On a medium term product recovery and disposal strategy for durable assembly products

Abstract

The introduction of extended producer responsibility makes original equipment manufacturers formally responsible for take-back, recovery and reuse of discarded products. One of their key problems is to determine to what extent return products must be disassembled and which recovery and disposal options should be applied. On a tactical management level, this involves anticipating problems like meeting (legislative) recovery targets, limited secondary end markets and investments in recycling infrastructure. In this paper, a comprehensive model is presented, which determines an optimal product recovery and disposal strategy for one product type. The objective function takes into account technical, commercial and ecological criteria as well as uncertainty on these criteria due to lack of information, in particular regarding the quality level. Optimization is done on overall net pro® t and occurs using a two-phased DPalgorithm. The applicability of the model is shown in a case study.

Quantitative Models for Reverse Logistics

“…A column generation algorithm is designed to cope with large problem sizes. Krikke et al (1998) develop a stochastic approach, taking into account uncertainty in the condition of a product and its components, which may affect the feasibility of recovery options. Zeid et al (1999) discuss an artificial intelligence approach to implementing disassembly optimisation.…”

O papel das cooperativas de reciclagem nos canais reversos pós-consumo

“…Os produtos usados, provenientes de várias fontes, são trazidos para essas instalações, com a finalidade de valorização (KRIKKE, VAN HARTEN, SCHUUR, 1998). A inspeção ou a triagem ilustram a necessidade da habilidade na manipulação dos materiais.…”

“…Por exemplo, no caso das peças automotivas usadas recebidas da Seguradora Porto Seguro, que são destinadas diretamente à empresa Gerdau. A parceria seguradora, cooperativa e siderúrgica tem o objetivo de evitar que peças usadas danificadas retornem ao mercado para remanufatura, diferentemente dos estudos de diversos autores sobre os canais reversos para o reúso e remanufatura (KRIKKE, VAN HARTEN, SCHUUR, 1998;FERRER e WHYBARK, 2000;TIBBEN-LEMBKE, 2002;Srivastava, 2007;LEITE, 2009;REVLOG, 2009 A inclusão social dos catadores na gestão pública de resíduos sólidos urbanos Paiva (2004) e Pablos e Burnes (2007) destacam a importância da integração dos catadores e das cooperativas na gestão pública dos resíduos sólidos urbanos. O poder público, por meio do fomento e do apoio a cooperativas, surge como um novo ator social nesse processo, promovendo a profissionalização dos catadores e o desenvolvimento dessas associações.…”

Modelling and optimisation of a product recovery network

“…(Alshamrani et al 2007) develop a heuristic procedure for route design and pickup strategy for a network inspired by blood distribution by the American Red Cross. (Krikke et al 1998) address the remanufacture of photocopiers and as remanufacturing is a labour intensive process they compare two remanufacturing options for the company; one coinciding with the existing manufacturing network and the other in another country where labour is cheap. (Barros et al 1998) report a case study discussing the design of a logistics network for recycling sand coming from construction sites as waste.…”