Electrochemical treatment of drainage water from toxic dump of pesticides and degradation products

Muff, Jens; Andersen, Christian D.; Erichsen, Rasmus; Soegaard, Erik Gydesen

doi:10.1016/j.electacta.2008.09.032

Cited by 18 publications

(8 citation statements)

References 19 publications

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“…These abiotic reactions in conventional electrochemical processes can achieve oxidation (at the anode) and/or the reduction (at the cathode) of a wide variety of recalcitrant wastes including landfill leachate, dyes and pesticides. 5,10,17,35 Cell configuration and operating conditions such as applied current, pH value, temperature, electrolyte concentration, type of electrolyte, stir rate and anoxic conditions strongly affect the overall treatment efficiency. 10 -13 While important results have been obtained in laboratory scale tests, a practical large-scale implementation of electrochemical treatment of recalcitrant wastes has not been realized, mainly due to the high operating cost and the non-stable electrodes.…”

Section: Bess For Recalcitrant Wastes Treatment Electrochemical Procementioning

confidence: 99%

Bioelectrochemical systems for efficient recalcitrant wastes treatment

Huang

Cheng

Chen

2010

J of Chemical Tech & Biotech

138

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Recalcitrant wastes including dyes, pesticides, explosives, heavy metals, polyalcohols, furan derivatives and phenolic substances, are of special concern owing to their recalcitrance and persistence in the environment. Bioelectrochemical systems (BESs) including microbial fuel cells (MFCs) and microbial electrolysis cells (MECs), integrate three important wastewater treatment options, namely, biological treatment, electrolytic dissociation and electrochemical oxidation/reduction, and are regarded as a new sustainable and effective strategy for treatment of these wastes. The simultaneous and cooperative roles of these multiple units running in parallel in BESs contribute to the efficiency of recalcitrant waste treatment, while substrate metabolism is considered to be a key step triggering different unit operations. An up-to-date review is provided on recent research and development in BESs-based recalcitrant wastes treatment. MFCs and MECs, as two types of BESs, are summarized in terms of treatment efficiency, recalcitrant substance metabolic pathway and microorganism diversity after a brief introduction to the electrochemical process for recalcitrant waste treatment. The scientific and technical challenges that have yet to be faced in the future are also discussed.

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Section: Bess For Recalcitrant Wastes Treatment Electrochemical Procementioning

confidence: 99%

Bioelectrochemical systems for efficient recalcitrant wastes treatment

Huang

Cheng

Chen

2010

J of Chemical Tech & Biotech

138

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“…The versatility of the electrochemical oxidation process in degradation of a wide range of organic pollutants is clearly shown in the comprehensive review by Martinez-Huitle & Ferro (2006) and the more recent review by Martinez-Huitle & Brillas (2008) concerning electrochemical degradation of organic dyes. In addition, a prior study on highly polluted ground water containing a range of organophosphoric pesticides showed the efficiency of the electrochemical oxidation technique in the treatment of very complex contaminated matrices (Muff et al 2009). …”

Section: Introductionmentioning

confidence: 98%

Electrochemical degradation of PAH compounds in process water: a kinetic study on model solutions and a proof of concept study on runoff water from harbour sediment purification

Muff

Søgaard

2010

Water Science and Technology

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The present study has investigated the possibility to apply electrochemical oxidation in the treatment of polycyclic aromatic hydrocarbon (PAHs) pollutants in water. The reaction kinetics of naphthalene, fluoranthene, and pyrene oxidation have been studied in a batch recirculation experimental setup applying a commercial one-compartment cell of tubular design with Ti/Pt(90)-Ir(10) anode. The rate of oxidation has been evaluated upon variations in current density, electrolyte composition and concentration. All three PAHs were degraded by direct anodic oxidation in 0.10 M Na(2)SO(4) electrolyte, and the removal rates were significantly enhanced by a factor of two to six in 0.10 M NaCl due to contribution from the indirect hypochlorite oxidation. Second order reaction kinetics was observed for the degradation of naphthalene in all electrolytes whereas fluoranthene and pyrene followed first order kinetics. Decreased current densities from 200 to 15 mA cm(-2) in the NaCl electrolyte also decreased the removal rates, but significantly enhanced the current efficiencies of the PAH oxidation, based on a defined current efficiency constant, k(q). This observation is believed to be due to the suppression of the water oxidation side reaction at lower applied voltages. A proof of concept study in real polluted water demonstrated the applicability of the electrochemical oxidation technique for larger scale use, where especially the indirect chloride mediated oxidation approach was a promising technique. However, the risk and extent of by-product formation needs to be studied in greater detail.

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“…The research efforts devoted to the development of environmental applications of electrochemical technologies has notably increased within the last decades Feng et al, 2016). For the particular case of pesticide removal, many studies have been conducted in the recent years, looking for operation conditions or combination of processes that helps to attain high degradation efficiencies (Muff et al, 2009;Fontmorin et al, 2012;Kukurina et al, 2014;Souza et al, 2016) in the depletion of these hazardous species.…”

Section: Introductionmentioning

confidence: 99%

Novel integrated electrodialysis/electro-oxidation process for the efficient degradation of 2,4-dichlorophenoxyacetic acid

et al. 2017

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This work presents a novel approach of wastewater treatment technology that consists of a combined electrodialysis/electro-oxidation process, specially designed to allow increasing the efficiency in the oxidation of ionic organic pollutants contained in diluted waste. Respect to conventional electrolysis, the pollutant is simultaneously concentrated and oxidized, enhancing the performance of the cell due to the higher concentration achieved in the nearness of the anode. A proof of concept is tested with the ionic pesticide 2,4-D (2,4-dichlorophenoxyacetic acid) and results show that the efficiency of this new technology overcomes that electrolysis by more than double, regardless the supporting electrolyte used (either NaCl or NaSO). Moreover, the removal rate of 2,4-D when using NaCl was found to be more efficient, due to the best performance of the electrode material selected (DSA) towards the formation of oxidants in chloride supporting electrolyte. These results open the way for overcoming the efficiency limitations of electrochemical treatment processes for the treatment of solutions with low concentrated ionic pollutants.

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Electrochemical treatment of drainage water from toxic dump of pesticides and degradation products

Cited by 18 publications

References 19 publications

Bioelectrochemical systems for efficient recalcitrant wastes treatment

Bioelectrochemical systems for efficient recalcitrant wastes treatment

Electrochemical degradation of PAH compounds in process water: a kinetic study on model solutions and a proof of concept study on runoff water from harbour sediment purification

Novel integrated electrodialysis/electro-oxidation process for the efficient degradation of 2,4-dichlorophenoxyacetic acid

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