Electrocoagulation in the dual application on the simultaneous removal of fluoride and nitrate anions through respective adsorption/reduction processes and modelling of continuous process

Tounsi, Hanane; Chaabane, T.; Omine, Kiyoshi; Sivasankar, V.; Sano, H.; Hecini, M.; Darchen, André

doi:10.1016/j.jwpe.2022.102584

Cited by 21 publications

(10 citation statements)

References 80 publications

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“…% Removal efficiency = (5) where C 0 is the initial COD and TP value (mg/L), C t is the COD and TP value at t time.…”

Section: Methodsmentioning

confidence: 99%

“…EC is one of the treatment methods that can be used to remove high organic pollutants. EC was tested successfully to treat fluoride [5], polyvinyl alcohol [6,7], phenol [8], tannery [9], arsenic [10], humic substance [11], hydroquinone [12], and boron [13]. EC has also been proposed to treat various food industry wastewaters such as card boast [14], offset printing wastewater [15], landfill leachate [16], drinking water [17,18], textile wastewater [19], and olive mill wastewater [20].…”

Section: Introductionmentioning

confidence: 99%

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The Investigation of Treatment of Pistachio Processing Industrial Wastewater by Electrochemical Methods in Terms of Chemical Oxygen Demand and Total Phenol Removal

Yilmaz,

Fil,

Yilmaz

et al. 2024

J. Electrochem. Sci. Technol

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This work aims to investigate the efficiency of electrocoagulation (EC) of pistachio processing industrial wastewater (PPIW) using the continuous EC process. The tubular reactor made of stainless steel with an internal diameter of 60 mm was used as a cathode electrode. The effect of some parameters was examined on the removal of chemical oxygen demand (COD) and total phenols (TP) removal efficiency. The influences of the initial pH of wastewater (from 4 to 8), flow rate (from 25 to 125 mL/min), current density (from 7 to 21 mA/cm2), and supporting electrolyte type (NaCl, NaNO3, and Na2SO4), supporting electrolyte concentration (from 10 to 100 mg/L NaCl) on removal efficiency were investigated to determine the best experimental conditions. The examination of the physico-chemical parameters during the EC treatment showed that the best removal efficiency was obtained under conditions where the flow rate was 25 mL/min (20 min reaction time), the pH value was 5.2, and the current density was 21 mA/cm2 has set. Under these experimental conditions, COD and TP removal efficiency were found to be 75% and 97%, respectively, while energy consumption was 18.5 kW h/m3. The study results show that the EC can be applied to PPIW pre-treatment.

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“…% Removal efficiency = (5) where C 0 is the initial COD and TP value (mg/L), C t is the COD and TP value at t time.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Investigation of Treatment of Pistachio Processing Industrial Wastewater by Electrochemical Methods in Terms of Chemical Oxygen Demand and Total Phenol Removal

Yilmaz,

Fil,

Yilmaz

et al. 2024

J. Electrochem. Sci. Technol

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show abstract

“…The quadratic model was chosen for further analysis because it yielded good adjusted and predicted R 2 values. The RE% in terms of several independent variables is calculated using the design response variable in the model, as expressed in eqn (8). Thus, the Design-Expert software was used to develop the equation in coded factors, which can further predict the response behavior for each factor level.…”

Section: Model Fit and Statistical Analysismentioning

confidence: 99%

“…Various technologies have been developed and adopted for water defluoridation including electrodialysis, 5 adsorption, 6 ion exchange, 7 electrocoagulation, 8 and reverse osmosis. 9,10 These well-established methods can reduce F − concentration to a tolerable level (1.5 mg L −1 as recommended by the World Health Organization (WHO)).…”

Section: Introductionmentioning

confidence: 99%

Water defluoridation using Al/Fe/Ti ternary metal oxide-loaded activated carbon by capacitive deionization

Alfredy

Elisadiki

Kim

et al. 2023

Environ. Sci.: Water Res. Technol.

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“…There is a study on nitrate and uoride removal, which was investigated in 2022, where at pH = 5.94, current density of 9.09 mA.cm − 2 and aluminum electrodes nitrate and uoride removal were 42.83% and 88.28%, respectively (Tounsi et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Optimization of simultaneous removal of phosphate and nitrate in synthetic wastewater by enhanced electrocoagulation process

Torabinejad-yazdi

Delnavaz

2022

Preprint

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The presence of pollutants such as nitrate and phosphate compounds affects the quality of water resources. This study aims to investigate the simultaneous removal of nitrate and phosphate in a batch reactor using an enhanced electrocoagulation process. Initial concentration, current density, pH, and time were the chosen effective parameters considered in 5 levels. Their effect on the removal efficiency of phosphate and nitrate was evaluated. Experiments were designed by the response surface method (RSM) to save time and costs. For this purpose, first, 30 experiments were modeled by design expert software, and then optimal conditions were determined for variables. The optimal conditions were obtained by the following items: current density 36.5 A/m2, initial concentration 140 mg/L, pH 6, and time 65min. These conditions led to removing 77% of nitrate and 98% of phosphate. Finally, the effect of electrode coating with ZnO nanoparticles performed by the sol-gel method under optimal conditions was considered. Cyclic voltammetry (CV) was used to evaluate the impact of the coating layer. The modified electrode by nanoparticles provides a larger surface area which consumes less energy than a simple electrode.

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Electrocoagulation in the dual application on the simultaneous removal of fluoride and nitrate anions through respective adsorption/reduction processes and modelling of continuous process

Cited by 21 publications

References 80 publications

The Investigation of Treatment of Pistachio Processing Industrial Wastewater by Electrochemical Methods in Terms of Chemical Oxygen Demand and Total Phenol Removal

The Investigation of Treatment of Pistachio Processing Industrial Wastewater by Electrochemical Methods in Terms of Chemical Oxygen Demand and Total Phenol Removal

Water defluoridation using Al/Fe/Ti ternary metal oxide-loaded activated carbon by capacitive deionization

Optimization of simultaneous removal of phosphate and nitrate in synthetic wastewater by enhanced electrocoagulation process

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