Next Article in Journal
A Review on Ultrasonic Catalytic Microbubbles Ozonation Processes: Properties, Hydroxyl Radicals Generation Pathway and Potential in Application
Next Article in Special Issue
Advanced Design and Synthesis of Composite Photocatalysts for the Remediation of Wastewater: A Review
Previous Article in Journal
Heterogeneous Catalytic Synthesis of 2-Methylbenzimidazole from 2-Nitroaniline and Ethanol Over Mg Modified Cu-Pd/γ-Al2O3
Previous Article in Special Issue
Ag/Ag2O as a Co-Catalyst in TiO2 Photocatalysis: Effect of the Co-Catalyst/Photocatalyst Mass Ratio
Open AccessArticle

The Role of Mediated Oxidation on the Electro-irradiated Treatment of Amoxicillin and Ampicillin Polluted Wastewater

1
Institute of Chemistry of São Carlos, University of São Paulo, P.O. Box 780, 13560-970 São Carlos-SP, Brazil
2
Chemical Engineering Department, University of Castilla-La Mancha, Edificio Enrique Costa Novella. Campus Universitario s/n, 13005 Ciudad Real, Spain
*
Author to whom correspondence should be addressed.
Catalysts 2019, 9(1), 9; https://doi.org/10.3390/catal9010009
Received: 2 November 2018 / Revised: 15 December 2018 / Accepted: 18 December 2018 / Published: 24 December 2018
In this work, the electrolysis, photoelectrolysis and sonoelectrolysis with diamond electrodes of amoxicillin (AMX) and ampicillin (AMP) solutions were studied in the context of the search for technologies capable of removing antibiotics from liquid wastes. Single-irradiation processes (sonolysis and photolysis) were also evaluated for comparison. Results showed that AMX and AMP are completely degraded and mineralized by electrolysis in both chloride and sulfate media, although the efficiency is higher in the presence of chloride. The effect of the current density on mineralization efficiency is not relevant and this may be related to the role of mediated oxidation. Irradiation by ultraviolet light or ultrasound (US) waves does not produce a synergistic effect on the mineralization of AMX and AMP solutions. This indicates that the massive formation of radicals during the combined processes can favor their recombination to form stable and less reactive species. View Full-Text
Keywords: Anodic oxidation; diamond electrodes; UV irradiation; ultrasounds; amoxicillin; ampicillin Anodic oxidation; diamond electrodes; UV irradiation; ultrasounds; amoxicillin; ampicillin
Show Figures

Graphical abstract

MDPI and ACS Style

Silva, F.L.; Sáez, C.; Lanza, M.R.; Cañizares, P.; Rodrigo, M.A. The Role of Mediated Oxidation on the Electro-irradiated Treatment of Amoxicillin and Ampicillin Polluted Wastewater. Catalysts 2019, 9, 9.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop