Degradation of gestodene (GES)–17α-ethinylestradiol (EE2) mixture by electrochemical oxidation
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2016-10-01 |
| Journal | Journal of Water and Health |
| Authors | Hugo Alejandro Nájera-Aguilar, Rubén Fernando Gutiérrez-Hernández, Rocío González de los Santos, Carlos Manuel García-Lara, Roger I. Méndez‐Novelo |
| Institutions | Universidad de Ciencias y Artes de Chiapas, Autonomous University of Yucatán |
| Citations | 8 |
Abstract
Section titled “Abstract”Evidence of the negative effects of several pharmaceutical molecules, such as hormones and steroids, on the environment can be observed throughout the world. This paper presents the results of the anodic oxidation of the mixture of gestodene steroid hormones and 17 α-ethinylestradiol present in aqueous medium. The tests were conducted in an undivided cell containing a working volume of 50 mL, using a Na2SO4 solution as support electrolyte and boron-doped diamond electrodes. The experiments were adjusted to the structure of a 33 factorial design. The evaluated factors were: support electrolyte concentration (0.02, 0.05, and 0.10 M), pH of the reaction media (2, 3, and 4), and current density (16, 32, and 48 mA cm−2). Under the optimum conditions (0.02 M Na2SO4, pH 4, and current density of 32 mA cm−2), the degradation of at least 93% of the initial concentration of gestodene and 17α-ethinylestradiol was reached in a reaction time of 5 and 10 min, respectively. The complete degradation of both molecules required 15 min of reaction. Under these conditions, the degradation profile of the pharmaceutical mixture as each one of the active ingredients, followed a pseudo-first order kinetic behavior (kmix = 0.0321, kGES = 0.4206, and kEE2 = 0.3209 min−1).
Tech Support
Section titled “Tech Support”Original Source
Section titled “Original Source”References
Section titled “References”- 2012 - Standard Methods for the Examination of Water and Wastewater
- 2007 - Evidence of estrogenic mixture effects on the reproductive performance of fish [Crossref]
- 2011 - Photo-Fenton degradation of the insecticide esfenvalerate in aqueous medium using a recirculation flow-through UV photoreactor [Crossref]
- 2013 - TiO2-assisted photocatalytic degradation of diclofenac, metoprolol, estrone and chloramphenicol as endocrine disruptors in water [Crossref]
- 2013 - Electrochemical remediation of 17α-ethinylestradiol
- 2007 - Estrogenic environmental endocrine-disrupting chemical effects on reproductive neuroendocrine function and dysfunction across the life cycle [Crossref]
- 2012 - Sonodegradation of 17a-ethynylestradiol in environmentally relevant matrices: laboratory-scale kinetic studies [Crossref]
- 2011 - BDD anodic oxidation as tertiary wastewater treatment for the removal of emerging micropollutants, pathogens and organic matter [Crossref]
- 2007 - Ultrasound-induced destruction of low levels of estrogen hormones in aqueous solutions [Crossref]
- 2008 - Degradation and estrogenic activity removal of 17β-estradiol and 17α-ethinylestradiol by ozonation and O3/H2O2 [Crossref]