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SILVA, P. R. M. DA. Removal of estrogenic activity of the hormone 17 β-estradiol in oxidation processes for drinking water. 2013. 98 p. Dissertação (Mestrado) – Escola de Engenharia de São Carlos, Universidade de São Paulo , São Carlos, 2013. Many reactive chemical oxidants cause the disruptio n of the complex molecular structures of various types of organic compounds decomposing them into simpler structures and providing better conditions for effective action of micro-org anisms in the biological degradation. The presence of hormones, including 17 β-estradiol in sewage treatment plants and groundwat er and surface water shows the need for an evaluation of conventional treatment processes. The aim of this study was the analysis and removal of h rmones through techniques of chlorination and ozonation of real samples of outpu t filter water in water treatment plants (WTP), operated by the Serviço Autônomo de Água e E sgoto (SAAE) of São Carlos (Center WTP), which captures waters from Espraiado stream a nd Feijão stream and the Sociedade de Abastecimento de Água e Saneamento S/A (SANASA) de Campinas (WTPs 3 and 4), which captures water from the Atibaia river. Assays were performed contaminating the samples with 17β-estradiol, which is the natural hormone more prese nt in the environment, in a concentration of 6.000 ng L -1 submitting themselves to treatment with dosages of ar und 0.5 to 2.0 mg L of these oxidants in times of contact, respectivel y, 10 and 30 min. The samples subjected to contamination and treatment and contro l samples (without contamination and treatment) were analyzed by removing 17 β-estradiol with estrogenic activity verification of the samples by Bioluminescent Assays or Estrogen-In ducible Yeast Expression System (BLYES), which was presented as a simple tool. The results presented here demonstrate that the oxidation by ozone was more effective than with chlorine to remove estrogenic activity caused solely by 17 β-estradiol for an initial dosage of the hormone rel atively high (6000 ngL ) However, in all experiments the final concentrati on of estrogenic activity remained above the limit of quantification of these hormones , indicating that removal was not complete, even under favorable conditions, clean matrix with quality for drinking water physicochemical parameters.

Remoção de atividade estrogênica do hormônio 17&beta;-Estradiol em processos de oxidação de águas para abastecimento

Remoção de atividade estrogênica do hormônio 17β-Estradiol em processos de oxidação de águas para abastecimento