Decontamination of real textile industrial effluent by strong oxidant species electrogenerated on diamond electrode: Viability and disadvantages of this electrochemical technology

Solano, Aline Maria Sales; Araújo, Cynthia Kérzia Costa de; Melo, Jorge Dantas de; Peralta‐Hernández, Juan M.; Silva, Djalma Ribeiro da; Martínez‐Huitle, Carlos A.

doi:10.1016/j.apcatb.2012.10.023

Cited by 146 publications

(16 citation statements)

References 30 publications

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“…The main limitation of technology based on BDD electrodes is its high price, which hinders its use at the industrial scale. It has been shown that many biorecalcitant compounds including phenols, chlorophenols, nitrophenols, pesticides, synthetic dyes, pharmaceuticals, and industrial leachates can be completely mineralized with high current efficiency, even close to 100%, using a BDD anode [207][208][209][210][211][212][213].…”

Section: Electro-oxidative Advanced Oxidation Processesmentioning

confidence: 99%

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Cuerda-Correa

Alexandre-Franco

Fernández-González

2019

Water

518

240

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In this work, the application of advanced oxidation processes (AOPs) for the removal of antibiotics from water has been reviewed. The present concern about water has been exposed, and the main problems derived from the presence of emerging pollutants have been analyzed. Photolysis processes, ozone-based AOPs including ozonation, O3/UV, O3/H2O2, and O3/H2O2/UV, hydrogen peroxide-based methods (i.e., H2O2/UV, Fenton, Fenton-like, hetero-Fenton, and photo-Fenton), heterogeneous photocatalysis (TiO2/UV and TiO2/H2O2/UV systems), and sonochemical and electrooxidative AOPs have been reviewed. The main challenges and prospects of AOPs, as well as some recommendations for the improvement of AOPs aimed at the removal of antibiotics from wastewaters, are pointed out.

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Section: Electro-oxidative Advanced Oxidation Processesmentioning

confidence: 99%

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Cuerda-Correa

Alexandre-Franco

Fernández-González

2019

Water

518

240

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“…where M( • OH) represents the adsorbed • OH onto the anode surface M. Thus, the electrogenerated • OH acts as mediator on the mineralization of organic pollutants (Rajkumar et al 2007;Ramírez et al 2013;Aquino et al 2014;de Araújo et al 2015). It is important to stress that differently to other alternative methodologies, EO treatment of actual effluents is reported in recent literature (Tsantaki et al 2012;Solano et al 2013;Moreira et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Functional group influences on the reactive azo dye decolorization performance by electrochemical oxidation and electro-Fenton technologies

Soares

Silva

Nascimento

et al. 2017

Environ Sci Pollut Res

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Electrochemical water treatment technologies are highly promising to achieve complete decolorization of dyebath effluents, as demonstrated by several studies reported in the literature. However, these works are focused on the treatment of one model pollutant and generalize the performances of the processes which are not transposable since they depend on the pollutant treated. Thus, in the present study, we evaluate, for the first time, the influence of different functional groups that modify the dye structure on the electrochemical process decolorization performance. The textile azo dyes Reactive Orange 16, Reactive Violet 4, Reactive Red 228, and Reactive Black 5 have been selected because they present the same molecular basis structure with different functional groups. The results demonstrate that the functional groups that reduce the nucleophilicity of the pollutant hinder the electrophilic attack of electrogenerated hydroxyl radical. Thereby, the overall decolorization efficiency is consequently reduced as well as the decolorization rate. Moreover, the presence of an additional chromophore azo bond in the molecule enhances the recalcitrant character of the azo dyes as pollutants. The formation of a larger and more stable conjugated π system increases the activation energy required for the electrophyilic attack of OH, affecting the performance of electrochemical technologies on effluent decolorization.

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“…The pH should be maintained below 6 during the process [79,80] Coagulation and Adsorption by Alum Increase the concentration of sulfate and sulfide [81] Ozonation It has low COD reduction capacity [82] Chemical coagulation It is a slow technique and large amount of sludge is produced [83,84] Electrochemical oxidation Secondary salt contamination [66] Coagulation Coagulants can be associated with diseases like cancer or Alzheimer's [85,86] Electrochemical technology Produce undesirable by-products that can be harmful for environment [87,88] Ion exchange method Not effective for all dyes [89] Photochemical Sonolysis…”

Section: Combined Electrocoagulationmentioning

confidence: 99%

Implementation of Floating Treatment Wetlands for Textile Wastewater Management: A Review

et al. 2020

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The textile industry is one of the most chemically intensive industries, and its wastewater is comprised of harmful dyes, pigments, dissolved/suspended solids, and heavy metals. The treatment of textile wastewater has become a necessary task before discharge into the environment. The textile effluent can be treated by conventional methods, however, the limitations of these techniques are high cost, incomplete removal, and production of concentrated sludge. This review illustrates recent knowledge about the application of floating treatment wetlands (FTWs) for remediation of textile wastewater. The FTWs system is a potential alternative technology for textile wastewater treatment. FTWs efficiently removed the dyes, pigments, organic matter, nutrients, heavy metals, and other pollutants from the textile effluent. Plants and bacteria are essential components of FTWs, which contribute to the pollutant removal process through their physical effects and metabolic process. Plants species with extensive roots structure and large biomass are recommended for vegetation on floating mats. The pollutant removal efficiency can be enhanced by the right selection of plants, managing plant coverage, improving aeration, and inoculation by specific bacterial strains. The proper installation and maintenance practices can further enhance the efficiency, sustainability, and aesthetic value of the FTWs. Further research is suggested to develop guidelines for the selection of right plants and bacterial strains for the efficient remediation of textile effluent by FTWs at large scales.

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Decontamination of real textile industrial effluent by strong oxidant species electrogenerated on diamond electrode: Viability and disadvantages of this electrochemical technology

Cited by 146 publications

References 30 publications

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Functional group influences on the reactive azo dye decolorization performance by electrochemical oxidation and electro-Fenton technologies

Implementation of Floating Treatment Wetlands for Textile Wastewater Management: A Review

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