Removal of Organic Compounds Found in the Wastewater through Electrochemical Advanced Oxidation Processes: A Review

Ghime, Damodhar; Ghosh, Prabir

doi:10.1134/s1023193519050057

Cited by 42 publications

(8 citation statements)

References 126 publications

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“…In this type of oxidation, the compound to be degraded reacts to the oxidants, which have been electrochemically generated in situ [27]. In this process, organic compounds directly react with heterogeneous hydroxyl radicals (OH • ), formed by oxidation of water at the surface of anode with high oxygen overpotential [29].…”

Section: Advanced Oxidation Processes For Wastewater Treatmentmentioning

confidence: 99%

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Effectiveness of Advanced Oxidation Processes in Wastewater Treatment: State of the Art

Bermúdez

Martín-Pascual

Martínez

et al. 2021

Water

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In recent years, many scientific studies have focused their efforts on quantifying the different types of pollutants that are not removed in wastewater treatment plants. Compounds of emerging concern (CECs) have been detected in different natural environments. The presence of these compounds in wastewater is not new, but they may have consequences in the future. These compounds reach the natural environment through various routes, such as wastewater. This review focuses on the study of tertiary treatment with advanced oxidation processes (AOPs) for the degradation of CECs. The main objective of the different existing AOPs applied to the treatment of wastewater is the degradation of pollutants that are not eliminated by means of traditional wastewater treatment.

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Section: Advanced Oxidation Processes For Wastewater Treatmentmentioning

confidence: 99%

“…Fractures, drains, soak ways, and sumps can provide rapid transport routes to groundwater, which bypass some of the natural attenuation potential provided by shallow unsaturated zones and the soil [107]. Pesticides and insecticides have become pervasive environmental problems due to their widespread use [29].…”

Section: Pesticidesmentioning

confidence: 99%

Effectiveness of Advanced Oxidation Processes in Wastewater Treatment: State of the Art

Bermúdez

Martín-Pascual

Martínez

et al. 2021

Water

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“…The review focuses on the innovative application of electro-Fenton for degradation of hazardous waste [10] Several reviews on the Fenton process are available in the literature (Table 1). These review papers discuss various aspects of the Fenton process in treating wastewater containing various organic compounds.…”

Section: Fentonmentioning

confidence: 99%

“…H2(g) + O2(g) à H2O2 (10) As the acidic and basic compounds are formed in the cell, the adjustment of pH can easily be achieved. The results of their experiment on EF-assisted Rhodamine B (RhB) degradation shows that the H2O2 formation was dependent on acidic pH, and the RhB decay was optimum at pH 3 and 4, while the one catalyzed with Fe 2+ was optimum at pH 2.…”

Section: Electro-fenton (Ef) Processmentioning

confidence: 99%

Fenton Reagent for Organic Compound Removal in Wastewater

et al. 2020

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The improper treatment of wastewater has cost humanity a large amount of access to clean water. Treating wastewater, by definition, means to remove pollutants, either physically or chemically. A chemical method of treating wastewater, the Fenton process, was deemed useful for the job. It includes a solution-based reaction that produces radicals to oxidize and break pollutants down. Variations of the Fenton process, each with their unique method, have been developed to increase the process’s efficacy and efficiency further. Admittedly, however, the information on this subject is relatively few, when compared to other more recent methods of treatment. This paper aims to present and discuss a wide variety of information on the Fenton process and its derivatives, including Electro-Fenton, Sono-Fenton, and Photo-Fenton among others.

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“…The processes are becoming increasingly popular, particularly in industrial settings, as they are generally accepted to be environmentally friendly and very much in line with the Clean Production strategy (minimizing the volume of contaminants released into the environment) [19][20][21]. Among the most efficient and fastest developing AOPs are the electrochemical ones [22,23], which include: anodic oxidation, anodic oxidation with electrogenerated H 2 O 2 , electro-Fenton, photoelectro-Fenton, and solar photoelectro-Fenton [24].…”

Section: Introductionmentioning

confidence: 99%

Kinetics of the Organic Compounds and Ammonium Nitrogen Electrochemical Oxidation in Landfill Leachates at Boron-Doped Diamond Anodes

et al. 2021

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Electrochemical oxidation (EO) of organic compounds and ammonium in the complex matrix of landfill leachates (LLs) was investigated using three different boron-doped diamond electrodes produced on silicon substrate (BDD/Si)(levels of boron doping [B]/[C] = 500, 10,000, and 15,000 ppm—0.5 k; 10 k, and 15 k, respectively) during 8-h tests. The LLs were collected from an old landfill in the Pomerania region (Northern Poland) and were characterized by a high concentration of N-NH4+ (2069 ± 103 mg·L−1), chemical oxygen demand (COD) (3608 ± 123 mg·L−1), high salinity (2690 ± 70 mg Cl−·L−1, 1353 ± 70 mg SO42−·L−1), and poor biodegradability. The experiments revealed that electrochemical oxidation of LLs using BDD 0.5 k and current density (j) = 100 mA·cm−2 was the most effective amongst those tested (C8h/C0: COD = 0.09 ± 0.14 mg·L−1, N-NH4+ = 0.39 ± 0.05 mg·L−1). COD removal fits the model of pseudo-first-order reactions and N-NH4+ removal in most cases follows second-order kinetics. The double increase in biodegradability index—to 0.22 ± 0.05 (BDD 0.5 k, j = 50 mA·cm−2) shows the potential application of EO prior biological treatment. Despite EO still being an energy consuming process, optimum conditions (COD removal > 70%) might be achieved after 4 h of treatment with an energy consumption of 200 kW·m−3 (BDD 0.5 k, j = 100 mA·cm−2).

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Removal of Organic Compounds Found in the Wastewater through Electrochemical Advanced Oxidation Processes: A Review

Cited by 42 publications

References 126 publications

Effectiveness of Advanced Oxidation Processes in Wastewater Treatment: State of the Art

Effectiveness of Advanced Oxidation Processes in Wastewater Treatment: State of the Art

Fenton Reagent for Organic Compound Removal in Wastewater

Kinetics of the Organic Compounds and Ammonium Nitrogen Electrochemical Oxidation in Landfill Leachates at Boron-Doped Diamond Anodes

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