Waste collection systems. Part B: Benchmarking indicators. Benchmarking of the Great Lisbon Area, Portugal

Rodrigues, Susana; Martinho, Graça; Pires, Ana

doi:10.1016/j.jclepro.2016.07.146

Cited by 20 publications

(7 citation statements)

References 29 publications

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“…Considering the volumetry of the bags, the specific weight of packaging in RVM bags is 21.6 kg/m 3 . This value is within the range indicated by Rodrigues et al [ 47 ] and in the case of packaging waste deposited in plastic/metal containers. However, given that only the PET plastic material is accepted by the RMV, it would be expected that the rate of compaction of the machines would result in a higher specific weight.…”

Section: Resultssupporting

confidence: 87%

Indicators and characteristics of PET packaging collected in a Deposit and Refund System pilot project

Martinho,

Santos,

Alves

et al. 2024

Heliyon

Self Cite

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Section: Resultssupporting

confidence: 87%

Indicators and characteristics of PET packaging collected in a Deposit and Refund System pilot project

Martinho,

Santos,

Alves

et al. 2024

Heliyon

Self Cite

View full text Add to dashboard Cite

“…Nevertheless, policies at the time were more focused on collection than on treatment and destination. Some laws were imposed and part of them were transposed from the internal legal order of the EU Directives [6]. Strategies to encourage lower waste generation meant that the waste producer should properly collect, store, transport, dispose of, and use waste without endangering human health or causing harm to the environment.…”

Section: The Urban Solid Waste Sector In Portugalmentioning

confidence: 99%

“…Eurostat, for instance, adds that MSW includes not only waste collected "by or on behalf of municipal authorities" but also the waste collected "by the private sector (business or private non-profit institutions) not on behalf of municipalities" [5]. The definition of MSW can be ambiguous and may vary from country to country [6], mirroring various waste management practices [7][8][9]. Present times are characterized by a consumerist society [10].…”

Section: Introductionmentioning

confidence: 99%

Economic Inefficiency Levels of Urban Solid Waste Management Services in Portugal

Marques

Pedro

et al. 2020

Sustainability

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Key performance indicators (KPI) are widely used tools to evaluate the economic (in)efficiency of services, including the ones devoted to urban solid waste management. Regulatory exercises are, then, mostly based on the outputs from KPIs, raising some questions about their validity. In theory, other more appropriate tools could be used to estimate those efficiency levels. This study evaluates the economic inefficiency level of urban solid waste management services in Portugal (2010–2017) through the adoption of partial frontier benchmarking models (order-m) coupled with weight restrictions. That way, the constructed model can evaluate the performance of those services under some regulatory and sustainability requirements. Then, estimated efficiency levels and some common KPIs are compared in order to understand if the latter are sufficient to explain the economic efficiency. The novelty of this research lies in two main aspects: (a) the utilization of a robust order-α model coupled with weight restrictions linked to regulatory and sustainability impositions to estimate efficiency, and (b) the comparison of economic efficiency and some commonly used KPIs, including waste fractions and recycling rate. Results point towards efficiency distributions that follow Weibull functions, with the average close to 50%; thus, nearly half of the resources have been well spent in municipal solid waste management services since 2010 onwards. Nonetheless, in an efficient system, that average would be close to 100%. Additionally, the considered management related KPIs do not exhibit any relationship with economic efficiency, which means that their interpretation and usefulness for regulatory issues are both limited and should be used carefully. In other words, those KPIs are not good performance drivers and carry no capacity to explain economic (in)efficiency in urban solid waste management services.

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“…They took into account the container design, the container capacity, and operation. In a second part of the work [10], they developed 12 indicators to characterize the technological aspect of 22 waste collection systems divided into three groups: container design, container capacity, and operation.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Municipal Solid Waste Collection System on the Time Spent at a Collection Point: A Case Study

et al. 2019

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Waste management plans pay attention to municipal solid waste (MSW) collection systems. It represents a significant portion of waste management as it involves a great economic cost and environmental impact. For these reasons, many researchers have studied the optimization of collection routes, analyzing factors that make them more efficient and sustainable, for example, the overall distance traveled and the time spent on the route. Collection times depend on factors such as the speed of the truck, time at traffic lights or time spent on loading and unloading the waste. The loading and unloading times play an important role in the measurement of the total time of the route. Moreover, there is scarce information in the literature about measuring the real-time spent on the trip. All those times are necessary to optimize the total route time. However, it is difficult to obtain this information directly as it depends on parameters such as the type of truck. The aim of this work is to propose a methodology to define all the times involved in the waste collection process. Once they are well defined, they have to be measured in some cases or calculated in others. This works also presents a case study to validate the proposed methodology with an extensive fieldwork to measure those times that can’t be calculated in the waste collection process. The work presents the results of a study of the time spent at a collection point in six MSW collection systems using different types of collection trucks and bin designs. We have determined how the characteristics of the system affect the time spent at a collection point. Additionally, the times for the six models have been established. Finally, we have determined the influence of the collection model in the duration of the activity. Under certain conditions, times can coincide even though the models are different.

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Waste collection systems. Part B: Benchmarking indicators. Benchmarking of the Great Lisbon Area, Portugal

Cited by 20 publications

References 29 publications

Indicators and characteristics of PET packaging collected in a Deposit and Refund System pilot project

Indicators and characteristics of PET packaging collected in a Deposit and Refund System pilot project

Economic Inefficiency Levels of Urban Solid Waste Management Services in Portugal

Influence of the Municipal Solid Waste Collection System on the Time Spent at a Collection Point: A Case Study

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