Evaluating emerging contaminant removal efficiency: analytical methodology and implications for water treatment in the southeastern Brazilian Reservoir

Autor(es)

Ossanes de Souza, Alexander ; Nunes de Freitas, Paloma Nathane ; Souza Passos, Larissa ; Pereira da Silva, Nubia ; Guimaraes de Figueiredo, Natalia ; Ferreira Filho, Sidney Seckler ; Pinto, Ernani

• Tipo de documento: Artigo Científico
• Fonte: URBAN WATER JOURNAL; v. N/A, p. 15-pg., 2025-06-04.

Resumo

Endocrine-disrupting compounds and pharmaceutical actives are frequently found in contaminated surface waters, making their detection and quantification essential. This study focused on five contaminants: 17 alpha-ethinylestradiol, 4-nonylphenol, bisphenol A, amoxicillin, and caffeine. Analytical methods using HPLC-DAD and LC-MS/MS were developed, demonstrating high selectivity and sensitivity, while minimizing matrix interferences and improving accuracy. To evaluate treatment efficiency, conventional processes were simulated through Jar Tests with samples from the Guarapiranga reservoir (S & atilde;o Paulo, Southeast Brazil). Results showed that the presence of organic matter adversely affects all treatment stages, reducing contaminant removal. Optimal conditions for removing conventional parameters such as color and turbidity differ from those required to eliminate micropollutants. These findings highlight the limitations of conventional treatment and emphasize the importance of continuous monitoring, as well as the development of complementary technologies capable of fully degrading potentially toxic contaminants. (AU)

• Processo FAPESP: 13/07914-8 - FoRC - Centro de Pesquisa em Alimentos
• Beneficiário: Bernadette Dora Gombossy de Melo Franco
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 21/00149-0 - Tratamento e fracionamento seletivo de cianobactérias em florações para produção de insumos de valor agregado
• Beneficiário: Ernani Pinto Junior
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 21/14239-1 - Efeitos da interação entre organofosforados sintéticos e natural em Oreochromis niloticus (Teleostei: Cichlidae)
• Beneficiário: Larissa Souza Passos
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 24/17390-0 - Desenvolvimento dispositivo remoto para a otimização do tratamento de água
• Beneficiário: Alexander Ossanes de Souza
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado