Effects of plant and substrate types on turbidity removal in constructed wetlands : experimental and w-C* model validation.

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Autor(es): dc.creatorGomes, Paula Cristine Silva-
Autor(es): dc.creatorRochinha, Isabela da Silva Pedro-
Autor(es): dc.creatorOliveira, Jaine Nayara de Araújo de-
Autor(es): dc.creatorPaiva, Marllus Henrique Ribeiro de-
Autor(es): dc.creatorCastro, Ana Leticia Pilz de-
Autor(es): dc.creatorSouza, Tamara Daiane de-
Autor(es): dc.creatorMendes, Múcio André dos Santos Alves-
Autor(es): dc.creatorSantiago, Aníbal da Fonseca-
Data de aceite: dc.date.accessioned2026-08-11T11:24:00Z-
Data de disponibilização: dc.date.available2026-08-11T11:24:00Z-
Data de envio: dc.date.issued2026-01-22-
Data de envio: dc.date.issued2024-
Fonte completa do material: dc.identifierhttps://www.repositorio.ufop.br/handle/123456789/21279-
Fonte completa do material: dc.identifierhttps://doi.org/10.3390/w17131921-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1187897-
Descrição: dc.descriptionConstructed wetlands are nature-based technologies widely used for the treatment of wastewater and contaminated surface water. This study evaluated the efficiency of free wa- ter surface (FWS) and horizontal subsurface flow (HSSF) constructed wetlands in reducing the turbidity of mine spoil rainwater using the w-C* model. Different hydraulic retention times (2, 4, and 6 days) were tested, and the influence of macrophyte type and substrate on the w parameter was investigated. Model calibration was performed based on correlation coefficients (R), coefficient of determination (R2 ), Nash–Sutcliffe efficiency (NSE), and root mean square error (RMSE). The results indicated a 99% reduction in turbidity, with average values of R = 0.87 ± 0.05 (FWS) and 0.87 ± 0.03 (HSSF), and NSE of 0.76 ± 0.04 (FWS) and 0.74 ± 0.07 (HSSF), demonstrating good agreement between observed and predicted data. The settling rate (w) ranged from 0.16 to 0.40 m·d −1 in FWS and from 0.20 to 0.70 m·d −1 in HSSF, with the lowest value recorded in the control (0.09 m·d −1 ). The best performances were observed in FWS-P with Pistia stratiotes (0.40 m·d −1 ) and HSSF with Typha domingensis (0.70 m·d −1 ), demonstrating that vegetation, combined with the use of medium-grain substrate (9.5–19.0 mm), enhances turbidity removal. The w-C* model proved to be a ro- bust tool for describing the kinetics of suspended colloidal particle removal in constructed wetlands, providing valuable insights for optimizing hydraulic parameters and design criteria for full-scale application.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsaberto-
Direitos: dc.rightsThis article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). Fonte: PDF do artigo.-
Palavras-chave: dc.subjectConstructed wetlands-
Palavras-chave: dc.subjectw-C* model-
Palavras-chave: dc.subjectTurbidity-
Palavras-chave: dc.subjectSurface runoff-
Palavras-chave: dc.subjectMine spoil rainwater-
Título: dc.titleEffects of plant and substrate types on turbidity removal in constructed wetlands : experimental and w-C* model validation.-
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