Investigation of Leachate Treatment with Electrocoagulation and Optimization by Response Surface Methodology

Kabuk, Harun Akif; İlhan, Fatih; Avşar, Yaşar; Kurt, Uğur; Apaydin, Ömer; Gönüllü, Mustafa

doi:10.1002/clen.201300086

Cited by 31 publications

(17 citation statements)

References 32 publications

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“…Therefore, any of the electrode combinations may be used in reducing TN, but Al-Al and Al-Fe electrodes combination performed the best at greater applied potential (15 V). The main reason for TN reduction are denitrification, ammonia stripping, hydrogen electroflotation, electron oxidation and electrocoagulation (Kabuk et al, 2014).…”

Section: Total Nitrogen (Tn) Reductionmentioning

confidence: 99%

“…Similarly, hydrogen electro-flotation process occurs at the cathode and NH 4 -N present in the wastewater or runoff removes by an ammonia stripping method. Ammonia is also removed by electro-oxidation at the anode (Kabuk et al, 2014). The ammonia striping method is enhanced by high pH (>8), high temperature (>50°C) and, high airflow rate (Emamjomeh and Sivakumar, 2009;Ilhan et al, 2008).…”

Section: Supplementary Informationmentioning

confidence: 99%

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Remediation of Feedlot Nutrients Runoff by Electrocoagulation Process

Thapa¹,

Rahman²,

Borhan³

2015

American Journal of Environmental Sciences

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Nutrient runoff from Concentrated Animal Feeding Operations (CAFOs) may cause ground and surface water pollution. Scientists and researchers are continually searching for appropriate technologies to mitigate feedlot nutrient runoff pollution. In this study, suitability of electrocoagulation treatment process was examined under laboratory conditions to mitigate nutrient pollutants from the feedlot runoff. Feedlot runoff was treated with three different type of electrodes such as aluminum (Al-Al), iron (Fe-Fe) and hybrid (Al-Fe) at different electrical voltage potentials (5, 10 and 15 Volts) for a designated time step (up to 30 min). The electrocoagulation cell consisted of two parallel rectangular plate electrodes, immersed in a beaker with 500 mL feedlot runoff and powered by a Direct Current (DC) supply. This study was conducted in batches at room temperature. Results indicated that Electrical Conductivity (EC), Total Phosphorus (TP), Total Nitrogen (TN) and Chemical Oxygen Demand (COD) concentration reduced significantly irrespective of electrode types. Overall, TP concentration reduction was higher (100%) followed by COD (50-75%) and TN (25-60%) concentration. Nutrient removal and specific electrical energy consumption increased with increasing voltage level. Aluminum electrodes were more effective than the other two electrodes for TP reduction at all applied potentials and COD reduction was better at lower applied potential. Hybrid electrodes (Al-Fe) reduced TN better than the other two electrodes.

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Section: Total Nitrogen (Tn) Reductionmentioning

confidence: 99%

Section: Supplementary Informationmentioning

confidence: 99%

Remediation of Feedlot Nutrients Runoff by Electrocoagulation Process

Thapa¹,

Rahman²,

Borhan³

2015

American Journal of Environmental Sciences

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“…BBD technique under RSM can be used to consider the effective parameters interactions on the COD removal (Kabuk et al, ). Figures and show the effects of various variables such as pH, current density (mA/cm 2 ), H 2 O 2 /Fe 2+ molar ratio, volume ratio of H 2 O 2 /PhW (ml/L), reaction time (min), and UVA light (W) on the COD removal through EF and PEF processes.…”

Section: Resultsmentioning

confidence: 99%

Pharmaceutical wastewater treatment using UV‐enhanced electro‐Fenton process: Comparative study

Behfar

Davarnejad

2019

Water Environment Research

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In this research, treatment of a pharmaceutical wastewater (PhW) obtained from a factory by electro-Fenton (EF) and photoelectro-Fenton (PEF) processes was investigated. The effects of several parameters involving pH, current density, H 2 O 2 /Fe 2+ molar ratio, volume ratio of H 2 O 2 /PhW, UVA light, and time were studied. The experiments were designed by Design Expert software, and response surface methodology (RSM) was applied to determine the optimum conditions for the highest COD removal. According to the analysis of variance (ANOVA), time was the most significant parameter on the process response (COD removal) followed by current density. The optimal conditions for 86.85% of COD removal through the EF process were at pH of 2.96, current density of 42.90 mA/cm 2 , H 2 O 2 /Fe 2+ molar ratio of 3.78, volume ratio of H 2 O 2 /PhW of 1.37 ml/L, and reaction time of 58.49 min, while the optimal conditions for 93.00% of COD removal through PEF process were at pH of 2.91, current density of 43.71 mA/cm 2 , H 2 O 2 /Fe 2+ molar ratio of 4.29, volume ratio of H 2 O 2 /PhW of 1.67 ml/L, UVA light of 6 W, and reaction time of 54.24 min. It was concluded that UVA light can increase the COD removal through PEF process around 7% more than that of the EF process at optimum conditions. • Practitioner points• Treatment of a pharmaceutical wastewater by EF and PEF processes was investigated. • Effects of several parameters were entirely studied on both the processes. • RSM was applied to determine optimum conditions for the highest COD removal for both the processes. • UVA light increased COD removal through PEF process (around 7%) at the optimum conditions.

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“…These drawbacks can explain the interest for electrocoagulation (EC) which can eliminate a variety of pollutants from water and wastewater, such as heavy metals , suspended matters , and organic pollutants . As a matter of fact, this technique has been applied successfully for the treatment of various types of wastewater such as dyes effluents , leachate , and restaurant wastewater .…”

Section: Introductionmentioning

confidence: 99%

Removal of Nitroaniline From Water/Ethanol by Electrocoagulation Using Response Surface Methodology

Tamne

Nanseu‐Njiki

Bodoki

et al. 2016

CLEAN Soil Air Water

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The efficiency of electrocoagulation using iron electrodes (Fe0) for the removal of aqueous nitroaniline derivatives (ortho‐, meta‐, para‐) was optimized. Investigated operational parameters include: (i) the current density (318–1542 A/m2); (ii) the pH value (1–11); and (iii) the ethanol level (1–25%). Experimentally, both classical method and response surface methodology were used. Additionally, the D‐optimal design was used to characterize the interactions between current intensity, initial pH value and ethanol level. Using the D‐optimal design aimed at characterizing the impact of ethanol level on the extent of nitroaniline removal. The results showed that the optimal conditions for efficient nitroaniline removal were the following: (i) 5 min electrolysis time; (ii) 200 mg/L initial nitroaniline concentration; (iii) 1274 A/m2 current density; (iv) 6 g/L NaCl; (v) initial pH value of 11; and (vi) 1% ethanol level. It appears that the current intensity (current density) is the most influential parameter, followed by the pH value and the ethanol level. The experimental setup was validated by successfully treating river water contaminated with tested nitroanilines under optimal conditions.

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Investigation of Leachate Treatment with Electrocoagulation and Optimization by Response Surface Methodology

Cited by 31 publications

References 32 publications

Remediation of Feedlot Nutrients Runoff by Electrocoagulation Process

Remediation of Feedlot Nutrients Runoff by Electrocoagulation Process

Pharmaceutical wastewater treatment using UV‐enhanced electro‐Fenton process: Comparative study

Removal of Nitroaniline From Water/Ethanol by Electrocoagulation Using Response Surface Methodology

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