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The combined use of life cycle assessment and data envelopment analysis to analyse the environmental efficiency of multi-unit systems
(Elsevier, 2022-01-01)
The combination of life cycle assessment (LCA) and data envelopment analysis (DEA) methodologies has been employed over the past years to assess the eco-efficiency of a wide spectrum of production systems. This chapter presents a critical review on current practices of the joint application of LCA+DEA, as well as point towards the methodological challenges and opportunities for the future. Considering the growth of the method in the past decade, it is plausible to assume that an increasing number of studies will continue to appear in the literature. The development of guidance or standardisation reports would constitute a step forward in terms of providing advice on how recurrent methodological issues (e.g. uncertainty, selection of impacts categories or DEA models, etc.) should be addressed in LCA+DEA.
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Climate change mitigation potential of transitioning from open dumpsters in Peru: Evaluation of mitigation strategies in critical dumpsites
(Elsevier B.V., 2022-11-10)
Waste management is a critical policy towards the reduction of environmental impacts to air, soil and water. Many Latin American countries, however, lack a correct waste management system in many cities and rural areas, leading to the accumulation of unmanaged waste in illegal or unregulated dumpsites. The case of Peru is of interest, as it hosts 5 of the 50 largest dumpsites in the world. An erratic waste management compromises climate actions for Peru to commit with the Paris Agreement, as no correct closure systems are established for these dumpsites. Therefore, the main objective of this study is to assess the contribution of the past and present biodegradable waste produced and disposed of in the most critical open dumpsters to the overall annual greenhouse gas (GHG) emissions of Peru using the IPCC model. Thereafter, the climate change mitigation potential of possible dumpsite closure strategies based on a selection of technologies, including economic feasibility, were estimated. Results show that cumulative GHG emissions in 2018 for the 24 critical dumpsites evaluated added up to 704 kt CO2 eq. and a cumulative value of 4.4 Mt CO2 eq. in the period 2019–2028, representing over 40 % of solid waste emissions expected by 2030. Mitigation potentials for these emissions tanged from 91 to 970 kt CO2 eq. in the ten-year period depending on the mitigation strategies adopted. The costs of these strategies are also discussed and are expected to be of utility to complement Peru's waste management commitments in the frame of the Paris Agreement.
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