Electrochemical degradation of polycyclic aromatic hydrocarbons in creosote solution using ruthenium oxide on titanium expanded mesh anode

Tran, Lan Huong; Drogui, Patrick; Mercier, Guy; Blais, Jean‐François

doi:10.1016/j.jhazmat.2008.09.012

Cited by 94 publications

(36 citation statements)

References 37 publications

(45 reference statements)

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“…Glyphosate must be moved to the electrode surface (anode) and then be oxidized there. As the glyphosate concentration was lowered to a certain level, only a fraction of current intensity supplied was used to oxidize pollutants, while the remaining charge loading was wasted for generation of oxygen [20]. It was the reason for which the efficiency of glyphosate .5%, respectively.…”

Section: Effect Of the Current Intensitymentioning

confidence: 99%

“…It is well known that those generated species react favourably with electron-rich compounds [20]. In fact, hydroxyl radicals species break the bonds (-C-N-and -C-P-), which are the major component of glyphosate and its by-product leading to higher oxidation rates and possible mineralization of organic matter.…”

Section: Effect Of the Current Intensitymentioning

confidence: 99%

“…It has been established that the treatment efficiency is greatly affected by the operating conditions such as the reaction time and the cost of the electrochemical process [20,21]. In order to reduce the energy consumption and further optimize the process, additional experiments were conducted by testing various retention times.…”

Section: Effect Of Treatment Timementioning

confidence: 99%

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Electrochemical degradation and mineralization of glyphosate herbicide

Tran

Drogui

Doan

et al. 2017

Environmental Technology

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The presence of herbicide is a concern for both human and ecological health. Glyphosate is occasionally detected as water contaminants in agriculture areas where the herbicide is used extensively. The removal of glyphosate in synthetic solution using advanced oxidation process is a possible approach for remediation of contaminated waters. The ability of electrochemical oxidation for the degradation and mineralization of glyphosate herbicide was investigated using Ti/PbO2 anode. The current intensity, treatment time, initial concentration and pH of solution are the influent parameters on the degradation efficiency. An experimental design methodology was applied to determine the optimal condition (in terms of cost/effectiveness) based on response surface methodology. Glyphosate concentration (C0 = 16.9 mgwhen the optimal conditions were imposed (current intensity of 4.77A and treatment time of 173 min). The removal efficiencies of glyphosate and total organic carbon were 95 ±16 % and 90.31 %, respectively. This work demonstrates that electrochemical oxidation is a promising process for degradation and mineralization of glyphosate.

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Section: Effect Of the Current Intensitymentioning

confidence: 99%

Section: Effect Of the Current Intensitymentioning

confidence: 99%

Section: Effect Of Treatment Timementioning

confidence: 99%

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Electrochemical degradation and mineralization of glyphosate herbicide

Tran

Drogui

Doan

et al. 2017

Environmental Technology

Self Cite

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show abstract

“…It has been established that the treatment efficiency is greatly affected by the operating conditions such as the reaction time and the cost of the electrochemical process [6,7]. These tests were performed at a constant current intensity of 5A and various treatment times (5, 20, 30, 60, 120, 180 and 360 min).…”

Section: Effect Of Treatment Timementioning

confidence: 99%

Degradation of Glyphosate Herbicide by an Anodic Oxidation Process

Le¹

2018

JST

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Glyphosate is occasionally detected as water contaminants in agriculture areas where the herbicide is used extensively. The removal of glyphosate in synthetic solution using advanced oxidation process (AOP) is a possible approach for remediation of contaminated waters. Here, the ability of anodic oxidation for the degradation and mineralisation of glyphosate herbicide was investigated using Ti/PbO 2 anode in batch mode. The experimental results provided that the current intensity, treatment time, pH and initial concentration are the influent parameters on the glyphosate degradation. At the optimal condition, 16.9 mgL −1 of glyphosate decreased up to 0.6 mg L −1 , i.e the removal efficiencies were 95 ± 16 %. This work demonstrates that electrochemical oxidation is a promising process for degradation and mineralization of glyphosate.

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“…The release of Fe minerals followed by an enhanced release of DOC can thus be important factors in the PAH leaching under strong acidic conditions. The leaching and degradation of PAHs in soils from contaminated sites may be improved by addition of a strong oxidant to achieve a Fenton-like oxidation [41], electrochemical degradation [42] or by a combination of the two techniques [43]. The addition of a strong oxidant could also affect the Cu leachability, which is something that should be studied further if this technique is used to remove PAHs.…”

Section: Figurementioning

confidence: 99%

Copper Recovery from Polluted Soils Using Acidic Washing and Bioelectrochemical Systems

Fedje

Modin

Strömvall

2015

Metals

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Abstract:Excavation followed by landfilling is the most common method for treating soils contaminated by metals. However, as this solution is not sustainable, alternative techniques are required. Chemical soil washing is one such alternative. The aim of this experimental lab-scale study is to develop a remediation and metal recovery method for Cu contaminated sites. The method is based on the washing of soil or ash (combusted soil/bark) with acidic waste liquids followed by electrolytic Cu recovery by means of bioelectrochemical systems (BES). The results demonstrate that a one-or two-step acidic leaching process followed by water washing removes >80 wt. % of the Cu. Copper with 99.7-99.9 wt. % purity was recovered from the acidic leachates using BES. In all experiments, electrical power was generated during the reduction of Cu. This clearly indicates that Cu can also be recovered from dilute solutions. Additionally, the method has the potential to wash co-pollutants such as polycyclic aromatic hydrocarbons (PAHs) and oxy-PAHs.

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Electrochemical degradation of polycyclic aromatic hydrocarbons in creosote solution using ruthenium oxide on titanium expanded mesh anode

Cited by 94 publications

References 37 publications

Electrochemical degradation and mineralization of glyphosate herbicide

Electrochemical degradation and mineralization of glyphosate herbicide

Degradation of Glyphosate Herbicide by an Anodic Oxidation Process

Copper Recovery from Polluted Soils Using Acidic Washing and Bioelectrochemical Systems

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