Treatment of leachate by electrocoagulation using aluminum and iron electrodes

İlhan, Fatih; Kurt, Uğur; Apaydin, Ömer; Gönüllü, Mustafa

doi:10.1016/j.jhazmat.2007.10.035

Cited by 243 publications

(132 citation statements)

References 36 publications

(40 reference statements)

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“…4). According to others (Dinh-Duc et al, 2014;Ilhan et al, 2008;Inan and Alaydin, 2014;Laridi et al, 2005), the TP reductions were mainly due to the production of Al or Fe ions in an anode. The OHproduced in the cathode is immediately react with metal ions in the runoff and produce metallic hydroxides.…”

Section: Total Phosphorus (Tp) Reductionmentioning

confidence: 86%

“…This runoff may contaminate surface and groundwater, can cause eutrophication and reduce the oxygen level in surface water which may suppress the biodiversity of lagoons and estuaries (Ansari et al, 2011;Hribar and Schultz, 2010;Prophet and Edwards, 1973). To mitigate this problem, researchers are trying to adopt different technologies such as membrane filtration, advanced oxidation process, air flotation, distillation, evapotranspiration, nitrification, precipitation, ammonia stripping and electro-dialysis (Bensadok et al, 2011;Ilhan et al, 2008). Though some of these methods are effective, sometimes these methods may become complex, expensive and sophisticated which may require specialized technical knowledge (Crites et al, 2014).…”

Section: Introductionmentioning

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 Phosphorus (Tp) Reductionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Remediation of Feedlot Nutrients Runoff by Electrocoagulation Process

Thapa¹,

Rahman²,

Borhan³

2015

American Journal of Environmental Sciences

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“…In this way, various results have been reported throughout the literatures, especially about application of different anode materials. In scope of textile and organic wastewater treatment using electrocoagulation, Phalakornkule et al (2010) stated that iron was superior to aluminum, while Ilhan et al (2008) concluded that aluminum provided better removal in comparison with iron electrode. Furthermore, Linares-Hernandez et al found that iron was more effective in reducing COD, whilst aluminum was more effective in removing color (Phalakornkule et al 2010;Ilhan et al 2008;Linares-Hernández et al 2009).…”

mentioning

confidence: 99%

Electrocoagulation/Flotation of Textile Wastewater with Simultaneous Application of Aluminum and Iron as Anode

et al. 2014

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Wastewater discharged from textile industry contains a variety of polluting substances including dyes. Amongst treatment processes, electrocoagulation/flotation is a promising method for color removal from textile wastewater. In this study, the performance of a new electrocoagulation/flotation with combined Fe-Al anodes and a copper made cell as cathode was investigated for the treatment of real textile wastewater. The optimal operational condition for decolorization was pH=7, 300 mA electrical current, 3 cm distance between the two anodes and 40 min reaction time using iron and aluminum as anode materials simultaneously. Under this condition, 98 % color (ADMI) removal was achieved. Furthermore, 87 % COD removal was obtained in similar optimal condition except in 400 mA. To investigate electrical current dependency on the COD removal rate, a kinetic study was carried out and data were in good agreement with the first order kinetic model. The rate constants (k) of COD removal were 0.0234, 0.0291, 0.0393 and 0.0519 min −1 for 100, 200, 300 and 400 mA, respectively.

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“…This method is categorized by simple equipment and easy operation. The electrocoagulation processes have lesser amount of sludge [6] and having features like relatively more economic and higher treatment efficiency has been a promising method [7].…”

Section: Introductionmentioning

confidence: 99%

Treatment of landfill leachate by electrocoagulation using aluminum electrodes

Taqwa

Syakdani

2017

MATEC Web Conf.

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Abstract. Leachate is wastewater decomposition of organic waste that can contaminate soil and groundwater if it is not handle properly. Contamination by leachate can be be prevented by reducing leachate level before the wastewater reaches the ground. One of the methods used is electrocoagulation. Electrocoagulation is an electrochemical water treatment method where in anoda occured the release of active coagulant as metalic ion, while in cathode occured the electrolysis reaction in a form of the release of hydrogen gas. This study is objected to investigate the effectiveness of electrocoagulation in removing Biochemical Oxygen Demand (BOD 5 ), Chemical Oxygen Demand (COD), NH 3 -N and lead (Pb) of leachate. In this research, the processing of leachate with electrocoagulation method using aluminum electrode has been proceed with the dimension of electrode 16.5 cm x 7 cm x 0.2 cm. Optimum conditions and the effectiveness of electrocoagulation for each parameter are in the current density 30 A/m 2 with 60 minutes of time process. The electrocoagulation method is effectively reduced the value of TSS 46.80%; BOD 5 71.33%; COD 73.77%; Pb 62.5%; NH 3 -N 57.92%; and for the increased of pH from 8.03 to 8.95, respectively. Electrocoagulation method are successfully reduced the levels of pollutants in accordance with environmental standard.

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Treatment of leachate by electrocoagulation using aluminum and iron electrodes

Cited by 243 publications

References 36 publications

Remediation of Feedlot Nutrients Runoff by Electrocoagulation Process

Remediation of Feedlot Nutrients Runoff by Electrocoagulation Process

Electrocoagulation/Flotation of Textile Wastewater with Simultaneous Application of Aluminum and Iron as Anode

Treatment of landfill leachate by electrocoagulation using aluminum electrodes

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