| Texto completo | |
| Autor(es): |
de Souza, Larissa Pinheiro
;
Sanches-Neto, Flavio Olimpio
;
Ribeiro, Julio Cesar de Oliveira
;
Ramos, Bruno
;
Carvalho-Silva, Valter H.
;
Teixeira, Antonio Carlos Silva Costa
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING; v. 19, n. 2, p. 11-pg., 2025-02-01. |
| Resumo | |
This study introduces an innovative screening approach to evaluate advanced oxidation processes (AOPs) as a preliminary diagnostic tool for degrading emerging contaminants (EC). It includes the design, prototyping, and cost-benefit analysis of circular photochemical reactors with flat and spiral internal geometries. Three-dimensional (3D) printing was used for reactor prototyping, providing flexibility and economy, and this stage was assisted by the hydrodynamic analysis of the prototypes based on residence time distribution (RTD) and macromixing models. The research evaluates the degradation of a model contaminant of emerging concern, fluoxetine (FLX) hydrochloride, using the solar/persulfate (PS) process in two water matrices (i.e., ultrapure water and sewage treatment plant effluent) to optimize reactor performance. The study also proposes primary theoretical pathways for fluoxetine degradation involving hydroxyl and sulfate radicals, as well as predicting the toxicity of the parent compound and its primary metabolites using quantitative structure-activity relationship (QSAR) models. The spiral reactor exhibits improved hydrodynamic behavior, closely resembling continuous stirred and plug flow reactors in series. Despite a slightly lower specific degradation rate in real wastewater, the solar/PS process remains effective for both matrices. By-products generated via the sulfate radical pathway are expected to be less toxic than those formed by hydroxyl radicals (HO<middle dot>) attack. (AU) | |
| Processo FAPESP: | 18/21271-6 - Degradação de poluentes de interesse emergente por luz solar: fotorreatores e tratamentos inovadores |
| Beneficiário: | Antonio Carlos Silva Costa Teixeira |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 22/13583-3 - 5th Iberoamerican Conference on Advanced Oxidation Technologies (CIPOA) |
| Beneficiário: | Bruno Ramos |
| Modalidade de apoio: | Auxílio à Pesquisa - Reunião - Exterior |
| Processo FAPESP: | 19/24158-9 - Destinação ambiental de poluentes emergentes em águas superficiais e alternativas sustentáveis de mitigação: abordagem híbrida experimental-computacional |
| Beneficiário: | Antonio Carlos Silva Costa Teixeira |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |