Leachate post-treatment by electrocoagulation process: Effect of polarity switching and anode-to-cathode surface area

Sanei, Emad; Mokhtarani, Nader

doi:10.1016/j.jenvman.2022.115733

Cited by 13 publications

(4 citation statements)

References 33 publications

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“…After 45 minutes, flocculants were formed via Al(OH)3. The formed flocculants bind a lot of suspended and precipitated substances, so they may reduce the TSS level in wastewater [62,73]. Electrocoagulation consists of cation and anion reactions.…”

Section: Resultsmentioning

confidence: 99%

Neutralization of Acidity (pH) and Reduction of Total Suspended Solids (TSS) by Solar-Powered Electrocoagulation System

Fikri,

Sulistiawan,

Riyanto

et al. 2023

Civ Eng J

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This study investigates the effect of electrocoagulation contact time on the pH and TSS of wastewater discharged from the wastewater treatment plant (WWTP) of the Psychiatric Hospital of West Java Province. The experiment followed the pretest-posttest control group design. This study involved testing 56 wastewater samples six times before and after treatment. Each treatment was repeated four times, and there was one control group for each repetition. The electrocoagulation tool used in this study consisted of six 1-mm electrode plates that were 8 cm apart, a current strength of 5A, a voltage of 12V, and a 50-Watt solar panel. The data were analyzed using descriptive and inferential statistics. The results showed that all electrocoagulation contact time treatments had a significant effect on increasing the pH and the TSS. Additionally, the electrocoagulation tool was found to be effective, stable, portable, and environmentally friendly, with a self-cleaning system that reduced operational costs and saved electricity through the use of solar panels. This study contributes to the development of an effective electrocoagulation toll for wastewater treatment and the determination of the optimal contact time for the tool, providing a practical solution to overcome the problems of pH and TSS in wastewater. These findings can be applied to other wastewater treatment plants, thus improving the quality of discharged wastewater. Doi: 10.28991/CEJ-2023-09-05-09 Full Text: PDF

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Section: Resultsmentioning

confidence: 99%

Neutralization of Acidity (pH) and Reduction of Total Suspended Solids (TSS) by Solar-Powered Electrocoagulation System

Fikri,

Sulistiawan,

Riyanto

et al. 2023

Civ Eng J

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“…Currently, electrocoagulation is combined with various advanced oxidation processes such as peroxide-coagulation 34 , sulfate radical-based advanced oxidation process (SR-AOP) and electro-Fenton (EF) 35 , and electrooxidation (EO) and peroxymonosulfate (PMS)/UV/CuFe2O4 20 . Equally, the change in polarity from anode to cathode presents significant results 36 . This presents a valuable opportunity for further research into the most efficient option for each operating condition.…”

Section: Discussionmentioning

confidence: 98%

Determination of the effectiveness of the electrocoagulation process in the treatment of leachate from the controlled landfill site in Francisco de Orellana canton

Cumbicus,

Hurtado,

Coello

et al. 2024

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The inadequate management of leachate produced in landfill sites, sanitary dumps, or its incomplete treatment generates significant environmental and public health impacts. These conditions are expected in developing countries and are a major concern, especially in sensitive areas like the Amazon. This study investigated the efficiency of electrocoagulation for removing BOD5, COD, TSS, turbidity, and color using a laboratory-scale reactor. Samples of raw leachate from the controlled landfill site in Francisco de Orellana canton, located in the Ecuadorian Amazon, were used. First, the initial conditions of the leachate were determined through a physicochemical characterization, where a reduced presence of heavy metals and high biodegradability were identified, suggesting that it is old leachate. In turn, a reactor with 5 electrodes was installed, where aluminum was used as a cathode and iron as an anode. Finally, electrocoagulation was employed with various operational combinations, where a run using 2.5 V and 20 minutes showed the highest removal efficiency on average, with reductions of 85.23% of BOD5, 98.20% of COD, 11.30% of TSS, 96.52% of turbidity, and 90.73% of color. Keywords: Electrocoagulation; Leachate; Leachate treatment.

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“…43 Sanei & Mokhtarani found that using a current density of 12.8 mA cm −2 and an operation time of 90 min results in 40% COD removal. 44 Likewise, De et al provided that, under optimized conditions, a 51.9% reduction of COD was achieved at a current density of 3.13 mA cm −2 and an electrolysis time of 24.8 min. 45 According to the above, it is evident that there is a wide variety of operational parameters used in EC systems; the optimum values seemed to depend on the studied system.…”

Section: Introductionmentioning

confidence: 98%

Operational variable effect on the COD removal efficiency using electrocoagulation in landfill leachate treatment

Carrasco

Núñez

Larral

et al. 2023

Environ. Sci.: Water Res. Technol.

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Leachate post-treatment by electrocoagulation process: Effect of polarity switching and anode-to-cathode surface area

Cited by 13 publications

References 33 publications

Neutralization of Acidity (pH) and Reduction of Total Suspended Solids (TSS) by Solar-Powered Electrocoagulation System

Neutralization of Acidity (pH) and Reduction of Total Suspended Solids (TSS) by Solar-Powered Electrocoagulation System

Determination of the effectiveness of the electrocoagulation process in the treatment of leachate from the controlled landfill site in Francisco de Orellana canton

Operational variable effect on the COD removal efficiency using electrocoagulation in landfill leachate treatment

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