Electrochemical peroxidation of contaminated aqueous leachate

Paton, Ian K.; Lemon, Mark; Freeman, Ben; Newman, Jeffrey D.

doi:10.1007/s10800-009-9935-x

Cited by 9 publications

(6 citation statements)

References 13 publications

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“…Paton et al [104] investigated the feasibility of using ECP for the treatment of land fill leachate gener- ated from Stewartby landfill (Bedfordshire, UK). The optimization of the process was conducted by varying electrode voltage, polarity switching rate, initial pH, and hydrogen peroxide concentration.…”

Section: Electrochemical Peroxidationmentioning

confidence: 99%

“…The optimization of the process was conducted by varying electrode voltage, polarity switching rate, initial pH, and hydrogen peroxide concentration. This resulted in an observed 36% BOD 5 and 52% COD reduction by adjusting the pH to 4.0, applying an electrode voltage of 1.9V and switching speed of 5 cycles per minute [104]. Paton et al [104] concluded that ECP process is effective in the treatment of landfill leachate, and suggested that with further optimization, ECP may serve as an attractive option to current biological leachate treatment methods.…”

Section: Electrochemical Peroxidationmentioning

confidence: 99%

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An overview of electro-oxidation processes performance in stabilized landfill leachate treatment

Bashir

Aziz

et al. 2013

Desalination and Water Treatment

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A B S T R A C TAmong numerous techniques, electro-oxidation occupies a noticeable place in landfill leachate treatment. In recent years, electro-oxidation processes have been shown to be effective alternative for the removal of refractory organic compounds from stabilized landfill leachate. This paper aims to provide an overview about the effectiveness and mechanism of electro-oxidation processes employed for stabilized landfill leachate treatment. A review of the recent literature published on the electro-oxidation processes (i.e. electrochemical, electroFenton, photoelectro-Fenton, photoelectrochemical, and electrochemical peroxidation) performance and efficiency in stabilized leachate treatment are summarized and presented in this study. This study concluded that, although the high treatment cost caused by the energy consumption may limit electro-oxidation techniques, electro-oxidation processes are still a promising and effectual technology for the reduction of pollutants in stabilized landfill leachate.

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Section: Electrochemical Peroxidationmentioning

confidence: 99%

Section: Electrochemical Peroxidationmentioning

confidence: 99%

An overview of electro-oxidation processes performance in stabilized landfill leachate treatment

Bashir

Aziz

et al. 2013

Desalination and Water Treatment

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“…Some researchers have investigated the treatment efficiency of electrochemical oxidation in treating landfill leachate [59][60][61][62][63]. The pollutant removal efficiency was influenced by a number of operating factors, including anode materials, pH, current density, Cl − concentration, and electrolytes added (Table 5).…”

Section: Electrochemical Oxidation Processesmentioning

confidence: 99%

Removal of Organic Matter from Landfill Leachate by Advanced Oxidation Processes: A Review

Zhou

Hua

2010

International Journal of Chemical Engineering

130

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In most countries, sanitary landfill is nowadays the most common way to eliminate municipal solid wastes (MSWs). However, sanitary landfill generates large quantity of heavily polluted leachate, which can induce ecological risk and potential hazards towards public health and ecosystems. The application of advanced oxidation processes (AOPs) including ozone-based oxidation, Fenton oxidation, electrochemical oxidation, and other AOPs to treatment of landfill leachate was reviewed. The treatment efficiency in term of chemical oxygen demand (COD) of various AOPs was presented. Advantages and drawbacks of various AOPs were discussed. Among the AOPs reviewed, Fenton process should be the best choice, not only because it can achieve about 49∼89% of COD removal with COD ranging from 837 to 8894 mg/L, but also because the process is cost-effective and simple in technological aspect, there is no mass transfer limitation (homogeneous nature) and both iron and hydrogen peroxide are nontoxic.

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“…Operating Cost m Energy cost product cost $ / 3 (19) where m i is the mass of chemicals needed, electrode, kg/ m 3 and p i is price in $/kg. Utilizing this condition, the electro-chemical peroxidation process operating cost was 0.4$/ m 3 at optimum conditions [46].…”

Section: Economic Analysis and Electrical Energy Consumption (Eec)mentioning

confidence: 99%

“…ECP is a proprietary process that utilizes sacrificial iron electrodes and stoichiometrically balanced applications of hydrogen peroxide to efficiently destroy aqueous phase contaminants. ECP involves the oxidation of organic matter by the action of hydroxyl radical produced from hydrogen peroxide and ferrous iron followed by Coagulation [19]. The applied DC current between them dissolves the anode and provide Fe 2+ ions that react with the hydrogen peroxide to produce Fe 3+ ions.…”

Section: Introductionmentioning

confidence: 99%

Removal of chromium (III) from tannery wastewater by electrochemical peroxidation process in a bench scale reactor

Selvabharathi¹,

Adishkumar²,

Banu³

2019

DWT

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Chromium(III) used in tanning process is not consumed fully and around 30-40% of Chromium(III) is washed away to the environment causing severe environmental problem especially to the aquatic system. To remove Chromium(III) from wastewater, many different treatment techniques have been developed. This study deals with the ability of electrochemical peroxidation process for the removal of Chromium(III) from tannery wastewater in a batch stirred tank bench scale reactor with hopper bottom of 5 L working volume equipped with two iron electrodes which were investigated. The removal percentage of chromium was determined by varying operating parameters such as pH = 2-8, Fe 2+ = 2-5 mg/L, H 2 O 2 = 5-20 mg/L and current density = 10-40 mA/cm 2 were studied. The results showed that the Chromium(III) removal efficiency of 87% was achieved under optimum condition such as pH = 2, Fe 2+ = 2 mg/L H 2 O 2 = 15 mg/L, current density = 30 mA/cm 2 and contact time was 120 min with an electrical energy consumption of 0.073 kWh/L. The operating costs for the removal of Chromium(III) was found to be 0.4 $/m 3 for treated tannery wastewater. The electrochemical peroxidation process proved to be an efficient and appropriate technique for the removal of Chromium(III) from tannery wastewater.

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Electrochemical peroxidation of contaminated aqueous leachate

Cited by 9 publications

References 13 publications

An overview of electro-oxidation processes performance in stabilized landfill leachate treatment

An overview of electro-oxidation processes performance in stabilized landfill leachate treatment

Removal of Organic Matter from Landfill Leachate by Advanced Oxidation Processes: A Review

Removal of chromium (III) from tannery wastewater by electrochemical peroxidation process in a bench scale reactor

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