Strategic planning for managing municipal solid wastes with consideration of multiple stakeholders
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© 2018 Elsevier B.V.Municipal solid waste management (MSWM) is associated with the control of generation, storage, collection, transportation, processing and disposal of solid waste in accordance with the principles of public health, economics, engineering, conservation, aesthetics and other environmental considerations. However, the management of municipal solid waste (MSW) involves multiple stakeholders such as government agencies, suppliers, consumers, providers of treatment/recycle services and transporters. Furthermore, the product prices constantly change due to offer and demand, and the composition of the generated MSW depends on many factors including the place where they are produced, the season and the economic development. An optimal management strategy should take into account the uncertainties in the supply chain of MSW as well as the multiple participants involved. This way, an optimum and more realistic waste management system that creates synergistic opportunities to benefit the multiple stakeholders can be obtained. This paper presents a multi-objective optimization approach for the strategic planning of a municipal solid waste management system under uncertainty. The formulation considers tasks such as recycle, reuse, transportation, separation and distribution. The proposed approach also takes into account the multiple stakeholders, with the objective of maximizing the benefit of all participants. A case study from Mexico is analyzed to probe the applicability of the proposed model. Furthermore, this model considers the financial risk by analyzing the optimistic, mean and pessimistic cases. This way, the obtained results provide additional information about the system to improve accuracy in decision-making.