The textile industry, fueled by the “fast fashion” phenomenon, contributes significantly to environmental, social, and economic degradation through the rapid turnover of styles, leading to substantial waste as consumers frequently discard garments. This cycle of consumption and production is linked to the social demand added to purchase income, demonstrating the urgent need for sustainable interventions. The main objective of this study is to carry out a systematic review of the literature to identify and critically evaluate circular economy strategies implemented in the textile industry. This study conducted a systematic review of circular economy strategies in the textile industry using the PRISMA methodology. Our search spanned a ten-year period, examining 88 articles, from which 55 were selected as pertinent. The primary strategies identified include reuse, recycling, repair, and reduction, each of which is assessed through environmental, social, and economic lenses. Reuse is crucial for reducing impacts and waste, yet it is hampered by insufficient consumer incentives. Recycling shows promise but is hindered by technological and awareness barriers. Repair contributes to extending the lifespan of garments, thereby reducing the need for new production, although it encounters challenges in terms of service accessibility and consumer knowledge. The reduction involves the search for better and more sustainable materials, with the main barrier being the fast fashion. The findings suggest that reuse is not only economically viable but also capable of lessening social inequality. Recycling, however, necessitates substantial investments and the development of supportive policies. Repair, on the other hand, significantly lessens the environmental impact and can spur new economic opportunities and employment. Despite these hurdles, these strategies present viable pathways toward a more sustainable textile industry. However, achieving this requires a paradigm shift in both consumer behavior and corporate practices to embrace and optimize circular economy practices within the sector.

Constructed wetlands (CWs) attempt to simulate the physicochemical and biological processes that occur within a natural wetland and have been employed in recent decades for wastewater treatment. This work aims to review the use of CWs for domestic wastewater treatment in undeveloped or developing areas, including the amount of literature produced, the type of constructed wetland, the vegetation, the substrate, and the social benefits that have been achieved, through a qualitative methodology where different articles are collected from the Scopus and Web of Science databases after a strict revision by means of the PRISMA method (Preferred Reporting Items of Systematic Reviews and Meta-Analyses) and CASP (Critical Appraisal Skills Program). A total of 49 articles were selected, and co-occurrence and density maps were obtained; following this, three main themes and the five keywords with the highest correlation were identified. The literature analyzed in this work exposes different types of CWs where not only the hybrid, vertical, and horizontal flow systems stand out, but also the floating and aerated wetlands, which present high removal efficiencies. Additionally, new substrate materials, such as olote, palm shells, and coconut peat, and the ornamental plants usually used, such as Phragmites australis and Thypha latifolia, are discussed; however, new studies with vegetation that has been little studied but has a high potential to be implemented in areas with silvicultural characteristics stand out: Duranta repens, Pennisetum pedicellatum, and Pistia stratiotes. In conclusion, there is an advancement in the research of these systems, new configurations, substrates, and vegetation to treat domestic wastewater; in addition, these studies present an opportunity to continue studying the installation of CWs at the household level; however, compared to the other areas of application mentioned above, its implementation requires a greater challenge, since it requires a compact design and easy handling.

Nature-Based Solutions (NBS) represent an alternative for achieving environmental and resilience goals in diverse global contexts with varying needs. As such, NBS can be understood as processes involving actions that promote circular economy (CE) strategies within their function. Therefore, this research aims to conduct a systematic literature review to identify and analyze the main NBS applied and explore how they are associated with CE strategies. This study performs a systematic literature review of NBS and their relationship with the CE using the PRISMA methodology, analyzing a total of 32 articles retrieved from the SCOPUS database. The main NBS include constructed wetlands, green infrastructure, and soil restoration and enrichment solutions. Constructed wetlands are linked to strategies such as recycling and reuse due to their role in treating urban and domestic wastewater for reuse, thereby increasing water availability. Green infrastructure is associated with strategies like redesign and reduction, as it involves the use of lower-impact materials and designs for rainwater harvesting and thermal comfort improvement. Soil enrichment and remediation solutions are connected to reuse and recycling strategies, as most derive from organic waste composting or microorganisms. NBS and CE strategies highlight how these solutions not only provide direct environmental benefits but also, when analyzed from a sustainability perspective, can offer social and economic benefits. Furthermore, understanding their relationship will facilitate their integration into regulations for transitioning toward circularity in industries and cities. The contribution of this article lies in synthesizing and systematizing the evidence on how NBS operationalizes CE strategies, identifying the main mechanisms and gaps, and proposing a conceptual model that can guide future research and policy design.

