Comparison of the effects of various supporting electrolytes on the treatment of a dye solution by electrocoagulation process

Keyikoğlu, Ramazan; Can, Orhan Taner; Aygün, Ahmet; Tek, Ahu

doi:10.1016/j.colcom.2019.100210

Cited by 48 publications

(11 citation statements)

References 57 publications

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“…However, these methods pose a few major drawbacks, such as their high operation cost, larger formation of sludge, time consuming (long retention time) and the production of toxic by-products [ 17 , 18 ]. Another approach yet effective in treating wastewater containing dyes is the electrocoagulation (EC) method [ 19 , 20 ]. The EC method is an electrochemical process that applies direct current to the electrodes, normally iron or aluminium, dipped into the electrolytic solution containing the wastewater to be treated.…”

Section: Introductionmentioning

confidence: 99%

Integrated Membrane–Electrocoagulation System for Removal of Celestine Blue Dyes in Wastewater

et al. 2020

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The textile industry provides for the needs of people especially in apparel and household items. The industry also discharges dye-containing wastewater that is typically challenging to treat. Despite the application of the biological and chemical treatments for the treatment of textile wastewater, these methods have their own drawbacks such as non-environment friendly, high cost and energy intensive. This research investigates the efficiency of the celestine blue dye removal from simulated textile wastewater by electrocoagulation (EC) method using iron (Fe) electrodes through an electrolytic cell, integrated with nylon 6,6 nanofiber (NF) membrane filtration for the separation of the flocculants from aqueous water. Based on the results, the integrated system achieves a high dye removal efficiency of 79.4%, by using 1000 ppm of sodium chloride as the electrolyte and 2 V of voltage at a constant pH of 7 and 10 ppm celestine blue dye solution, compared to the standalone EC method in which only 43.2% removal was achieved. Atomic absorption spectroscopy analysis was used to identify the traces of iron in the residual EC solution confirming the absence of iron. The EC-integrated membrane system thus shows superior performance compared to the conventional method whereby an additional 10–30% of dye was removed at 1 V and 2 V using similar energy consumptions.

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Section: Introductionmentioning

confidence: 99%

Integrated Membrane–Electrocoagulation System for Removal of Celestine Blue Dyes in Wastewater

et al. 2020

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“…Keyikoglu et al [66] compared the effects of different supporting electrolytes on the treatment of a dye solution by EC technology [67] [68] [69]. They mentioned the likely hazard of the formation of DBPs which must be considered.…”

Section: Dbbs Generation Throughout Ec Of Dye and Humic Acidmentioning

confidence: 99%

Strategies for Reducing Disinfection By-Products Formation during Electrocoagulation

Ghernaout¹,

Elboughdiri²

2020

OALib

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During the last three decades, the electrocoagulation (EC) process has known an exemplary renaissance in the field of water and wastewater treatment. Several researchers focused on applying this electrochemical technology in removing diverse pollutants such as pathogens and organic matters. During EC application, the hazards of formation of highly toxic disinfection by-products (DBPs) are more and more proved especially in water containing organic matter and halogens especially chloride. This work presents a brief view on the questions related to such issues and challenges. Great efforts remain to be accomplished towards the comprehension of the inherent phenomena related to removing both microorganisms and organic matters in the EC method. Using granular activated carbon post-treatment could hugely diminish the levels and toxicity of DBPs. Further, safe multi-barrier methods, such as distillation and membrane processes, have to be adopted.

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“…Various electrode types such as stainless steel, iron, aluminum, boron doped diamond, titanium coating are used as electrode material in the EC process [13,38,39]. However, it is seen that iron and aluminum electrodes are generally used due to the low cost and yield obtained [8,[40][41][42].…”

Section: Electrocoagulationmentioning

confidence: 99%

“…Approximately 50.000 tons of dye are discharged by textile industry into receiving environments every year [7]. This type of wastewater is regarded as harmful for receiving environments due to its toxicity and high organic components [8]. Removal of color in wastewater is highly difficult due to their resistance to light and oxidation [9].…”

Section: Introcutionmentioning

confidence: 99%

Removal of Reactive Black 5 from Polluted Solutions by Electrocoagulation: Modelling Experimental Data Using Artificial Neural Networks

Oyar

Eren

Özdemir

2020

Sakarya University Journal of Science

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The wide range of today's industry increases the diversity of pollutants in the wastewater characteristics. In particular, the wastewater of the textile industry is highly colored. Different techniques are used for color removal of dyes from wastewater. In this work, the removal efficiency of the textile dye (Reactive Black 5) at different current densities (48.5 A/m 2 , 97.18 A/m 2 , 194.36 A/m 2 , 291.5 A/m 2 , 388.7 A/m 2) was investigated by electrocoagulation method. The dye concentration of wastewater prepared in the laboratory scale was adjusted to 100 mg/L. Two iron electrodes and 3 g NaCl were used in the electrocoagulation system. The samples which taken periodically were measured after the centrifugal processes with the UV spectrophotometer. The experimental results were also modelled with artificial neural networks (ANNs). As a result of the experiments, approximately 90-100% color removal efficiency was obtained. According to the modelling study, the ANNs can predict the color removal efficiency with coefficient of determination (R 2) between the experimental and predicted output variable reached up to 0.99.

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Comparison of the effects of various supporting electrolytes on the treatment of a dye solution by electrocoagulation process

Cited by 48 publications

References 57 publications

Integrated Membrane–Electrocoagulation System for Removal of Celestine Blue Dyes in Wastewater

Integrated Membrane–Electrocoagulation System for Removal of Celestine Blue Dyes in Wastewater

Strategies for Reducing Disinfection By-Products Formation during Electrocoagulation

Removal of Reactive Black 5 from Polluted Solutions by Electrocoagulation: Modelling Experimental Data Using Artificial Neural Networks

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