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Chloramphenicol (CAP) is a broad-spectrum antibiotic widely used in animal farming and aquaculture industries. Despite its ban in many countries around the world, it is still used in several developing countries, with harmful effects on the surrounding aquatic environment. In this study, an electrooxidation process using a Ti/PbO anode was used to investigate the degradation of CAP in both synthetic solution and real aquaculture wastewater. A central composite design was used to determine the optimum conditions for CAP removal. Current intensity and treatment time had the most impact on the CAP removal. These two factors accounted for ∼90% of CAP removal. The optimum conditions found in this study were current intensity of 0.65 A, treatment time of 34 min, and CAP initial concentration of 0.5 mg L. Under these conditions, 98.7% of CAP removal was achieved with an energy consumption of 4.65 kW h m. The antibiotic was not present in the aquaculture wastewater, which received 0.5 mg L of CAP and was treated (by electrooxidation) under the optimum conditions. A complete removal of CAP was obtained after 34 min of treatment. According to these results, electrooxidation presents an option for the removal of antibiotics, secondary compounds, and other organic and inorganic compounds from solution.

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“…In fact, OH − radicals formed from the water oxidation can react among themselves to form H 2 O 2 , following Eq. [4] (Michaud et al, 2003):…”

Section: Production Of Other Oxidantsmentioning

confidence: 99%

Degradation of Chloramphenicol in Synthetic and Aquaculture Wastewater Using Electrooxidation

Romero-Soto¹,

Dia

Leyva-Soto³

et al. 2018

J of Env Quality

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“…Recently, boron doped diamond (BDD) anode electro-oxidation has been considered as a new advanced oxidation process with many advantages compared to other known chemical and photochemical ones. Diamond anode surfaces allow the production of large quantities of hydroxyl radicals from water electrolysis [9][10][11]. In an electrochemical cell, BDD is able to generate free hydroxyl radicals from water oxidation, which are well known to be very powerful oxidizing agents.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Oxidation of Benzoic Acid Derivatives on Boron Doped Diamond: Voltammetric Study and Galvanostatic Electrolyses

Louhichi

Bensalash

Gadri

2006

Chem. Eng. Technol.

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The electrochemical oxidation of aqueous wastes polluted with benzoic and salicylic acids and phthalic anhydride on boron-doped diamond electrodes has been studied. The complete mineralization of the organic waste has been obtained in each case regardless of the nature of the compound, composition of the solution, and current density. Different voltammetric behaviors between benzoic acid, salicylic acid, and phthalic anhydride were obtained in the voltammetric study, but no differences in the electrochemical oxidation of the three compounds seems to exist in the bulk electrolyses study. The total mineralization of the three compounds at different current densities confirms that the oxidation must occur directly on the electrode surface and/or by hydroxyl radicals generated by decomposition of water and/or by other oxidants electro-generated from the sulfate oxidation.

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“…2 ) in the bulk solution (Michaud et al 2003;Diao et al 2004;Jeong et al 2006;Kraft 2008;Bruguera-Casamada et al 2017;Liang et al 2018). OH • are thought to be the major ROS player in these systems (Diao et al 2004), although inactivation attributable to OH • in these systems is limited to the immediate vicinity of the electrode due to OH Pagination not final (cite DOI) / Pagination provisoire (citer le DOI) to the cell membrane, which ruptures and releases cell constituents, leading to inactivation (Diao et al 2004).…”

Section: Resultsmentioning

confidence: 99%

“…1 and 2). The reduced rate of R. solani inactivation was likely caused by competing reactions with components present in the fertilizer that may have acted as sinks for electrochemically generated disinfectant products (e.g., OH • , other ROS) in the solution (Michaud et al 2003;Sirés et al 2014).…”

Section: Pathogen Inactivation In the Presence Of Fertilizer Saltsmentioning

confidence: 99%

An electrochemical advanced oxidation process (EAOP) for the inactivation ofRhizoctonia solaniin fertigation solutions

Lévesque

Graham

Bejan³

et al. 2020

Can. J. Plant Sci.

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Boron-doped diamond anodes and stainless-steel cathodes were employed in an electrochemical flow cell and evaluated for inactivation efficacy on the plant pathogen Rhizoctonia solani J.G. Kühn [Thanatephorus cucumeris (A.B. Frank) Donk] in hydroponic fertigation water. The electrochemical system showed promise as an electrochemical advanced oxidation process (EAOP) in that significant reductions in R. solani (AG-8) were achieved; however, to achieve complete inactivation the system required supplemental chloride (20 mg L−1), while using 9.09 mA cm−2. The chloride allowed for low levels of free chlorine (≤0.17 mg L−1) that were more active in the bulk solution, complementing the electrode surface EAOP reactions. Perchlorate production was an initial concern but was found to be negligible under the conditions tested. Small but significant increases in nitrate, ammonium, and sulphate were observed following treatment. These increases are hypothesized to originate from the degradation of proteins and amino acids released during pathogen cell disruption.

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Cited by 280 publications

References 26 publications

Degradation of Chloramphenicol in Synthetic and Aquaculture Wastewater Using Electrooxidation

Degradation of Chloramphenicol in Synthetic and Aquaculture Wastewater Using Electrooxidation

Electrochemical Oxidation of Benzoic Acid Derivatives on Boron Doped Diamond: Voltammetric Study and Galvanostatic Electrolyses

An electrochemical advanced oxidation process (EAOP) for the inactivation ofRhizoctonia solaniin fertigation solutions

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