2024-03-29T07:12:59Zhttps://repositori.uji.es/oai/requestoai:repositori.uji.es:10234/1823272024-02-21T12:47:53Zcom_10234_7013com_10234_9com_10234_33596col_10234_8638col_10234_33597
Repositori UJI
author
Serna-Galvis, Efraim A.
author
Botero-Coy, Ana Maria
author
Martínez-Pachón, Diana
author
Moncayo-Lasso, Alejandro
author
Ibáñez, Maria
author
Hernandez, Felix
author
Torres-Palma, Ricardo A.
2019-04-15T18:21:57Z
2019-04-15T18:21:57Z
2019
Serna-Galvis, Efraim A., et al. "Degradation of seventeen contaminants of emerging concern in municipal wastewater effluents by sonochemical advanced oxidation processes." Water research, 2019, vol. 154, p. 349-360
0043-13541879-2448
http://hdl.handle.net/10234/182327
https://doi.org/10.1016/j.watres.2019.01.045
The simultaneous degradation of seventeen emerging concern pollutants in effluent
from the municipal wastewater treatment plant (MWTP) of Bogotá-Colombia was
studied using high frequency ultrasound (375 kHz). The considered compounds in the
effluent corresponded to pharmaceuticals (diclofenac, carbamazepine, venlafaxine,
ciprofloxacin, norfloxacin, valsartan, losartan, irbesartan, sulfamethoxazole,
clarithromycin, azithromycin, erythromycin, metronidazole, trimethoprim and the high potentiality of the sono-photo-Fenton/oxalic acid system for the pollutants
elimination in real-world wastewater matrices.
clindamycin); cocaine and its major metabolite benzoylecgonine. Due to limitation of the
MWTP for the pollutants elimination, ultrasound was applied to remove these
compounds. Interestingly, ultrasonic physical action led to releasing of ciprofloxacin,
norfloxacin, diclofenac and sulfamethoxazole from suspended solids, whereas the
chemical effects induced degradation of the rest of compounds. For the latter ones, an
interesting correlation between the sonodegradation and arithmetic multiplication
between hydrophobicity and concentration of pollutants was established. Afterwards,
the sonochemical process was complemented with ferrous ions (sono-Fenton), ferrous
ions plus light (sono-photo-Fenton) or ferrous ions plus light in presence of oxalic acid
(sono-photo-Fenton/oxalic acid). Additionally, to clarify fundamental aspects of the
different systems, individual treatments in distilled water of a model pollutant (valsartan)
were performed. The complemented processes significantly enhanced all compounds
degradation, following the order: sono-photo-Fenton/oxalic acid > sono-photo-Fenton ~
sono-Fenton > sonochemistry. The Fe2+ addition improved the pollutants elimination by
generation of more hydroxyl radicals in the solution bulk. Meanwhile, oxalic acid
avoided Fe3+ precipitation favoring the iron catalytic cycle. Thus, the work demonstrates
eng
emerging pollutants
high frequency ultrasound
advanced oxidation processes
wastewater treatment
sono-photo-Fenton
sono-photo-Fenton/oxalic acid
Degradation of seventeen contaminants of emerging concern in municipal wastewater effluents by sonochemical advanced oxidation processes
info:eu-repo/semantics/article
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