| Texto completo | |
| Autor(es): |
de Souza, Alexander Ossanes
;
Teramoto, Kazumi Kinoshita
;
de Freitas, Paloma Nathane Nunes
;
de Almeida, Eryka Costa
;
Ferreira Filho, Sidney Seckler
;
Pinto, Ernani
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | URBAN WATER JOURNAL; v. 20, n. 8, p. 11-pg., 2023-06-01. |
| Resumo | |
High nutrient input into waterbodies increases potentially toxic cyanobacteria blooms. Pre-chlorination treatment is excellent for cyanobacterial cell inactivation and dissolved cyanotoxins removal in water supply sources. This study aims to evaluate the pre-chlorination effect treatment on Microcystis aeruginosa cell integrity and its hepatotoxins (microcystins, MC) release and degradation on a laboratory scale. Loss of cell integrity is observed with increasing chlorine concentration. The maximum cell permeability without cell disintegration occurs at 2.5 mg Cl-2 L-1. Degradations up to 70% and chlorophyll-a reductions over 70% are observed after 60 min exposure, with complete degradation at 2.5 and 3 mg Cl-2 L-1. However, chlorine (Cl-2) exposure over 40.66 mg min L-1 is required for microcystins MC-LR (i.e. radicals: leucine (L) and arginine (R)) and MC-RR (i.e. radicals: arginine and arginine) oxidation oxidation to concentrations below the legislation value for water potability. (AU) | |
| Processo FAPESP: | 11/51950-3 - Prospecting volatile compounds produced by Brazilian cyanobacteria with allelopathic effects |
| Beneficiário: | Ernani Pinto Junior |
| Modalidade de apoio: | Auxílio à Pesquisa - Parceria para Inovação Tecnológica - PITE |
| Processo FAPESP: | 10/50739-4 - Remoção de interferentes endócrinos no tratamento de água para abastecimento público por processos de adsorção e nanofiltração |
| Beneficiário: | Sidney Seckler Ferreira Filho |
| Modalidade de apoio: | Auxílio à Pesquisa - Parceria para Inovação Tecnológica - PITE |