Primary potential and current density distribution analysis: A first approach for designing electrocoagulation reactors

Vázquez, Armando; Rodríguez, Israel; Lázaro, Isabel

doi:10.1016/j.cej.2011.10.078

Cited by 43 publications

(23 citation statements)

References 19 publications

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“…: coagulation, flocculation, precipitation, electroflotation, etc.). These effects impact the flocs formation and their precipitation [93], avoiding the formation of aggregates because the high electrostatic effect hinders the particles collision [94]. In contrast, an excessive distance between electrodes decreases significantly the formation of flocs [95,96].…”

Section: Inter-electrode Gap Distancementioning

confidence: 99%

Electrocoagulation and advanced electrocoagulation processes: A general review about the fundamentals, emerging applications and its association with other technologies

Garcia‐Segura

Eiband

Melo

et al. 2017

Journal of Electroanalytical Chemistry

552

213

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The electrocoagulation (EC) process is an electrochemical means of introducing coagulants and removing suspended solids, colloidal material, and metals, as well as other dissolved solids from water and wastewaters. EC process has been successfully employed in removing pollutants, pesticides, and radionuclides. This process also removes harmful microorganisms. More often during EC operation, direct current is applied and electrode plates are sacrificed (dissolved into solution). The electrodissolution causes an increased metal concentration in the solution that finally precipitates as oxides and hydroxides. Due to the process design and low cost material, the EC process is widely accepted over other physicochemical processes. In this frame, this paper presents a general review of efficient EC technologies developed to remove organic and inorganic matter from wastewaters for environmental protection. Fundamentals and main applications of EC as well as progress of emerging EC treatments are reported. The influence of iron or aluminum anode on depollution of synthetic or real effluents is explained. The advantages of EC mechanisms with Al and Fe electrodes are extensively discussed. There are presented the advanced EC processes with in situ generation of hydroxyl radical. The importance of the operating parameters for efficient application of the EC process as well as the combination of this electrochemical technology with electroanalysis techniques and other technologies are commented.

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Section: Inter-electrode Gap Distancementioning

confidence: 99%

Electrocoagulation and advanced electrocoagulation processes: A general review about the fundamentals, emerging applications and its association with other technologies

Garcia‐Segura

Eiband

Melo

et al. 2017

Journal of Electroanalytical Chemistry

552

213

View full text Add to dashboard Cite

show abstract

“…Solak et al [27] evaluated the monopolar-parallel and monopolar-serial connections using both aluminum and iron electrodes during the treatment of marble processing wastewater, but they focused much more on the electrode material. Recently, Vázquez et al [28] studied the impact of primary potential and current density distribution on electrocoagulation. They showed that the non-distribution of current density impacts coagulant formation and thus the efficiency of electrocoagulation treatment.…”

Section: Influence Of Electrical Connectionsmentioning

confidence: 99%

“…The benefits of the design of an electrode connection remains to be confirmed and validated in the case of complex industrial wastewater, since the few papers dealing with this aspect focus on the low concentration of fluoride [29], arsenic [30], and phosphate (this paper). The real operating cost includes electrodes, electrical energy cost, as well as labor, maintenance, sludge dewatering and disposal, and fixed costs [28]. Electrodes and electrical energy costs are specific to the electrocoagulation methods and as they are the major cost items, a preliminary economic investigation can be done using the following relation [28]:…”

Section: Estimation Of Energy Consumption and Operation Costmentioning

confidence: 99%

“…The real operating cost includes electrodes, electrical energy cost, as well as labor, maintenance, sludge dewatering and disposal, and fixed costs [28]. Electrodes and electrical energy costs are specific to the electrocoagulation methods and as they are the major cost items, a preliminary economic investigation can be done using the following relation [28]:…”

Section: Estimation Of Energy Consumption and Operation Costmentioning

confidence: 99%

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Intensification of phosphate removal using electrocoagulation treatment by continuous pH adjustment and optimal electrode connection mode

Attour

Grich

Tlili

et al. 2015

Desalination and Water Treatment

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International audienceThis paper discusses two possible ways of intensifying the electrocoagulation treatment of water contg. phosphate. The first one consists of controlling the chem. compn. of the water by continuous adjustment of the pH. The second aspect focuses on electrode connection modes, and the four different modes were tested monopolar in series, in parallels and independents, and finally bipolar. Expts. were conducted in a small batch reactor contg. water with 100 mg P/L using electrodes of aluminum. Several elec. connections were used for the water treatment under favorable operating conditions detd. by a study and presented in a previous paper. The influence of pH adjustment was conducted using different adjustment step times (no adjustment, every 30, 10 and 5 min). The kinetics of the treatment was found to be accelerated by continuous adjustment of the pH. The choice of the electrode connection modes was found to strongly affect the efficiency of the treatment, the Faradic yield, and the consumption of energy. The monopolar in parallels connection mode was found to be the most economic, whereas bipolar in parallels was found to favor a higher kinetic rate of treatment

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“…There are several approaches for scaling up production, i.e., enlarging the size and number of electrodes, increasing current density or increasing synthesis time. In this paper, we use a combination of all of these approaches by employing a parallel electrode flow cell inspired by designs used for waste water electrocoagulation treatment due to the similarities shared by both of these processes 16,17 .…”

Section: Introductionmentioning

confidence: 99%

Design, Construction and Evaluation of a 3D Printed Electrochemical Flow Cell for the Synthesis of Magnetite Nanoparticles

Lozano

López

Menéndez

et al. 2018

J. Electrochem. Soc.

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A 3D-printed prototype of an electrochemical flow cell for the synthesis of superparamagnetic magnetite nanoparticles of medium size between 15 and 30 nm was constructed and its performance was evaluated. The cell consists of a series of rectangular channels in a parallel electrode arrangement. Electrolyte flows through the channels as the mL standard cell previously used. Magnetic saturation was 77.3 emu g-1 , slightly lower than the bulk material (92-100 emu g-1).

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Primary potential and current density distribution analysis: A first approach for designing electrocoagulation reactors

Cited by 43 publications

References 19 publications

Electrocoagulation and advanced electrocoagulation processes: A general review about the fundamentals, emerging applications and its association with other technologies

Electrocoagulation and advanced electrocoagulation processes: A general review about the fundamentals, emerging applications and its association with other technologies

Intensification of phosphate removal using electrocoagulation treatment by continuous pH adjustment and optimal electrode connection mode

Design, Construction and Evaluation of a 3D Printed Electrochemical Flow Cell for the Synthesis of Magnetite Nanoparticles

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