Modelo de planeación y programación de la producción para el desensamble de residuos de aparatos eléctricos y electrónicos. Caso de estudio: Cantón Cuenca – Ecuador

Abstract

The model proposed maximizes the income from WEEE processing, the model was based on stochastic linear programming due to the variability of some of the parameters: the expected arrivals of WEEE in the following period, the amount of by-products obtained and the processing time of each WEEE taking into account the processing method used. Thus, the proposed model identifies the quantity of each WEEE that must be processed, choosing the method by which it must be processed and the number of resources needed. The model is multi-period due to the constant flow of new WEEE. The model is carried out with resource variables such as the input stock and by-product stocks and the expected sale of by-products in each period and the amount of demand that could not be reached. For the solution of the model, the LINGO optimization software has been used. Likewise, the model proposes a programming method based on priority rules, these rules were selected based on the level of toxicity. In each period, first the WEEE that requires disassembly is processed, then those that require a little processing, among these the product that contains the most toxic by-products is selected. The data of the model was recollected by the project Responsible and Sustainable E-waste Management in Cuenca/Ecuador (ResCue). The model was validated by simulation, through Flexsim software. All model information was entered into the Flexsim software. The results obtained do not show different values for the variables analyzed, so the proposed model is valid for planning and programming the treatment of WEEE.