – 14 June 2019 Abstract submission: 15 January – 20 May 2019

A population balance model for the recycling of waste electrical and electronic equipment

13 June 2019, 16:30 – 16:55

Abstract

Submitted by
Antonio Pievatolo
Authors
Antonio Pievatolo (CNR-IMATI), Ettore Lanzarone (CNR-IMATI), Marcello Colledani (Politecnico di Milano), Marco Diani (Politecnico di Milano)
Abstract
Sustainable circular economy is introducing new industrial challenges, including recycling of waste electrical and electronic equipment (WEEE). In particular, we consider mechanical comminution of parts such as printed circuits boards, which produces mixtures of highly liberated particles. However, the complexity this process requires adequate models to control and optimize its behaviour in the context of the overall recycling system, which is composed by several stations: comminution, particle classification and separation. For comminution, the so-called Population Balance Model (PBM) has been proposed, which is however limited to the mining industry. Here we examine its applicability in the WEEE recycling industry. In particular, we consider a Markov model formulation of the PBM on the state space of the dimensional distribution of particles that can be quickly estimated and put into production, so as to be able to choose the best settings of the shredding machine for the subsequent separation stage.

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