Application of Electrocoagulation In Various Wastewater And Leachate Treatment-A Review

Zailani, L W M; Zin, Nur Shaylinda Mohd

doi:10.1088/1755-1315/140/1/012052

Cited by 21 publications

(11 citation statements)

References 26 publications

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“…Sanitary landfill leachates are among the effluents that may pose major environmental concerns worldwide and, in particular, the leachate concentrates that result from the leachates treatment by membrane processes [10,11]. These effluents, characterized by a complex composition that includes different heavy metals, organic and inorganic compounds, some of them refractory and toxic, are very difficult to depurate, and several studies have focused on their treatment by electrochemical processes [10,11,12,13,14,15,16,17,18,19].…”

Section: Introductionmentioning

confidence: 99%

“…Electrocoagulation has demonstrated to be an effective and practical technology to treat leachates from sanitary landfills, since it allows the treatment of effluents containing dissolved and non-dissolved pollutants without chemicals addition [21,22,23]. There are several process variables that can influence the EC treatment efficiency [7,18,21,24]. According to the literature, EC efficacy is generally enhanced when operated at neutral pH conditions and without mechanical stirring [7,25].…”

Section: Introductionmentioning

confidence: 99%

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Performance of Electrochemical Processes in the Treatment of Reverse Osmosis Concentrates of Sanitary Landfill Leachate

Fernandes

Chamem²,

Ciríaco

et al. 2019

Molecules

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Electrochemical technologies have been broadly applied in wastewaters treatment, but few studies have focused on comparing the performance of the different electrochemical processes, especially when used to treat highly-polluted streams. The electrochemical treatment of a reverse osmosis concentrate of sanitary landfill leachate was performed by means of electrocoagulation (EC), anodic oxidation (AO) and electro-Fenton (EF) processes, and the use of different electrode materials and experimental conditions was assessed. All the studied processes and experimental conditions were effective in organic load removal. The results obtained showed that EC, with stainless steel electrodes, is the cheapest process, although it presents the disadvantage of sludge formation with high iron content. At high applied current intensity, AO presents the best treatment time/energy consumption ratio, especially if the samples’ initial pH is corrected to 3. However, pH correction from natural to 3 deeply decreases nitrogen-containing compounds’ removal. For longer treatment time, the EF process with a carbon-felt cathode and a BDD anode, performed at natural iron content and low applied current intensity, is the most favorable solution.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance of Electrochemical Processes in the Treatment of Reverse Osmosis Concentrates of Sanitary Landfill Leachate

Fernandes

Chamem²,

Ciríaco

et al. 2019

Molecules

View full text Add to dashboard Cite

show abstract

“…The treatment of wastewater generated from different sources is essential for the safety of an environment that is either directly or indirectly related to an environment (Brahmi and Bouguerra 2015). But to eradicate those problems, there are different types of wastewater treatment methods which include a physical, biological, and chemical process based on the different situations of wastewater (Dalvand et al 2011;Asaithambi 2016;Manilal et al 2017;Zailani and Zin 2018;Kumar and Sharma 2019).…”

Section: Introductionmentioning

confidence: 99%

Investigation on operating parameters and cost using an electrocoagulation process for wastewater treatment

2021

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Wastewater generated from different sources affects the health of living organisms and the natural environment due to the availability of different pollutants. Electrocoagulation (EC) is a good technology implemented for wastewater treatment before discharging to an environment as effluents. The electrocoagulation process is an effective method to the remove the color, chemical oxygen demand (COD), turbidity, and consumption of less energy from wastewater by considering different operating parameters. In this study, the major operating parameters for the electrocoagulation process such as pH (3–7.50), electric current (0.03–0.09 A), electrolytic concentration (1–3 g/L), the distance between electrodes (1–2 cm), electrolysis time (20–60 min) and combination of electrodes (Fe–Fe and Al–Al) were studied. The maximum removal of color–94.40%, COD–97.02%, and turbidity–90.91% with required energy consumption –36kWhr/m3 was obtained at the electric current–0.09 A, electrolyte concentration–3 g/L, pH–7, electrode combination–Fe–Fe, and distance between electrodes–3 cm, respectively. The studied parameters were affected the removal % color, % COD, % turbidity, and also the consumption of energy depending on the desired setup of fixed values of the parameter. Consumption of energy and electrode dissolution is related to the cost of operating in electrocoagulation in addition to the cost of labor and the small amount of sludge produced for disposal.

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“…It has found application in many different industries, including the cleaning and neutralization of oil emulsions used in machining and abrasive handling, wastewater from the textile industry, wastewater from agro-food processing businesses, wastewater from car washes, heavy metals, and other pollutants such as coke oven wastewater [ 32 , 33 , 34 , 35 ]. Electrocoagulation is a technology based on the interaction between many electrochemistry, coagulation, and flotation processes [ 36 , 37 ]. Thermodynamic modeling of solution chemistry concerning hydrolyzed metal cations, which connects subjects of electrochemistry and coagulation, is a complex engineering task [ 38 , 39 , 40 ].…”

Section: Introductionmentioning

confidence: 99%

Concept of Flocks Fragmentation and Averaging Method for the Application of Electrocoagulation in Process for Coke Oven Wastewater Treatment

et al. 2021

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The main objective of the article is to develop the concept of flock fragmentation and the averaging method for the application of electrocoagulation in the process of treating wastewater from coke ovens. The designed solution was part of an innovative system for the coke oven wastewater treatment process. The system is dedicated to removing the hazardous elements and compounds from wastewater from leaching ashes in municipal waste incineration plants. The design of the process and its automatization was based on a quantitative simulation method. The balance equations of mass, energy, and momentum of transport, complemented by the kinetics of the related reaction, are used during the calculation of the process. The main result achieved is a practical solution—the reactor’s scheme, classified due to a patent procedure in the Polish Patent Office.

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Application of Electrocoagulation In Various Wastewater And Leachate Treatment-A Review

Cited by 21 publications

References 26 publications

Performance of Electrochemical Processes in the Treatment of Reverse Osmosis Concentrates of Sanitary Landfill Leachate

Performance of Electrochemical Processes in the Treatment of Reverse Osmosis Concentrates of Sanitary Landfill Leachate

Investigation on operating parameters and cost using an electrocoagulation process for wastewater treatment

Concept of Flocks Fragmentation and Averaging Method for the Application of Electrocoagulation in Process for Coke Oven Wastewater Treatment

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