Research on Collaborative Recycling Logistics Mode of E-waste Considering Recovery Rate Improvement
With the rapid economic growth,growing demand for high-tech products and decreasing service life of products,E-waste is surging.Due to its environmental pollution and the valuable resources contained,E-waste has become a focus.However,a very small percentage of used electronic products are recycled.One of the important reasons for this problem is the lack of economic and efficient recycling logistics mode.The exist-ing E-waste recycling logistics mode ignores the collaboration between stakeholders,resulting in high cost and low recovery rate.Thus,a horizontal logistics cooperation is considered in which multiple enterprises col-laboratively solve their logistics optimisation problem through the platform.In this study,this problem is modelled as an integer programming which minimizes vehicle routing costs and fixed costs for sub-alliances,named the multi-owner collaborative recycling vehicle routing problem model with time windows.Based on the model,the optimal results of routes planning can be solved.The total cost of each sub-alliance can also be quantified.Then,Shapley value method is used to allocate the total cost of the alliance.The recovery rate quantization function model in collaborative recycling logistics mode is constructed based on customer satisfac-tion and enterprise recovery efficiency.Through numerical experiments,the benefits of collaborative recycling are demonstrated and the influencing factors of cost saving and recovery rate are further discussed.The follow-ing conclusions are drawn:the cost of multi-owner collaborative recycling can reduced by 30%-40%.Compared with individual recycling,collaborative recovery rate can increase by more than 20%,and compared with traditional recovery,the recovery rate can even increase by more than 60%.Thus,the significant cost reduction and recovery rate improvement can be verified.In addition,the consideration of time windows can obtain higher recovery rate and collaboration shows to be particularly attractive for enterprises with more dispersed demand orders because of higher cost reduction.Collaborative recycling logistics mode proposed is an important supplement to the existing recycling mode,and its path optimization and cost allocation have wide application value in practical recycling.There are important reference value and practical significance for enterprises to choose collaborative recycling mechanism and relevant cost allocation.
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