Remediation of Feedlot Nutrients Runoff by Electrocoagulation Process

Thapa, Arjun; Rahman, Shafiqur; Borhan, Md. Saidul

doi:10.3844/ajessp.2015.366.379

Cited by 4 publications

(7 citation statements)

References 45 publications

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“…Subsequently, this process initiates polymerization reactions when aluminum hydroxide particles reached a sufficient concentration and react with phosphate ions present in the solution and formed aluminum phosphate (Eqs. 2, 3) and sediment in the solution and helps to reduce phosphorus from the wastewater [3, 16, 17]. These results are also consistent with the findings in [18] studied on the removal of phosphates by electrocoagulation using aluminum electrodes and investigated the removal efficiency with several initial concentrations of phosphates, ranging from 10 to 200 mg/L in a series of six pair of aluminum electrodes.…”

Section: Optimization Of the Different Parameters In Electrocoagulatisupporting

confidence: 83%

“…Therefore, longer electrolysis time lead to better effect of coagulation on phosphates. This result is supported by [14, 16, 17, 19] studies on removal of phosphate from drinking water by electrocoagulation process, Phosphorus Removal from wastewater in Johkasou Sewage treatment tank by electro-coagulation and phosphate removal efficiency electrocoagulation wastewater using iron and aluminum electrodes, respectively.…”

Section: Characterization Of Sludge and Aluminum Plate Electrodes Usisupporting

confidence: 62%

“…This is due to the fact that the number of metal hydroxide flocs formed may be insufficient to sediment the greater number of phosphate ions at higher initial phosphorus concentration. Similarly [7, 9, 13, 16, 17] were studied on the removal of phosphate from wastewater using electrocoagulation techniques. Their result revealed that the increase in phosphorus concentrations leads to decrease in removal efficiency.

Fig.…”

Section: Optimization Of the Different Parameters In Electrocoagulatimentioning

confidence: 99%

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Treatment and characterization of phosphorus from synthetic wastewater using aluminum plate electrodes in the electrocoagulation process

2019

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The main objective of this study is treatment and characterization of phosphorus from synthetic wastewater using aluminum electrodes in the electrocoagulation process. EC experimental setups were designed and different parameters were optimized. The maximum amounts of phosphorus removal efficiencies were observed at pH 7. The phosphorus removal efficiency increases from 85.16 to 97.65% as the temperature increases from 15 to 45 °C, beyond this temperature, there is small effect on removal efficiency. Pollutant removal efficiency increases with an increase in the electrolysis time. At lower initial concentrations the removal efficiencies reached to their maximum values while at the highest initial concentration, the phosphorus removal efficiency was decreased. The increase of current density improves the efficiency of phosphorus removal. Energy and aluminum consumption decreases with increasing initial concentration of phosphorus. Field Emission Scanning Electron Microscope (FESEM) image analysis demonstrated very fine structures for aluminum hydroxide/oxyhydroxides and aluminum phosphate. The existence of the different elemental composition in the sludge was proved by the help of Energy Dispersive X-ray Analysis (EDXS), indicating that the aluminum, oxygen and phosphorus were present in the product. From X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR) and Raman analyses of the sludge product, it is concluded that the chemical speciation of the by-products can be mostly aluminum hydroxide and aluminum phosphate.

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Section: Optimization Of the Different Parameters In Electrocoagulatisupporting

confidence: 83%

Section: Characterization Of Sludge and Aluminum Plate Electrodes Usisupporting

confidence: 62%

Fig.…”

Section: Optimization Of the Different Parameters In Electrocoagulatimentioning

confidence: 99%

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Treatment and characterization of phosphorus from synthetic wastewater using aluminum plate electrodes in the electrocoagulation process

2019

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“…6 shows that the optimum removal efficiency of N, reached 69.5%. Incidentally, another study attained an optimum of 71.8% removal efficiency of N when treating dairy wastewaters with Al electrodes 44 .…”

Section: Effects Of the Parameters On Batch Experimentsmentioning

confidence: 98%

Treatment of Dairy Wastewater by Electrocoagulation using Iron Filings Electrodes

