Electrochemical oxidation remediation of real wastewater effluents — A review

Garcia‐Segura, Sergi; Ocon, Joey D.; Chong, Meng Nan

doi:10.1016/j.psep.2017.09.014

Cited by 545 publications

(201 citation statements)

References 146 publications

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“…[1]. Up to pH 3, the predominant active Cl species is Cl 2 ; at pH 3 to 8, the dominant species is HClO, and for pH >8, ClO − prevails (Ksiazek et al, 2017; Moreira et al, 2017; Garcia‐Segura et al, 2018). In this study, the wastewater pH was not modified; it was ∼7.4 to 7.9 (Table 2) after the electrooxidative process.…”

Section: Resultsmentioning

confidence: 99%

“…The electrooxidation consists of generating, by electrochemical means, very powerful oxidizing agents such as the OH − radical), which can interact and degrade organic pollutants. The main advantages of this process are the absence of sludge production, easy automation, and the possibility of degrading the organic pollutants until the final step of mineralization (Moreira et al, 2017; Dominguez et al, 2018; Garcia‐Segura et al, 2018). This approach can help to eliminate residual antibiotics in the aquacultural effluent to decrease bacterial resistance and effects on the environment and to restore water quality sufficiently high for nonpotable purposes.…”

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confidence: 99%

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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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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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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Degradation of Chloramphenicol in Synthetic and Aquaculture Wastewater Using Electrooxidation

Romero-Soto¹,

Dia

Leyva-Soto³

et al. 2018

J of Env Quality

View full text Add to dashboard Cite

show abstract

“…However, lesser mineralization rate was observed compared to the BDD anode. BDD anode exhibits higher oxygen evolution potential (E 0 =2.2–2.6 V/SHE) compared to other reported anode materials ,,. The diamond electrode displays the properties of high resistance, high thermal and chemical stability with purest sp 3 carbon content.…”

Section: Types Of Doped Diamond Electrodesmentioning

confidence: 90%

Environmental Applications of Boron‐Doped Diamond Electrodes: 1. Applications in Water and Wastewater Treatment

Nidheesh

Divyapriya

Oturan³

et al. 2019

ChemElectroChem

128

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Over the past few decades, environmental applications of the boron‐doped diamond (BDD) electrode are reported to be vast and versatile. Applications of BDD electrodes in the field of electrochemical advanced oxidation processes (EAOPs) for the abatement of toxic persistent organic pollutants are significant, owing to the easy and effective way of treatment. This article focuses on highlighting and summarizing the applications of the BDD electrode for the treatment of different synthetic and real wastewaters, such as those involved in pharmaceuticals and personal care products, pesticides/herbicides, dyes, etc. We also review the processes and methodologies involving the synthesis of BDD electrodes and summarize the desirable characteristic features required for the application of EAOPs. Applications of BDD electrodes for the treatment of wastewater through different EAOPs, including anodic oxidation, electro‐Fenton, coupling processes such as electro‐Fenton pyrite, bioelectro‐Fenton, and their recent advancements are also discussed in detail. It envisages the greater potential for complete treatment of different toxic wastewater effluents. This Review shows that the application of BDD electrodes in the field of wastewater treatment is tremendous and proves to be a promising material for future perspectives.

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“…As such, few studies [67][68][69] have reported faster and higher degradation and mineralization of organic pollutants in Milli-Q water, reversed osmosis water and tap water compared to either surface water (river water) or ground water during electrooxidation with BDD electrode. The presence of radical scavenging anions such as chlorides and carbonates as well as natural organic matter (NOM) may reduce the quantity of available hydroxyl radicals in the reaction cage and in turn, the degradation and mineralization efficiency of the targeted pollutants since the BDD( * OH) is a non-selective oxidizing agent.…”

Section: Reactive Oxygen Speciesmentioning

confidence: 99%

Nature, Mechanisms and Reactivity of Electrogenerated Reactive Species at Thin‐Film Boron‐Doped Diamond (BDD) Electrodes During Electrochemical Wastewater Treatment

2019

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Electrooxidation of hazardous organic pollutants contaminating wastewater using thin-film boron-doped diamond (BDD) electrodes is an efficient and well-studied treatment technique. In this review, the three main reactive species, namely: reactive oxygen, chlorine and sulfate species, which can be electrogenerated and then participate in the oxidation processes during electrooxidative wastewater treatment using BDD electrodes, are discussed. The main factors affecting the nature and quantity of the electrogenerated reactive species, specifically the composition of the BDD electrode (doping level and sp 3 /sp 2 ratio) and the operating parameters (working current density and composition of water matrix been electrolyzed) were explained with relative examples. Extensive discussion on mode and reactivity of the three reactive species with organic pollutants during electrooxidation was provided and the future perspectives and direction of research on reactive species generated on BDD electrodes were also discussed.[a] Dr.

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Electrochemical oxidation remediation of real wastewater effluents — A review

Cited by 545 publications

References 146 publications

Degradation of Chloramphenicol in Synthetic and Aquaculture Wastewater Using Electrooxidation

Degradation of Chloramphenicol in Synthetic and Aquaculture Wastewater Using Electrooxidation

Environmental Applications of Boron‐Doped Diamond Electrodes: 1. Applications in Water and Wastewater Treatment

Nature, Mechanisms and Reactivity of Electrogenerated Reactive Species at Thin‐Film Boron‐Doped Diamond (BDD) Electrodes During Electrochemical Wastewater Treatment

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