Anodic oxidation of surfactants and organic compounds entrapped in micelles – Selective degradation mechanisms and soil washing solution reuse

Trellu, Clément; Oturan, Nihal; Péchaud, Yoan; Hullebusch, Eric D. van; Esposito, Giovanni; Oturan, Mehmet A.

doi:10.1016/j.watres.2017.04.013

Cited by 85 publications

(65 citation statements)

References 46 publications

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“…On the other hand, the results obtained on the PbO 2 anode show (data no showed) that the concentration of these carboxylic acids decreases weakly with the electrolysis time and remain present in the solution even after 240 min of treatment. This result was already highlighted by Zazou et al [4], Flores et al [12] and Trellu et al [21].…”

Section: Identification and Evolution Of Intermediatessupporting

confidence: 62%

“…In our previous studies, anodic oxidation process was successfully applied to the degradation of different organic pollutants [19][20][21] and pesticides such as isothiazolin-3-ones, thiamethoxam and 2-chlorophenol [22][23][24]. The aim of this work was to evaluate the potential application of anodic oxidation process using BDD and PbO 2 anodes for the removal of a chlorinated pesticides that has not been studied until now such as 1, 2-dichlorobenzene (1, 2-DCB) and 1, 4-dihlorobenzene (1, 4-DCB).…”

Section: Introductionmentioning

confidence: 99%

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Anodic Oxidation of Chlorinated Pesticides on BDD and PbO2 Electrodes: Kinetics, Influential Factors and Mechanism Determination

Rabaaoui¹,

Kacem²,

Mohamed³

et al. 2017

Mod Chem Appl

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In this work, the removal of two pesticides 1, 2-dichlorobenzene and 1, 4-dichlorobenzene by electrolysis using BDD and Pb/PbO 2 as anodes is studied. Different operating conditions and factors affecting the treatment process including anode material, applied current density, supporting electrolyte and initial pH value were studied and optimized. Results demonstrate, as expected, that the influence of the anode material used on the degradation of pesticides was very significant in all cases. Infact electrolysis with diamond electrodes can attain the complete depletion of the pesticide and its mineralization faster than with PbO 2 anode. Electrolysis experiments strongly improves that the complete degradation of pesticides occurred in the presence of Na 2 SO 4 as conductive electrolyte at current density equals 20 mA cm -2 . Acidic pH would accelerate dichlorobenzene degradation, whereas alkaline condition showed negative effects. The disappearance of the pesticides followed a pseudo-first-order kinetics. Reversed-phase chromatography allows detecting Catechol, 2-chlorophenol and Pyrogallol as primary aromatic intermediates of 1,2-DCB and Hydroquinone, Benzoquinone and 4-chlorophenol for 1,4-DCB. Dechlorination of these products gives chloride ions Cl -. Ion-exclusion chromatography reveals the presence of maleic, formic, fumaric, malonic, glyoxylic, acetic and oxalic acid. An oxidation mechanism is proposed in agreement with other works shown in the literature.

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Section: Identification and Evolution Of Intermediatessupporting

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Anodic Oxidation of Chlorinated Pesticides on BDD and PbO2 Electrodes: Kinetics, Influential Factors and Mechanism Determination

Rabaaoui¹,

Kacem²,

Mohamed³

et al. 2017

Mod Chem Appl

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“…At similar experimental conditions, higher current density led to greater production of BDD( * OH) from water oxidation at the anode surface ( Figure 3) [64] and higher degradation and mineralization efficiency when treating organic pollutants. At similar experimental conditions, higher current density led to greater production of BDD( * OH) from water oxidation at the anode surface ( Figure 3) [64] and higher degradation and mineralization efficiency when treating organic pollutants.…”

Section: Reactive Oxygen Speciesmentioning

confidence: 89%

“…Profile of BDD( * OH) concentration during the anodic oxidation of 1 mM surfactant Tween® 80 at applied current of (-blue) 200 mA, (-red) 500 mA and (-black) 1000 mA calculated using the model of Kalpaka et al (2009) [52]. Reprinted with the permission of ref [64]. …”

mentioning

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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“…The loss of rhamnolipid due to adsorption by PAC was also evaluated in this study and it showed that the rhamnolipid loss was about 12% and 17% at PAC amounts of 5 and 10 g/L, respectively, indicating that the recovery of rhamnolipid is as high as over 80% after treatment of the rhamnolipid effluent. Some other innovative and sound technology, such as air stripping (including related technologies such as vacuum stripping) (Cheng, Zeng, et al, ; Kungsanant, Kitiyanan, Rirksomboon, Osuwan, & Scamehorn, ) and oxidation (e.g., Fenton oxidation and electrochemical oxidation) treatment (Mousset et al, ; Rosas, Vicente, Santos, & Romero, ; Trellu et al, , ), have been widely used to treat chemical surfactant (Tween 80 and SDS) effluent for pollutants degradation and surfactant recovery, however, has yet not been reported to treat rhamnolipid effluent. Further studies are needed in this area in order to verify the feasibility of the current technologies and develop new economically feasible technologies.…”

Section: Remediation Of Organic Contaminationmentioning

confidence: 99%

Advances in applications of rhamnolipids biosurfactant in environmental remediation: A review

Liu

Zhong

Yang³

et al. 2018

Biotech & Bioengineering

172

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The objective of this review is to provide a comprehensive overview of the advances in the applications of rhamnolipids biosurfactants in soil and ground water remediation for removal of petroleum hydrocarbon and heavy metal contaminants. The properties of rhamnolipids associated with the contaminant removal, that is, solubilization, emulsification, dispersion, foaming, wetting, complexation, and the ability to modify bacterial cell surface properties, were reviewed in the first place. Then current remediation technologies with integration of rhamnolipid were summarized, and the effects and mechanisms for rhamnolipid to facilitate contaminant removal for these technologies were discussed. Finally rhamnolipid-based methods for remediation of the sites co-contaminated by petroleum hydrocarbons and heavy metals were presented and discussed. The review is expected to enhance our understanding on environmental aspects of rhamnolipid and provide some important information to guide the extending use of this fascinating chemical in remediation applications.

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Anodic oxidation of surfactants and organic compounds entrapped in micelles – Selective degradation mechanisms and soil washing solution reuse

Cited by 85 publications

References 46 publications

Anodic Oxidation of Chlorinated Pesticides on BDD and PbO2 Electrodes: Kinetics, Influential Factors and Mechanism Determination

Anodic Oxidation of Chlorinated Pesticides on BDD and PbO2 Electrodes: Kinetics, Influential Factors and Mechanism Determination

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

Advances in applications of rhamnolipids biosurfactant in environmental remediation: A review

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