Electrochemical treatment of sunflower oil refinery wastewater and optimization of the parameters using response surface methodology

Sharma, Swati; Aygün, Ahmet; Simsek, Halis

doi:10.1016/j.chemosphere.2020.126511

Cited by 46 publications

(16 citation statements)

References 20 publications

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“…Sharma et al [43] investigated the efficiency of the electrocoagulation-electrooxidation (EC-EO) process. They concluded that EC-EO is a more promising method than ECF.…”

Section: Electrode Materialsmentioning

confidence: 99%

Mechanism of the electrocoagulation process and its application for treatment of wastewater: A review

Jovanović¹,

Velinov²,

Petrović³

et al. 2021

Adv Techol

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Treatment of wastewater, especially of industrial origin, is a major challenge. Although wastewater treatment methods have already been established, active efforts are being made to develop more efficient and economical methods. In recent years, the attention has been focused on electrochemical methods, most of which are focused on electrocoagulation. This paper gives a detailed description of the mechanism of the electrocoagulation process, as well as the application of this method in wastewater treatment of different origins.

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“…Sharma et al [43] investigated the efficiency of the electrocoagulation-electrooxidation (EC-EO) process. They concluded that EC-EO is a more promising method than ECF.…”

Section: Electrode Materialsmentioning

confidence: 99%

Mechanism of the electrocoagulation process and its application for treatment of wastewater: A review

Jovanović¹,

Velinov²,

Petrović³

et al. 2021

Adv Techol

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“…At the same time, the one-factor optimization increases the number of experimental runs, which is often very expensive or highly time-consuming approach [37,38]. Response Surface Methodology (RSM) is a combination of mathematical and statistical methods to design the experiments, useful to improve and optimize the process performance [39]. RSM can be used to developed satisfactory relation between response and EC variables with a limited number of experiments [40] Analysis of variance (ANOVA) is a statistical method used to determine the significant effects of variables and goodness of fitted models [41].…”

Section: Introductionmentioning

confidence: 99%

Electrocoagulation of Disperse Dyebath Wastewater: Optimization of Process Variables and Sludge Production

Aygün

Nas

Sevimli

2021

J. Electrochem. Sci. Technol

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This study was conducted to investigate the effect of initial pH, current density, and electrolysis time on process performance in terms of decolorization and chemical oxygen demand (COD) removal from disperse dyebath wastewater (DDW) by mono-polar parallel laboratory scale electrocoagulation (EC) process. COD reduction of 51.3% and decolorization of 92.8% were obtained with operating cost of 0.19 €/m 3 treated wastewater for Al-Al electrode pair, while 90.5% of decolorization and 49.2% of COD reduction were obtained with operating cost of 0.20 €/m 3 treated wastewater for an Fe-Fe electrode pair. The amount of sludge production were highly related to type of the electrode materials. At the optimum conditions, the amount of sludge produced were 0.18 kg/m 3 and 0.28 kg/m 3 for Al-Al and Fe-Fe electrode pairs, respectively. High decolorization can be explained by the hydrophobic nature of the disperse dye, while limited COD removal was observed due to the high dissolved organic matter of the DDW based on auxiliary chemicals. Energy, electrode, and chemical consumptions and sludge handling were considered as major cost items to find a cost-effective and sustainable solution for EC. The contribution of each cost items on operating cost were determined as 10.0%, 51.1%, 30.5% and 8.4% for Al-Al, and they were also determined as 9.0%, 38.0%, 40.5% and 12.5% for Fe-Fe, respectively. COD reduction and decolorization were fitted to first-order kinetic rule.

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“…Their very low solubility in water and very poor degradability cause detrimental effects on the environment (Gurd et al, 2020). Layers of oil and grease can threaten aquatic life by reducing oxygen and light penetration (Sharma et al, 2020). Oil, at higher levels, harms aquatic life, creates obnoxious odors and unpleasant sights, reduces tourism activities, and causes economic damage (Brillas et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Anaerobic Treatment of Oily Wastewater Using A Biofilm-Electrode Reactor: A Kinetic Study And Energy Consumption

Mirshafiee

Rezaee

2021

Preprint

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The present study introduced a laboratory-scale, anaerobic treatment system for the removal of oil from synthetic wastewr using a biofilm-electrode reactor (BER). The operating parameters of current intensity, initial concentration, reaction time, and supporting electrolyte were investigated. The results of the present study showed that the optimal conditions were: a current intensity of 15 mA, COD concentration of 1500 mg/L, a reaction time of three days, and a supporting electrolyte (NaCl) of 150 mg/L. The highest efficiency for the removal of COD was 86.7% using the introduced method, while it was 65.9% using biological processes. Increased efficiency was attributed to the employment of the proposed bioelectrochemical system that stimulated bacterial growth. In the present study, the energy consumed by the bioelectrochemical system was 1.914 kWh/m3. The kinetic study indicated that the removal reaction was more consistent with the modified Stover-Kincannon model. The present study findings indicated that BER is a promising method for the treatment of oil-contaminated wastewaters.

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Electrochemical treatment of sunflower oil refinery wastewater and optimization of the parameters using response surface methodology

Cited by 46 publications

References 20 publications

Mechanism of the electrocoagulation process and its application for treatment of wastewater: A review

Mechanism of the electrocoagulation process and its application for treatment of wastewater: A review

Electrocoagulation of Disperse Dyebath Wastewater: Optimization of Process Variables and Sludge Production

Anaerobic Treatment of Oily Wastewater Using A Biofilm-Electrode Reactor: A Kinetic Study And Energy Consumption

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