Delgado-Antequera Laura, Gémar Germán, Molinos-Senante María, Gómez Trinidad, Caballero Rafael, Sala-Garrido Ramón
Departamento de Economía Aplicada (Matemáticas), Universidad de Málaga, Campus El Ejido, 29071 Málaga, Spain.
Departamento de Economía y Administración de Empresas, Universidad de Málaga, Campus El Ejido, 29071 Málaga, Spain.
Waste Manag. 2021 Jul 1;130:136-146. doi: 10.1016/j.wasman.2021.05.022. Epub 2021 Jun 1.
Improving the eco-efficiency of municipalities in the provision of municipal solid waste (MSW) services is fundamental in the context of a circular economy. This study evaluates the eco-efficiency of a sample of Spanish municipalities, integrating the total cost as input, recyclable waste as desirable output, and unsorted waste as undesirable output. Following a pioneering approach, the weighted Russell directional distance model (a non-radial data envelopment analysis model) was employed, which allowed us to obtain a global inefficiency score and individual inefficiency scores for each variable integrated in the model. In the second stage of analysis, the potential factors affecting the previously computed inefficiency scores were investigated. The results indicated that one third of the municipalities evaluated were eco-efficient in the provision of MSW services with the total cost being the variable in which the municipalities exhibited the best performance. Moreover, the size of the municipalities, population served, population density, tourism, and availability of containers for separative collection of paper, glass, and plastic significantly affect the eco-efficiency of the municipalities. The findings of this study provide detailed information to support decision-making for the policy makers to improve the eco-efficiency of the municipalities in managing MSW.
在循环经济背景下，提高城市在提供城市固体废物（MSW）服务方面的生态效率至关重要。本研究评估了一组西班牙城市的生态效率，将总成本作为投入，可回收废物作为期望产出，未分类废物作为非期望产出。采用了一种开创性方法，即加权罗素方向距离模型（一种非径向数据包络分析模型），这使我们能够获得模型中每个变量的全局无效率得分和个体无效率得分。在分析的第二阶段，研究了影响先前计算出的无效率得分的潜在因素。结果表明，三分之一的评估城市在提供城市固体废物服务方面具有生态效率，总成本是这些城市表现最佳的变量。此外，城市规模、服务人口、人口密度、旅游业以及纸张、玻璃和塑料分类收集容器的可用性显著影响城市的生态效率。本研究结果提供了详细信息，以支持政策制定者在提高城市管理城市固体废物的生态效率方面的决策。
