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Depth of manual dismantling analysis: A cost–benefit approach
Authors:Ch Achillas  D Aidonis  Ch Vlachokostas  A Karagiannidis  N Moussiopoulos  V Loulos
Institution:1. School of Economics & Business Administration, International Hellenic University, 14th km Thessaloniki-Moudania, 57001 Thermi, Greece;2. Department of Logistics, Alexander Technological Educational Institute, Branch of Katerini, 60100 Katerini, Greece;3. Laboratory of Heat Transfer and Environmental Engineering, Department of Mechanical Engineering, Aristotle University, Thessaloniki, Box 483, 54124 Thessaloniki, Greece
Abstract:This paper presents a decision support tool for manufacturers and recyclers towards end-of-life strategies for waste electrical and electronic equipment. A mathematical formulation based on the cost benefit analysis concept is herein analytically described in order to determine the parts and/or components of an obsolete product that should be either non-destructively recovered for reuse or be recycled. The framework optimally determines the depth of disassembly for a given product, taking into account economic considerations. On this basis, it embeds all relevant cost elements to be included in the decision-making process, such as recovered materials and (depreciated) parts/components, labor costs, energy consumption, equipment depreciation, quality control and warehousing. This tool can be part of the strategic decision-making process in order to maximize profitability or minimize end-of-life management costs. A case study to demonstrate the models’ applicability is presented for a typical electronic product in terms of structure and material composition. Taking into account the market values of the pilot product’s components, the manual disassembly is proven profitable with the marginal revenues from recovered reusable materials to be estimated at 2.93–23.06 €, depending on the level of disassembly.
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