A holistic framework for the evaluation of circular water economy models at watershed scale through water-energy-food-ecosystem nexus approach

Date

2024-9

Author

Yapan, Bilge İrem

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Agriculture, industry, energy production and urban sectors have a great impact on water resources. Management of these sectors independent of each other can create unsustainable strategies. The nexus approach that includes the connection between water, energy, food and the ecosystem refers to how these components are closely interconnected and how actions in one policy area have an impact on others. The Circular Economy proposed by the EU Green Deal aims to protect natural resources by decreasing the prossures on nexus components while providing sustainable economic growth. Circular Economy requires resources in use for as long as possible, extracting the maximum value from them and then recovering, renewing and reusing resources. In the literature, the positive effects of circular systems are assessed through indicators, but these indicators reflect basin characteristics in a limited and indirect way. Therefore, this study aims to develop a methodological framework to evaluate the performance of circular water economy models in the context of Water-Energy-Food-Ecosystem Nexus to ensure sustainable water management at the basin level. In this context, circular water economy alternatives were developed. The developed alternatives were evaluated using Multi-Criteria Decision Making methods including environmental and economic indicators. A methodology is proposed for the evaluation of macro-level circular water economy alternatives with Multi-Criteria Decision Making methods, considering all outputs and this framework was applied to the Porsuk Sub-basin.

Subject Keywords

Multi-criteria decision making, Circular water economy, WEFE Nexus, Porsuk sub-basin

URI

https://hdl.handle.net/11511/110994

Collections

Graduate School of Natural and Applied Sciences, Thesis