Electrocoagulation of vegetable oil refinery wastewater using aluminum electrodes

Ün, Ümran Tezcan; Koparal, Ali Savaş; Öğütveren, Ülker Bakır

doi:10.1016/j.jenvman.2007.11.007

Cited by 194 publications

(60 citation statements)

References 24 publications

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“…The energy consumption of 91 kWh/m 3 at 0.1 M Na 2 SO 4 was decreased to 80.6 kWh/m 3 with increasing Na 2 SO 4 concentration to 0.2 M while COD removal was decreased with increasing salt concentration. A similar effect in SEEC with an increase in conductivity was also reported by Tezcan Ün et al [6]. …”

Section: Resultssupporting

confidence: 86%

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Treatment of slaughterhouse wastewater with iron electrodes

Ün¹,

Koparal²,

ütveren³

2008

WIT Transactions on Ecology and the Environment

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This study is mainly focused on the electrocoagulation treatment of slaughterhouse wastewater for determining effects of the basic operating parameters such as current density, and supporting electrolyte dosage using iron electrodes. The performance of the cylindrical electrochemical reactor was evaluated in batch experiments. While one pole of the power supply was connecting to the reactor as an anode, the other was connected to a stirrer for operation as a cathode. Experiments were carried out by introducing the cattle slaughterhouse wastewater into the reactor and applying a certain amount of current to the circuit. The removal efficiency of the COD increased with increasing current density. The removal efficiencies of 51.3%, 53.8%, 59.9% and 61.2% were obtained for the current densities of 5, 10, 15, 20 mA/cm 2 with the energy consumptions of 15, 48, 91 and 168 kWh/m 3 respectively. However increasing the Na 2 SO 4 dosage, which was added as a supporting electrolyte, from 0.1 to 0.2 M has an adverse effect on COD removal. It can be concluded from this study that treatment of slaughterhouse wastewater can be achieved by applying electrocoagulation.

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Section: Resultssupporting

confidence: 86%

“…Removal of organic matter from wastewaters by electrocoagulation has been achieved with high removal efficiencies [5,6]. Electrocoagulation (EC) process generated numerous flocs, which permitted to attain high removal efficiency from wastewater.…”

mentioning

confidence: 99%

Treatment of slaughterhouse wastewater with iron electrodes

Ün¹,

Koparal²,

ütveren³

2008

WIT Transactions on Ecology and the Environment

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“…The metal ions generated are hydrolyzed in the electrochemical cell to produce metal hydroxide ions according to reactions (1)-(3) [9].…”

Section: Electrocoagulationmentioning

confidence: 99%

“…Electrocoagulation, one of the most useful electrochemical methods, is a comparatively new technique for wastewater treatment. Also, electrocoagulation has some advantages such as, short retention time, easy operation, not needed the chemical addition, simple equipment, high sedimentation velocity and possibility of complete automation [7]. Manuscript …”

Section: Introductionmentioning

confidence: 99%

Electrocoagulation of Landfill Leachate with Monopolar Aluminum Electrodes

Ün¹,

Oduncu²

2014

JOCET

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Abstract-In this paper, the removal of COD from landfill leachate using aluminum electrode by the electrocoagulation method was investigated. The studies were run with the parallel plate monopolar aluminum electrodes and the effect of pH and current density on removal efficiency of COD and energy consumption were determined. The initial COD concentration of 4100 mg/L was reduced to 1763 mg/L with the removal efficiency of 57% at the current density of 75 mA/cm 2 and pH 5.Index Terms-Aluminium electrode, landfill leachate, treatment.

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“…A wide diversity of procedures, such as API separators, specific biological systems, ultra-filtration, fenton and photo fenton processes [8], absorption [39] and other methods [34,36] have been used for the reduction of chemical oxygen demand (COD), total petroleum hydrocarbon (TPHs), biochemical oxygen demand (BOD5) and many others in the effluent with some success.…”

Section: Introductionmentioning

confidence: 99%

Process modeling and evaluation of petroleum refinery wastewater treatment through response surface methodology and artificial neural network in a photocatalytic reactor using poly ethyleneimine (PEI)/titania (TiO2) multilayer film on quartz tube

et al. 2014

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In this study, poly ethyleneimine (PEI)/Titania (TiO 2 ) multilayer film on quartz tubes have been successfully fabricated via a layer-by-layer (LbL) self-assembly method. Scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) surface area analysis were carried out for characterization of the layers on quartz tube. The SEM pictures showed that the film surface is smooth and uniform. The BET characterization verified the formation of multilayer thin film. The photocatalytic activity of the PEI/TiO 2 multilayer deposited on the quartz tubes was evaluated in the treatment of raw petroleum refinery wastewater (PRW) under UV light irradiation in three annular photocatalytic reactors. This study examined the impact of initial chemical oxygen demand (COD) concentration, H 2 O 2 concentration, pH and reaction time on the PRW treatment and the results were used to generate both a response surface methodology (RSM) model and an artificial neural network (ANN) model. Maximum COD removal (98 %) was achieved at the optimum conditions (initial COD concentration of 300 mg/l, hydrogen peroxide concentration of 8.8 mM, pH of 5 and reaction time of 120 min). A comparison between the model results and experimental data gave a high correlation coefficient (R ANN 2 = 0.9632, R RSM 2 = 0.943) and showed that two models were able to predict COD removal from PRW by PEI/TiO 2 /UV process. However, ANN model was superior to RSM model with higher value of coefficient of determination (0.9632 ANN [ 0.94 RSM ) and the lower root mean square error (RMSE) (3.377 AAN \ 3.569 RSM ). The average percentage error for ANN and RSM models was 0.18 and 0.73, respectively, indicating the superiority of ANN in capturing the nonlinear behavior of the system. It was clear that the best networks were able to predict the experimental responses more accurately than the multiple regression analysis.

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Electrocoagulation of vegetable oil refinery wastewater using aluminum electrodes

Cited by 194 publications

References 24 publications

Treatment of slaughterhouse wastewater with iron electrodes

Treatment of slaughterhouse wastewater with iron electrodes

Electrocoagulation of Landfill Leachate with Monopolar Aluminum Electrodes

Process modeling and evaluation of petroleum refinery wastewater treatment through response surface methodology and artificial neural network in a photocatalytic reactor using poly ethyleneimine (PEI)/titania (TiO2) multilayer film on quartz tube

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