| Texto completo | |
| Autor(es): |
Godoy, Luiz Gustavo Rodrigues
;
Moruzzi, Rodrigo Braga
;
Odjegba, Enovwo Erere
;
Sharifi, Soroosh
;
dos Reis, Adriano Goncalves
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Brazilian Journal of Chemical Engineering; v. N/A, p. 16-pg., 2025-01-04. |
| Resumo | |
Microplastics have become a worldwide subject of significant concern as an emerging pollutant and have been repeatedly found in water supplied by drinking water treatment plants. The aim of this study was to investigate the removal of polyvinyl chloride microplastics (PVC MPs), which are among the most hazardous polymers. Alum was used as the coagulant, and anionic polyacrylamide (PAM) served as the flocculant, in both conventional and ballasted flocculation processes for water treatment. A nonintrusive imaging technique was used for monitoring floc growth and terminal settling velocity (vs) assessment. Conventional flocculation achieved the best performance with 78.2% PVC MP removal, a mean floc size of 282 mu m and a mean vs of 0.7 cm/min in a settling time of 3.5 min. The addition of 0.8 mg/L of PAM over the former condition improved the removal to 84.2%, with a mean floc size of 384 mu m and a mean vs of 1.7 cm/min. Ballasted flocculation achieved 99.6% removal in a settling time of 6 s, with a mean floc size of 481 mu m and a mean vs of 120 cm/min, which is 70-fold greater than that of conventional flocculation. This investigation underscores the potential of ballasted flocculation as a highly effective method for removing PVC MPs from drinking water. (AU) | |
| Processo FAPESP: | 23/08052-1 - Misturadores de fractal e velocidade terminal dos agregados formados |
| Beneficiário: | Rodrigo Braga Moruzzi |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 22/16772-1 - Remoção de microplástico em águas de laboratório e superficial via coagulação-floculação com o uso de coagulantes sintético e natural |
| Beneficiário: | Luiz Gustavo Rodrigues Godoy |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |