School of Business and Leadership, Our Lady of the Lake University, USA.
Waste Manag Res. 2020 Mar;38(3):300-311. doi: 10.1177/0734242X19886650. Epub 2019 Nov 21.
The impacts of price and sustainability on municipal waste disposal demand have largely been ignored by waste management researchers. This paper considers a waste disposal supply chain that includes a disposal facility and a contractor. Both parties try to improve source sorting for waste collection to reduce the recycling cost at the disposal facility. Improving source sorting requires investment that would increase the price of the waste disposal service, thereby affecting the price-sensitive demand. The relationship between the service price and investments in waste sorting motives is analyzed in this paper via studying the trade-off between the optimal source sorting and the waste disposal service prices. Different scenarios based on the various players' power structures are developed. Nash and Stackelberg games have been applied in order to find the optimal decision values in each scenario. The impact of cost sharing on optimal supply chain decisions is also studied. The numerical results show that the waste supply chain is more profitable when it is working under an integrated management structure. Moreover, reducing the required investment motivates supply chain players to select higher levels of waste sorting at the source. A numerical example is provided, followed by some managerial insights.
价格和可持续性对城市废物处理需求的影响在很大程度上被废物管理研究人员所忽视。本文考虑了一个废物处理供应链，其中包括一个处理设施和一个承包商。双方都试图改善废物收集的源头分类，以降低处理设施的回收成本。提高源头分类需要投资，这将提高废物处理服务的价格，从而影响对价格敏感的需求。本文通过研究最优源头分类与废物处理服务价格之间的权衡，分析了服务价格与废物分类投资之间的关系。根据不同参与者的权力结构，制定了不同的情景。应用纳什和斯塔克伯格博弈来找到每个情景中的最优决策值。还研究了成本分担对最优供应链决策的影响。数值结果表明，当废物供应链在综合管理结构下运作时，其利润更高。此外，降低所需投资促使供应链参与者选择在源头进行更高水平的废物分类。提供了一个数值例子，并给出了一些管理上的见解。