La humanidad es cada vez más consciente de la necesidad de cuidar el planeta, es decir, de mantener los ecosistemas, recursos naturales, áreas verdes, diversidad vegetal y animal, así como todo lo relacionado con el medio ambiente y el cambio climático. Para ello, se han implementado en los últimos años una serie de estrategias que buscan, de manera directa o indirecta, avanzar hacia una cultura en el cuidado de las condiciones ambientales que permitirán garantizar la vida para las futuras generaciones, entre las que destacan la definición de los ODS, la huella de carbono, la huella hídrica, la huella ecológica, la economía circular, la responsabilidad social, empresarial o corporativa, la taxonomía sostenible, los bonos de carbono, bonos verdes, la economía solidaria, el uso de energías renovables, entre muchas otras. En particular, la economía circular busca poner límites al actual proceso de producción-consumo para que transite de modelo lineal-intensivo, en el uso de recursos naturales para producir-consumir-desechar, hacia uno alternativo que permita minimizar el uso de insumos, generación de desechos y de emisiones contaminantes a través de la aplicación de prácticas como reducir, reciclar, intercambiar, reutilizar, rediseñar, renovar, reparar, restaurar, refabricar y recuperar. Esta obra permite dar a conocer estudios de caso, en diferentes sectores económicos, sobre prácticas que abonan al cuidado del ambiente desde un enfoque de la economía circular, de la innovación tecnológica y de la sustentabilidad.

Constructed wetlands (CWs), which combine biological and physicochemical processes and adhere to circular economy principles, are increasingly recognized as nature-based wastewater treatment solutions. With an emphasis on resource valorization and pollutant removal efficiency, this review assessed the use of organic residues as substrates in CWs. In total, 44 peer-reviewed open-access case studies in English were obtained from 325 documents that were retrieved from Scopus using PRISMA-based eligibility criteria. Information about the wastewater source, substrate, CW type, and results was extracted. The results indicated that biochar (66.7%) predominated because of its high adsorption capacity and microbial support, while shell or forest residues and agricultural residues (20.5%) helped remove micropollutants and phosphorus. CWs with vertical subsurface flow were most prevalent (54%). According to studies, the removal efficiencies of biochar and agricultural or shell residues were 10–15% higher than those of inorganic substrates for phosphorus, TSS (total suspended solids), NH₄⁺ (ammonium), and BOD (biochemical oxygen demand) in wastewater. Through innovative designs and the application of circular economy strategies, including revalorize, reuse, reutilize, reintegrate, rethink and reconnect, organic substrates enhance pollutant removal and improve the overall sustainability of CWs. Overall, CWs with organic residues provide cost-effective and environmentally sustainable wastewater treatment; further research on local resources, hybrid systems, and supportive policies is recommended to promote broader implementation.

El río de San Jerónimo Amanalco, Texcoco, México, es una zona de relevancia por las prácticas de piscicultura y por ser un área de recreación. Se realizó un análisis de las condiciones fisicoquímicas que posee un cuerpo de agua para plantear como objetivo el determinar si las características fisicoquímicas del río cumplen con la normativa aplicable vigente con el fin de identificar el índice de calidad del agua (ICA), el mejor coagulante para su posible tratamiento y las causas de contaminación. Se presenta un análisis fisicoquímico del agua proveniente del río en San Jerónimo Amanalco. Como resultado se obtuvieron las siguientes variables: turbidez (11.7 NTU), pH de (5.96), conductividad (105 ųS·cm-1), temperatura (21.6 °C), sólidos totales (470 mg·L-1), dureza total (44 mg CaCO3·L-1), cloruros (8.9 mg·L-1), nitratos (44.3 mg·L-1), oxígeno disuelto inicial (6.95 mg·L-1), acidez total (163.3 mg·L-1), fosfatos (2 mg·L-1), demanda química de oxígeno (DQO) (81.56 mg·L-1) y la demanda biológica de oxígeno a los 5 días (DBO5) (23.4 mg·L-1), además, se determinó un índice de calidad del agua (ICA) de 42, con base en lo anterior, se determinó que el cuerpo de agua es de calidad “mala” y mediante la prueba de jarras se identificó que el cloruro férrico fue el mejor coagulante para la clarificación y tratamiento. Se concluye que, el agua puede ser utilizada para actividades agrícolas y de uso indirecto, más no es apta para ingerirla.