Degradation of Dipyrone by the Electro-Fenton Process in an Electrochemical Flow Reactor with a Modified Gas Diffusion Electrode

Barros, Willyam R.P.; Borges, Michelle P.; Reis, Rafael M.; Rocha, Robson S.; Bertazzoli, Rodnei; Lanza, Marcos R.V.

doi:10.5935/0103-5053.20140160

Cited by 3 publications

(2 citation statements)

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“…The reactor used in this study has been employed previously by Reis et al [34] for generating H 2 O 2 and by Barros et al [47] for the degradation of organic pollutants. In both of these studies, the reactor was operated in the batch mode and excellent efficiencies were achieved.…”

Section: Resultsmentioning

confidence: 99%

New operational mode of an electrochemical reactor and its application to the degradation of levofloxacin

Rocha

Valim

Trevelin

et al. 2017

Journal of Environmental Chemical Engineering

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The flow-by electrochemical reactor is generally used in batch mode with extended process time in order to achieve high efficiency in the removal of organic contaminant from aqueous solution. Moreover, the batch mode system is inappropriate for the treatment of wastewater in high volume or as a continuous stream. This paper presents a new operational mode for the electrochemical reactor in which the electrolyte passes over the electrodes just once at a reduced flow rate and with high hydraulic retention time. The concentration of hydrogen peroxide generated in the reactor running in the single-pass flow mode attained 10.2 mg L −1 cm −2 in acid medium, a value similar to that obtained previously with the same type of reactor operating in batch mode. In the single-pass mode, the electrochemical reactor showed high rates of removal of the antibiotic levofloxacin (initial 50 mg L −1) and organic load (initial 130 mg L −1) up to 99 and 86%, respectively, when operated under electro-or photo-Fenton degradation conditions (acid medium with Fe 2+ ions; absence or presence of UV irradiation). Degradation of levofloxacin generated high levels of nitrate (up to 4.5 mg L −1) and various byproducts that could be identified by liquid chromatography-mass spectrometry.

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Section: Resultsmentioning

confidence: 99%

New operational mode of an electrochemical reactor and its application to the degradation of levofloxacin

Rocha

Valim

Trevelin

et al. 2017

Journal of Environmental Chemical Engineering

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“…Some work has been done to either electrochemically generate H 2 O 2 [5,6] or to degrade metamizol using supported electrodes [7,8,9,10]. Reis et al [7] used anodes comprising boron-doped diamond films supported on titanium in a flow-by reactor.…”

Section: Introductionmentioning

confidence: 99%

The Analgesic Metamizol (Dipyrone). Part 2: Adsorption, Oxidative and Reductive Degradation

Ambalavanar¹,

Habekost²

2018

WJCE

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A drastic increase in pharmaceuticals consumption has resulted in a high load of pharmaceuticals in wastewater, resulting in an obvious need for detoxification. Metamizol is a typical representative of an analgesic non-steroidal agent that hydrolyzes into 4-Methylantipyrine (4-MAA). In this article, we show some simple adsorption, oxidation and reduction experiments that can either collect or degrade 4-MAA and some of its related metabolism products. The main successful method in detoxifying these substances is shown to be reduction at moderate temperature.

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Adsorption of dypirone from aqueous solution using Moringa oleifera seed husks

Quesada¹,

Cusioli²,

Aráujo³

et al. 2021

Acta Hortic.

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Degradation of Dipyrone by the Electro-Fenton Process in an Electrochemical Flow Reactor with a Modified Gas Diffusion Electrode

Cited by 3 publications

References 0 publications

New operational mode of an electrochemical reactor and its application to the degradation of levofloxacin

New operational mode of an electrochemical reactor and its application to the degradation of levofloxacin

The Analgesic Metamizol (Dipyrone). Part 2: Adsorption, Oxidative and Reductive Degradation

Adsorption of dypirone from aqueous solution using Moringa oleifera seed husks

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