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Removal of β-lactam antibiotics from pharmaceutical wastewaters using photo-Fenton process at near-neutral pH by Ana L. Giraldo-Aguirre; Efraím A. Serna-Galvis; Edgar D. Erazo-Erazo; Javier Silva-Agredo; Héctor Giraldo-Ospina; Oscar A. Flórez-Acosta; Ricardo A. Torres-Palma is a scholarly article available to read on EtoBox.

What is Removal of β-lactam antibiotics from pharmaceutical wastewaters using photo-Fenton process at near-neutral pH about?

In this work, the photo-Fenton process at nearneutral pH was applied for the removal of the β-lactam antibiotic oxacillin (OXA) in water using artificial and sunlight. Initially, the main variables of the process (Fe(II), H 2 O 2 , and light power) were optimized by a statistical factorial design (2 3 with center points). The experimental design indicated that 90 μmol L -1 of Fe(II), 10 mmol L -1 of H 2 O 2 , and 30 W of power light were the favorable conditions for degradation of OXA at 203 μmol L -1 . In the photo-Fenton system, the H 2 O 2 alone, UV-light/H 2 O 2 , and Fe(II)/H 2 O 2 subsystems presented a significant participation on antibiotic removal. Moreover, based on the primary organic transformation products, a mechanism of OXA degradation was proposed. Under the favorable operational conditions, both the pollutant and the antimicrobial activity were eliminated after 50 min of process application. Although at 480 min of treatment, only 5% of mineralization was achieved, the level of biodegradability of the solutions increased from 0.08 to 0.98. Interestingly, the presence of pharmaceutical additives (glucose, isopropanol, and oxalic acid) had a moderate interference on t

Author

Ana L. Giraldo-Aguirre; Efraím A. Serna-Galvis; Edgar D. Erazo-Erazo; Javier Silva-Agredo; Héctor Giraldo-Ospina; Oscar A. Flórez-Acosta; Ricardo A. Torres-Palma

Publisher

Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC; Publons; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0944-1344)

Published

2017

Language

EN