Electrocoagulation process for the treatment of real textile wastewater: Effect of operative conditions on the organic carbon removal and kinetic study

Bener, Sırma; Bulca, Özlem; Palas, Burcu; Tekin, Gülen; Atalay, Süheyda; Ersöz, Gülin

doi:10.1016/j.psep.2019.06.010

Cited by 201 publications

(73 citation statements)

References 40 publications

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“…Increasing the applied current increases, the production of metal ions which generate amorphous flocs (Al(OH)3). This enhances the agglomeration of organic and inorganic matters, which leads to the increase in TOC removal efficiency (Bener et al 2019;Kobya and Delipinar 2008). It can be also noticed from Fig.…”

Section: Resultsmentioning

confidence: 73%

“…Thus, the removal efficiency decreases with increasing the interelectrode distance (Anand et al 2014). The TOC removal efficiency of 87.7% obtained at the selected running conditions by the AC-DEP module is one of the highest TOC removal efficiencies when compared to previous studies that targeted the removal of TOC using electrocoagulation (Bektaş et al 2004;Bener et al 2019;Kobya and Delipinar 2008;Kobya and Demirbas 2015;Kobya et al 2014). Table 2 summarizes the quality of the wastewater using the most suitable running conditions.…”

Section: Resultsmentioning

confidence: 89%

“…Applying a current density of 1.875 mA/cm 2 , 98% of dye was removed after 60 min of electrolysis time (Aoudj et al 2010). Bener et al (2019) used EC for the treatment of real textile water with a DC power supply system using four aluminum and iron sheets. Applying a current density of 25 mA/cm 2 , 42.5, 18.6, 83.5, 64.7, and 90.3-94.9% of TOC, COD, turbidity, TSS, and color removal efficiencies were obtained (Bener et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Bener et al (2019) used EC for the treatment of real textile water with a DC power supply system using four aluminum and iron sheets. Applying a current density of 25 mA/cm 2 , 42.5, 18.6, 83.5, 64.7, and 90.3-94.9% of TOC, COD, turbidity, TSS, and color removal efficiencies were obtained (Bener et al 2019). Kobya and Demirbas (2015) used EC for the treatment of can manufacturing wastewater using four aluminum sheets in a monopolar parallel mode.…”

Section: Introductionmentioning

confidence: 99%

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A novel electrocoagulation electrode configuration for the removal of total organic carbon from primary treated municipal wastewater

Hawari

Alkhatib

Hafiz

et al. 2020

Environ Sci Pollut Res

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In this paper, the removal of total organic carbon (TOC) from a primary treated municipal wastewater using a new electrode configuration in electrocoagulation was evaluated. The used electrode configuration induces a dielectrophoretic (DEP) force by using an asymmetrical aluminum electrode with an alternating current power supply. The impact of applied current, electrolysis time, and interelectrode distance on the removal efficiency of TOC were evaluated. The experimental results showed that the maximum removal efficiency of TOC was obtained at 30 min electrolysis time, 600 mA applied current, and 0.5 cm interelectrode distance. Under these operating conditions, the TOC removal was 87.7% compared to 80.5% using symmetrical aluminum electrodes with no DEP effect. The energy consumption at the selected operating conditions was 3.92 kWh/m 3. The experimental results were comparable with the simulation results done by COMSOL Multiphysics software.

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Section: Resultsmentioning

confidence: 73%

Section: Resultsmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A novel electrocoagulation electrode configuration for the removal of total organic carbon from primary treated municipal wastewater

Hawari

Alkhatib

Hafiz

et al. 2020

Environ Sci Pollut Res

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show abstract

“…In a previous article 15 , the efficiency of electrocoagulation/electroflotation in removing colour from real textile wastewater by using aluminum and iron electrodes have been studied in a pilot external-loop airlift reactor. Other studies have also proved that Al electrodes were more effective than Fe electrodes in TOC removal 16 . Bipolar mode of electrodes has been used to treat laundry wastewater by electrocoagulationelectroflotation 17 , but sacrificial anodes were only made by aluminum.…”

Section: Introductionmentioning

confidence: 91%

The simultaneous removal of reactive and disperse dyes by Electrocoagulation Process with a bipolar connection of combined Iron and Aluminum electrodes: Experimental design and Kinetic studies

2020

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This study concerns the ability of electrocoagulation process to remove simultaneously disperse and reactive dyes by using combined iron and aluminum electrodes in bipolar mode. A statistical experiment design (Response Surface Methodology: RSM) was adopted to model the process and to optimize the parameters influencing the removal efficiency of the dyes. The mathematical model is established, using a rotatable central composite design uniform to study the empirical relationships between two responses (Removal efficiency, energy consumption) and five factors: initial pH, current density, the concentration of supporting electrolyte, time and stirring speed. This treatment, therefore, led to a removal efficiency that can reach more than 95% with low consumption energy of 9 kWh/Kg of removed dye. Kinetic, isotherm adsorption and thermodynamic studies were undertaken with the optimized parameters. Electrocoagulation mechanism was modeled using adsorption kinetics and isotherm models, it is sited were on the insoluble iron and aluminum flocs. This study shows that the Freundlich model fit the adsorption isotherm, the kinetic of the electrocoagulation is better presented by the pseudo- second-order kinetic, the adsorption is endothermic and spontaneous for both dyes. Analysis of the sludge allowed quantifying the role of each electrode in removing dyes.

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Mechanism and Techno‐Economic Analysis of the Electrochemical Process

Ranga

Sinha

2023

ChemBioEng Reviews

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The textile industry utilizes numerous chemicals ranging from solvents to resins and caustic soda to bleach, having a harsh environmental impact. A large amount of colored dye in wastewater is released. Non-biodegradable heavy metals and chlorine accumulate in organs of marine and terrestrial life, leading to various diseases. So, there is an urgent need to treat textile wastewater. Up to date, techno-economic analyses of all electrochemical processes have not been reviewed for textile wastewater treatment. In this review, the focus is on the tertiary treatment methods, mainly on electrochemical treatments, i.e., electrocoagulation, electro-Fenton, electrooxidation, photoelectrochemical (PEC) process, and solar electrophoto-Fenton process (SPEF) with their mechanisms and techno-economic analyses. SPEF treatment was found to be advantageous in terms of efficiency and economic perspective as it utilizes solar energy instead of electrical energy and the cost of the PEC process can also be recovered by the generation of hydrogen.

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Electrocoagulation process for the treatment of real textile wastewater: Effect of operative conditions on the organic carbon removal and kinetic study

Cited by 201 publications

References 40 publications

A novel electrocoagulation electrode configuration for the removal of total organic carbon from primary treated municipal wastewater

A novel electrocoagulation electrode configuration for the removal of total organic carbon from primary treated municipal wastewater

The simultaneous removal of reactive and disperse dyes by Electrocoagulation Process with a bipolar connection of combined Iron and Aluminum electrodes: Experimental design and Kinetic studies

Mechanism and Techno‐Economic Analysis of the Electrochemical Process

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