Circular Economy and Water Sustainability: Systematic Review of Water Management Technologies and Strategies (2018–2024).

• Autores: Farfán Chilicaus, G.C., Cruz Salinas, L.E., Silva León, P.M., Lizarzaburu-Aguinaga, D.A., Vera Zelada, P., Vera Zelada, L.A., Luque Luque, E.O., Licapa-Redolfo, R., Ramos Farroñán, E.V.
• Formato: revisión
• Fecha de Publicación: 2025
• Institución: Universidad Nacional de Cajamarca
• Repositorio: UNC-Institucional
• Lenguaje: inglés
• OAI Identifier: oai:repositorio.unc.edu.pe:20.500.14074/9839
• Enlace del recurso: http://hdl.handle.net/20.500.14074/9839; https://doi.org/10.3390/su17146544
• Nivel de acceso: acceso abierto
• Materia: circular water economy; systematic review; membrane bioreactor; advanced oxidation processes; constructed wetlands; water-reuse policy; social acceptance; sustainable development goals; https://purl.org/pe-repo/ocde/ford#1.05.11

The transition toward a circular water economy addresses accelerating water scarcity and pollution. A PRISMA-2020 systematic review of 50 peer-reviewed articles (January 2018–April 2024) mapped current technologies and management strategies, seeking patterns, barriers, and critical bottlenecks. Bibliometric analysis revealed the following three dominant patterns: (i) rapid diffusion of membrane bioreactors, constructed wetlands, and advanced oxidation processes; (ii) research geographically concentrated in Asia and the European Union; (iii) industry’s marked preference for by-product valorization. Key barriers—high energy costs, fragmented regulatory frameworks, and low social acceptance—converge as critical constraints during scale-up. The following three practical action lines emerge: (1) adopt progressive tariffs and targeted tax credits that internalize environmental externalities; (2) harmonize water-reuse regulations with comparable circularity metrics; (3) create multi-actor platforms that co-design projects, boosting local legitimacy. These findings provide policymakers and water-sector practitioners with a clear roadmap for accelerating Sustainable Development Goals 6, 9, and 12 through circular, inclusive, low-carbon water systems.