Browsing by Author "María Molinos-Senante"

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    Chemical functionalization of drinking water treatment residuals with calcium silicate hydrate to treat metal-enriched waters
    (2023) Alejandro Briso; Ana Turri-Rivero; Mauricio Montecinos; María Molinos-Senante; Pasten Gonzalez, Pablo Arturo; CEDEUS (Chile)
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    Evaluation of economies of scale in eco-efficiency of municipal waste management: an empirical approach for Chile
    (2021) Paula Llanquileo-Melgarejo; María Molinos-Senante
    In the circular economy context, improving the eco-efficiency of the management of municipal solid waste (MSW) occupies a prominent role. The aim of this study was to evaluate the eco-efficiency of MSW services provided by a sample of 142 Chilean municipalities using data envelopment analysis (DEA), a method that integrates both economic and environmental variables into a single performance index. This study also investigated whether the MSW facilities are affected by economies of scale. In a second stage of analysis, the effects of some exogenous variables on the eco-efficiency of MSW services were explored. The results demonstrated that 92.3% of the municipalities evaluated were not eco-efficient and presented notable room for improvement as the average eco-efficiency score was 0.58. In addition, 40.4% of the municipalities presented negative economies of scale; i.e. their operational size was not optimum and joint organization of MSW management systems should be promoted. Finally, the population served, population density, tourism and waste generated per capita were shown to have a significant impact on the eco-efficiency of MSW services. The results of this study will be beneficial for policymakers to formulate effective public policies to make the provision of MSW services more cost- and environmentally effective.
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    Evaluation of the Impact of Separative Collection and Recycling of Municipal Solid Waste on Performance: An Empirical Application for Chile
    (2021) Paula Llanquileo Melgarejo; María Molinos-Senante; Giulia Romano; Laura Carosi
    The collection of municipal solid waste (MSW) is a public service with notable effects on the environment and public health. The objective of this study was to evaluate the impact of selective collection and recycling of MSW on the performance of municipalities in providing MSW services. By employing the data envelopment analysis method, the efficiency and eco-efficiency scores for a sample of 298 municipalities in Chile were analyzed and compared. The efficiency estimation focused on the economic performance of the municipalities in the provision of MSW services, whereas the eco-efficiency assessment also integrated the environmental performance. The results indicated that the selective collection and recycling of MSW had a significant impact on the performance of the municipalities in providing these services. The percentages of efficient and eco-efficient municipalities were very low (4.70% and 4.36%, respectively), thus demonstrating the large room for performance improvement by Chilean municipalities in the management of MSW. The efficient and eco-efficient municipalities were heterogeneously distributed throughout the country, revealing the lack of collaboration between municipalities at the regional level. Finally, exogenous variables to the management of MSW carried out by the municipalities, including the population served, population density, tourism and waste generated per capita, all had an impact on the efficiency and eco-efficiency scores. The results and conclusions of this study are of great relevance for policy makers at the regional and local levels to improve the management of MSW in the context of a circular economy.