Evaluating Economic and Ecological Efficiency of Italian Waste Management Systems Using Parametric and Non-parametric Methods
摘要
There is an increasing recognition in developed nations of the importance of waste reduction and recycling, in a Circular Economy perspective aiming at reducing waste impact on both public health and environment in the pursue of sustainable growth. In this context, the main objective of this work is to investigate the economic and environmental efficiency of urban waste systems in 89 major towns of each Italian province for the period 2017–2018 by using two alternative approaches for efficiency measurement. More specifically, we implement two Data Envelopment Analysis (DEA) models and the Stochastic Frontier Analysis (SFA) technique by employing the half-normal distributional form for the inefficiency term of the model. The empirical findings show that there is variability among the municipalities analyzed: units located in Northern and Central Italy show higher efficiency scores than Southern Italy units. Moreover, urban waste systems that have adopted door-to-door collection and low tariff level register the highest efficiency scores throughout the period analyzed.