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Title: Evaluation of the removal and effects of Cylindrospermopsin on ripened slow sand filters
Authors: Valencia-Cárdenas, Daniel
Tavares, Thatiane Souza
Silveira, Rafaella
Brandão, Cristina Celia Silveira
Soares, Raquel Moraes
Ginoris, Yovanka Pérez
metadata.dc.identifier.orcid: https://orcid.org/0000-0001-7649-7277
https://orcid.org/0000-0002-9410-4921
https://orcid.org/0000-0003-4137-9814
metadata.dc.contributor.affiliation: University of Brasilia, Faculty of Technology, Department of Civil and Environmental Engineering
University of Brasilia, Faculty of Technology, Department of Civil and Environmental Engineering
University of Brasilia, Faculty of Technology, Department of Civil and Environmental Engineering
University of Brasilia, Faculty of Technology, Department of Civil and Environmental Engineering
University of Brasilia, Faculty of Technology, Department of Civil and Environmental Engineering
University of Brasilia, Faculty of Technology, Department of Civil and Environmental Engineering
Assunto:: Cianotoxicinas
Filtragem
Água - tratamento
Microbiota
Issue Date: 2-Sep-2023
Publisher: MDPI
Citation: VALENCIA-CÁRDENAS, Daniel et al. Evaluation of the removal and effects of Cylindrospermopsin on ripened slow sand filters. Toxins, v. 15, n. 9, 543, 2023. DOI: https://doi.org/10.3390/toxins15090543. Disponível em: https://www.mdpi.com/2072-6651/15/9/543. Acesso em: 25 jan. 2024.
Abstract: The occurrence of toxic blooms of cyanobacteria has been a matter of public health interest due to the cyanotoxins produced by these microorganisms. Cylindrospermopsin (CYN) is a cyanotoxin of particular concern due to its toxic effects on humans. This study investigated the removal and effects of CYN in ripened slow sand filters (SSFs) treating water from Paranoá Lake, Brasilia, Brazil. Four pilot-scale SSFs were ripened and operated for 74 days. Two contamination peaks with CYN were applied along the filtration run. The improvement of any of the evaluated water quality parameters was not affected by the presence of CYN in the raw water. The SSFs efficiently removed CYN, presenting concentrations lower than 0.8 µg/L in the filtered water. The microbiota of the SSFs were dominated by protozoa of the genus Euglypha and amoebas of the genera Arcella, Centropyxis, and Amoeba, together with some groups of rotifers. These microorganisms played a crucial role in removing total coliforms and E. coli. In addition, CYN was not identified as a determining factor in the microbiota composition.
metadata.dc.description.unidade: Faculdade de Tecnologia (FT)
Departamento de Engenharia Civil e Ambiental (FT ENC)
Licença:: (CC BY) Copyright: © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This 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/).
DOI: https://doi.org/10.3390/toxins15090543
Appears in Collections:Artigos publicados em periódicos e afins

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