Ahmed,

Atiya,

M-Ridha

2023

Baghdad Sci.J

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This study investigated the treatment of dairy wastewater using the electrocoagulation method with iron filings as electrodes. The study dealt with real samples collected from local factory for dairy products in Baghdad. The Response Surface Methodology (RSM) was used to optimize five experimental variables at six levels for each variable, for estimating chemical oxygen demand (COD) removal efficiency. These variables were the distance between electrodes, detention time, dosage of NaCl as electrolyte, initial COD concentration, and current density. RSM was investigated the direct and complex interaction effects between parameters to estimate the optimum values. The respective optimum value was 1 cm for the distance between electrodes, (60 – 120) min for detention time, 250 mg NaCl/L added, C0/6 = 5,775 mg COD/L as initial COD concentration, and 7.884 - 8.077 mA/cm2 as current provided. At the optimum parameter values, the optimum COD removal efﬁciency was 73.4%. Meanwhile, the study also performed removal efficiency for nitrogen (N) and phosphate (P) due to their effects on the aquatic life and systems. The optimum removal efficiency for phosphorus and nitrogen was 98.0% and 80.3%, respectively. Due to its effects on the environment and to comply with local legislations, treating these wastewaters using eco-friendly processes was highly recommended taking in consideration the economic feasibility, flexibility and easiness to operate. In addition, the study proved that the high surface area for iron filings played a crucial role in removing process.

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“…Furthermore, [Kuokkanen, 2015] applied electrocoagulation for the removal of phosphate from mining industry wastewater using hybrid aluminum and iron electrodes with an efficiency greater than 90%. Similarly, [Thapa, 2015] used this process to mitigate the contamination or pollution with effluents from feedlots with high nitrogen and phosphorous content, where the phosphorus removal exceeded 95%, while the nitrogen removal varied from 25% to 60%. [Taufer, 2016] reported a total phosphorous removal efficiency of 95.6% and total nitrogen removal efficiency of 71.8% from the dairy industry wastewater using aluminum electrodes.…”

Section: Introductionmentioning

confidence: 99%

Removal of Nitrogen and Phosphorus from Domestic Wastewater by Electrocoagulation: Application of Multilevel Factorial Design

Aguilar-Ascón¹

2020

J. Ecol. Eng.

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The main objective of this investigation was to evaluate the efficiency of electrocoagulation in eliminating nitrogen and phosphorous from domestic wastewater and to determine the main operating parameters affecting the process. Accordingly, an acrylic reactor and aluminum (cathode) and iron (anode) electrodes were used. The tests were performed based on a multilevel factorial experimental design, considering current intensity, treatment time, and pH as factors. The design response variables were the percentage of nitrogen and phosphorous removal. In the case of phosphorus, the removal rates of up to 99% were reached after 40 minutes of treatment with current intensities of 3 amps and at a modified pH of 6. The nitrogen removal was up to 27% with a treatment time of 40 minutes, 3 amps, and a pH of 6. A statistical analysis revealed that pH did not have a significant effect on the nitrogen removal process, whereas in the phosphorus removal, the three factors influenced the process at a confidence level of 0.05. The results indicate that the electrocoagulation process in this type of water is very efficient in the removal of phosphorus, whereas for nitrogen, the efficiency decreases noticeably. However, electrocoagulation has an advantage over other conventional treatment technologies, because it does not require additional treatment units to remove phosphorus.

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Remediation of Feedlot Nutrients Runoff by Electrocoagulation Process

Cited by 4 publications

References 45 publications

Treatment and characterization of phosphorus from synthetic wastewater using aluminum plate electrodes in the electrocoagulation process

Treatment and characterization of phosphorus from synthetic wastewater using aluminum plate electrodes in the electrocoagulation process

Treatment of Dairy Wastewater by Electrocoagulation using Iron Filings Electrodes

Removal of Nitrogen and Phosphorus from Domestic Wastewater by Electrocoagulation: Application of Multilevel Factorial Design

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