Treatment of reactive dyebath wastewater by electrocoagulation process: Optimization and cost-estimation

Aygün, Ahmet; Nas, Bilgehan; Sevimli, Mehmet Faik

doi:10.1007/s11814-019-0334-7

Cited by 26 publications

(13 citation statements)

References 64 publications

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“…As previously noted by other authors, at a neutral pH level, the maximum removal is observed [66,67]. This outcome is in contrast with the data reported by Aygun et al [57] and Bayramoglu et al [68], who observed that at an optimum pH of 5, the removal efficiencies of color and COD were increased. The reason for this contradiction can be attributed to the aluminum ions that appear in different phases and forms, depending on the pH and the chemical features of the solution.…”

Section: Simultaneous Efficacy Of Critical Parameters On the Removal mentioning

confidence: 64%

“…RSM and CCD are powerful statistical techniques for modeling and optimizing the simultaneous effects of critical factors within a four-factor, five-level framework. The range of experimental variables were determined based on pretest results and the values given in the literature [51,[57][58][59]. In the current work, the modeling and optimization of critical parameters, namely initial pH…”

Section: Response Surface Methodologymentioning

confidence: 99%

“…A previous study achieved 60% and 98% for the removals of COD and turbidity, respectively, and 0.48-5.42 US$/m 3 for operating cost [84] with potato chips manufacturing wastewater. Aygun et al [57] treating reactive dyebath wastewater by EC, reported 85.8% color and 76.9% COD removal with 1.84 €/m 3 operating costs for Al electrode under pH 5.01, electrolysis time 64 min and current density 28.5 A/m 2 . In comparison with other studies, the current results demonstrated that substantial removal of COD and color with low operating costs were also achievable through ECF-sedimentation under optimum conditions.…”

Section: Optimization Step and Cost Estimationmentioning

confidence: 99%

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The treatment of printing and packaging wastewater by electrocoagulation-flotation: the simultaneous efficacy of critical parameters and economics

Emamjomeh¹,

Kakavand²,

Jamali³

et al. 2020

DWT

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In this work, electrocoagulation-flotation (ECF) following sedimentation was applied as a printing and packaging wastewater treatment using four Al electrodes with a parallel monopolar configuration. A sedimentation process was applied after the ECF as a post-treatment phase to remove large pollutants. The simultaneous efficacy of the operating parameters initial color content (1,843.44-12,156.56 ADMI), initial pH (3.56-10.44), current density (6.02-22.18 mA/cm 2), and treatment time (5.62-74.38 min) on color and chemical oxygen demand (COD) removal efficiencies were evaluated alongside processing costs. Response surface methodology (RSM) and central composite design (CCD) optimized these key parameters to achieve the highest removal efficiencies and lowest operating costs. Based on the results analyzed by RSM-CCD, using initial color content of 5,576.38 ADMI, initial pH of 7.29, the current density of 18.49 mA/cm 2 , and treatment time of 59.76 min as optimum operational conditions can result in 97.8% and 92.1% for color and COD removal efficiencies, respectively. At these optimum conditions, operating costs (OPCs), including electrodes material and energy consumption, were 0.07 US$/(kg color removed) and 0.4 US$/(kg COD removed). The results confirm ECF-sedimentation as a promising and costeffective tool for the treatment of printing and packaging wastewater.

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Section: Simultaneous Efficacy Of Critical Parameters On the Removal mentioning

confidence: 64%

Section: Response Surface Methodologymentioning

confidence: 99%

Section: Optimization Step and Cost Estimationmentioning

confidence: 99%

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The treatment of printing and packaging wastewater by electrocoagulation-flotation: the simultaneous efficacy of critical parameters and economics

Emamjomeh¹,

Kakavand²,

Jamali³

et al. 2020

DWT

View full text Add to dashboard Cite

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“…The experimental setup used in this study has been described in our previous publication [42]. At the beginning of each run, NaOH was used to set the pH, and 200 rpm mixing rate in the EC reactor was kept constant throughout the batch experiment at room temperature.…”

Section: Methodsmentioning

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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“…There have been efforts that estimated the operating costs for the removal of COD from PRW as well as other types of wastewater using EC (Giwa et al 2013;Keramati and Ayati 2019;Aygun et al 2019;Asselin et al 2008;Demirci et al 2015;Said and Mostefa 2015;Elazzouzi et al 2017;Kobya et al 2009;Mahesh et al 2016;Yuksel et al 2012;Varank et al 2014;Mohammadi et al 2017;Deghles and Kurt 2015;Guvenc et al 2017;Chopra and Sharma 2015;Kongjao et al 2008;Akyol 2012;Chauhan et al 2016;Sridhar et al 2014;Sahu et al 2015;Bassala et al 2017;Kobya and Delipinar 2008). For example, Giwa et al (2013) and Keramati and Ayati (2019) estimated the operating costs at optimum experimental conditions for treating PRW through EC to be 0.654 US $/m 3 (6.4 US $/kg CODremoved) and 1.45 US $/m 3 (1.7 US $/kg CODremoved), respectively.…”

Section: Introductionmentioning

confidence: 99%

Predesign Cost Estimation of a Potential Wastewater Treatment Plant for Jordan Petroleum Refinery-Electrocoagulation

Sakhel

Geißen

2022

Environ. Process.

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The aim of this paper is to investigate whether simulated Jordan refinery wastewater can be treated through electrocoagulation (EC) to conform to the most stringent Jordanian norms for reusing this wastewater for irrigation of cut flowers and to perform cost analysis for a treatment plant whose core are the EC reactors. The method used for estimating the fixed (capital) costs of the treatment plant is taken from literature and is based on a study estimate (factored estimate) that depends on the knowledge of major items of equipment. Most of the operating costs are estimated based on percentages which are also taken from literature. The best percentage removal of COD, BOD, TSS, fat, oil& grease (FOG), bicarbonate (HCO3 − ), and phenol from simulated Jordan refinery wastewater so that

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Treatment of reactive dyebath wastewater by electrocoagulation process: Optimization and cost-estimation

Cited by 26 publications

References 64 publications

The treatment of printing and packaging wastewater by electrocoagulation-flotation: the simultaneous efficacy of critical parameters and economics

The treatment of printing and packaging wastewater by electrocoagulation-flotation: the simultaneous efficacy of critical parameters and economics

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

Predesign Cost Estimation of a Potential Wastewater Treatment Plant for Jordan Petroleum Refinery-Electrocoagulation

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