Decolorization of levafix brilliant blue E‐B by electrocoagulation method

Akbal, Feryal; Kuleyin, Ayşe

doi:10.1002/ep.10437

Cited by 38 publications

(12 citation statements)

References 42 publications

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“…In EC process, coagulants are generated by dissolving aluminum (which yields Al 3+ ) or iron (which yields Fe 2+ ) from the anode. Simultaneously, hydroxyl ions and hydrogen gas are released from the cathode by the reduction of water molecules . The occurrence of electrochemical reactions leads to the production of various ferrous, ferric, and Al(III) hydroxide and polyhydroxide species depending on the pH of the aqueous medium .…”

Section: Introductionmentioning

confidence: 99%

Comparison of organic dyes removal mechanism in electrocoagulation process using iron and aluminum anodes

Amani‐Ghadim

Olad

Aber

et al. 2012

Env Prog and Sustain Energy

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The removal of Reactive red 43, as a model pollutant, and some organic dyes with different structures by electrocoagulation process was investigated using iron (EC‐Fe) and aluminum (EC‐Al) anodes to explain dyes removal mechanism differences in EC‐Fe and EC‐Al processes. First, the effects of current density, electrolysis time and pH on the removal of Reactive Red 43were studied. The maximum removal efficiency (RE) was obtained in relatively acidic medium (pH = 4.25) in the first 12 minutes of EC‐Al. While, in EC‐Fe, a significant lag time between the starting of the process and initiation of considerable dye removal was observed. The color RE was supplemented with determining the RE of chemical oxygen demand. The COD values were determined for decolorization of solution containing 50 mg/L of RR43 and after 24 min of processes when the applied current density to monopolar batch electrochemical reactor was 25 A/m2. The COD removal efficiencies for the mentioned conditions were 73.92% and 97.12% for EC‐Al and EC‐Fe processes, respectively. The kinetics studies were carried out for both EC‐Al and EC‐Fe processes. In the similar operational conditions, the removal of basic dyes was not considerable by EC‐Al. However, the RE of anionic dyes was improved with the addition of the number of sulfonate substituted groups. The maximum RE of all cationic and anionic dyes (RE > 90%) was achieved using EC‐Fe. The enmeshment of dyes on iron oxide/hydroxide precipitates and charge neutralization were the main removal mechanisms in EC‐Fe and EC‐Al processes, respectively. © 2012 American Institute of Chemical Engineers Environ Prog, 32: 547–556, 2013

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Section: Introductionmentioning

confidence: 99%

Comparison of organic dyes removal mechanism in electrocoagulation process using iron and aluminum anodes

Amani‐Ghadim

Olad

Aber

et al. 2012

Env Prog and Sustain Energy

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“…Therefore, a lot of researchers have focused on the efficiency of the system on different aqueous solutions in terms of various experimental conditions. Although many researches on treatment of synthetic or real wastewaters with EC are available, very few researches have been carried out on the economical applicability of EC in details .…”

Section: Introductionmentioning

confidence: 99%

Electrochemical treatment of colour index reactive orange 84 and textile wastewater by using stainless steel and iron electrodes

Yüksel

Eyvaz

Gürbulak

2011

Env Prog and Sustain Energy

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In this study, two case studies were carried out: Electrocoagulation (EC) of a reactive textile dye solution and a textile wastewater. Stainless steel (SS) and iron (Fe) electrodes were used as sacrificial electrodes in parallel connection modes. Effects of pH, current density, and operating time on performance of EC were investigated. Optimum parameters obtained from dye experiments were applied to treatment of the textile wastewater. According to the experimental results, SS electrodes were found to be superior compared with Fe electrodes for treatment of both the dye and the textile wastewater. By using SS electrodes, the textile wastewater was electrocoagulated successfully with 89.7% of COD, 91.2% of TOC, 90.3% of turbidity, and 94.1% of TSS removal efficiencies as well as 2.43 kWh/m3 of energy and 0.05 kg/m3 of electrode consumptions, 1.061 kg/m3 of sludge production, and 0.62 $/m3 of total operating cost. © 2011 American Institute of Chemical Engineers Environ Prog, 32: 60–68, 2013.

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“…The lighter contaminants are brought to the surface of the liquid by the generated gas bubbles and are removed by flotation. Moreover, electrocoagulation has been reported to be very effective for the colour removal of the dye effluent [3,4]. Therefore, it was decided to explore the possibility of using electrocoagulation for the treatment of dye effluent in a common effluent treatment plant.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Treatment of Effluent from Small-Scale Dyeing Unit

Khandegar

Saroha

2013

Indian Chemical Engineer

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Electrochemical treatment of small-scale dyeing unit effluent containing Reactive Yellow 86, Indanthrene Blue RS, Basic GR 4 and Reactive Yellow 145 dyes was carried out with aluminium electrodes in batch mode of operation. The effluent was characterized for various parameters. The experiments were performed for 120 min, keeping the inter-electrode distance at 3 cm with a current density of 0.0625 A/cm 2 ; the colour removal efficiency was determined for each of the four dyes. A colour removal efficiency of 97% was obtained for each of the dyes for an electrolysis time of 120 min. Further experiments were performed using aluminium sulphate as chemical coagulant to compare the colour removal efficiencies obtained by electrocoagulation and chemical coagulation.

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Decolorization of levafix brilliant blue E‐B by electrocoagulation method

Cited by 38 publications

References 42 publications

Comparison of organic dyes removal mechanism in electrocoagulation process using iron and aluminum anodes

Comparison of organic dyes removal mechanism in electrocoagulation process using iron and aluminum anodes

Electrochemical treatment of colour index reactive orange 84 and textile wastewater by using stainless steel and iron electrodes

Electrochemical Treatment of Effluent from Small-Scale Dyeing Unit

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