Along with the increase in demand for road transportation, the number of end-of-life vehicles (ELVs), including cars and motorcycles, is expected to increase continuously. In practice, the vehicle sector contributes to approximately 5% of the industrial wastes around the world. Notably, the proper treatment and recycling system, particularly in developing countries such as Vietnam, has yet to be fully developed, causing vital environmental pollution and the dissipation of resources. Thus, designing the appropriate management plan of the ELVs in such countries is of significant importance to establish a recycling-based society.
The authors have addressed so far the issues of motorcycles, which are used as major transportation means in Vietnam, particularly with a focus on gasoline motorcycles. Meanwhile, it is expected that the share of electric motorcycles will increase, resulting in the incremental disposal of different materials which are not used in gasoline motorcycles.
Therefore, this study firstly developed the inventory data by disassembling the discarded electric motorcycle and analyzing its composition. Then, the number of total motorcycles and the amount of materials contained in obsolete motorcycles generated in Vietnam were estimated by considering the transition in the motorcycle model from gasoline to electric. This estimation was performed by using the population balance model, logistic function, and Weibull distribution. Through the analysis, it is estimated that the number of discarded motorcycles in 2030 (2,358,000 units) will increase by 1.36 times compared to that in 2000 (1,733,000 units).
The strategies of disposal mitigation and resource recycling treatment for discarded motorcycles generated in Vietnam were further discussed based on several scenarios.
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