Influence of operating parameters on phosphate removal from water by electrocoagulation using aluminum electrodes

Attour, Anis; Touati, Mouna; Tlili, Mohamed; Amor, Mohamed Ben; Lapicque, François; Leclerc, Jean-Pierre

doi:10.1016/j.seppur.2013.12.030

Cited by 188 publications

(83 citation statements)

References 24 publications

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“…When aluminum is used as the electrode material, acidic pH values are more convenient for the removal kinetics due to predominant form of Al(OH) 3 (s). The result is in accordance with kindred studies in literature [26] [27].…”

Section: Effect Of Ph On % Cod Removalsupporting

confidence: 92%

Optimization of Electrocoagulation Process for the Removal of Binary Dye Mixtures Using Response Surface Methodology and Estimation of Operating Cost

Shah¹,

Tahir²,

Ullah³

et al. 2017

OJAppS

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The study was useful for the treatment of Reactive red 223 (R223) and Coomassie brilliant blue R250 (CBBR250) binary dye system by electrocoagulation process (EC). Moreover, the Al and Fe electrode were used as an anode and cathode, respectively. The response surface methodology (RSM) was adopted by utilizing central composite design to plan the experimental runs. The EC process was preceded under the effect of operating parameters including pH, NaCl, voltage and electrolysis time. The % color and COD removals were examined as response variables. The removal efficiency of RR223 and CBBR250 dye at optimum values was 89% and 94% and COD removal was 100%. The kinetic study was performed to determine the rate and rate constant. First and second order kinetic models were studied to figure out the exact mechanism of the dye removal using EC process. The estimated cost of the experimental design about 4.486 US$/dm 3 was also determined. This study showed that EC process is an economical way for the treatment of waste water.

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Section: Effect Of Ph On % Cod Removalsupporting

confidence: 92%

Optimization of Electrocoagulation Process for the Removal of Binary Dye Mixtures Using Response Surface Methodology and Estimation of Operating Cost

Shah¹,

Tahir²,

Ullah³

et al. 2017

OJAppS

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“…Recent studies show increases in the ED results and a decrease in removal efficiency due to the fall in ohmic tension between the cathode and the anode (Anand et al, 2014;Attour et al, 2014;Merzouk et al, 2010;Zhang et al, 2013). However, in our study an inverse effect was observed, where an increase in 1 cm ED of 2 and 3 cm favored the removal of color, turbidity and TOC.…”

Section: Resultscontrasting

confidence: 58%

Swine manure digestate treatment using electrocoagulation

Kunz

Steffens

et al. 2016

Sci. agric. (Piracicaba, Braz.)

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Anaerobic biodigestion is an appropriate alternative for the treatment of swine wastewater due to its biogas generation properties and the possibility of its application as a source of energy for heating or electricity. However, digestate can still contain high levels of turbidity, organic carbon and nutrients and must be correctly managed as a biofertilizer, or treated to avoid any impact on the environment. Considering this, electrocoagulation (EC) shows promise as a technology because of its ease of handling and high efficiency in effluent remediation. This study aimed to evaluate the performance of EC in a batch system in the treatment of swine wastewater digestate. The wastewater used in the treatment was sampled from a 10 m 3 biodigestor effluent (digestate) located at Concórdia, Santa Catarina, Brazil. A batch-scale experiment was carried out to evaluate the following two variables: electrode distance (ED) and voltage applied (V). The removal efficiency levels (%) for the best operational condition (2 cm, 5 V) after 30 min were: 97 %, 98 %, 77 % and 10 % for color, turbidity, total organic carbon (TOC) and total nitrogen (TN), respectively. The EC batch system produced efficient results, underlining its promise as an alternative to be applied in the treatment of digestate.

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“…A cell-construction issue has been raised recently: in the context of phosphate removal by electrocoagulation, Attour et al [15] found that the width of the gap between parallel electrodes has an effect on removal efficiencies; the narrow-gap (5 mm) cells are definitely better than the ones with larger gaps (1 and 2 cm). No explanation was offered -the aim of this experiment is to demonstrate the reason.…”

Section: Experiments A3: Thin-gap Cells Are More Effective Than the Brmentioning

confidence: 99%

Electrochemical dissolution of aluminium in electrocoagulation experiments

Fekete

Lengyel

Cserfalvi

et al. 2016

J Solid State Electrochem

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Six experiments are presented to highlight important features of aluminium dissolution when used in electrocoagulation procedure employed to remove oily contaminations from water. First, using a common oil-in-water emulsion: diluted milk, we show that the electrochemically generated coagulant ions are active only in the first few seconds following their generation -hence the electrocoagulation cells' construction should promote the mixing of the nascent Al colloid with the water phase. For this reason the use of the narrow-gap cells is suggested. Second, in experiments with Al-Al electrode pairs and dilute, neutral, unbuffered, aqueous solutions we (i) estimate the maximum amount of Al dissolution on the cathode, and (ii) show how the rate of Al dissolution changes with frequency if the cell voltage polarity is alternating.

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Influence of operating parameters on phosphate removal from water by electrocoagulation using aluminum electrodes

Cited by 188 publications

References 24 publications

Optimization of Electrocoagulation Process for the Removal of Binary Dye Mixtures Using Response Surface Methodology and Estimation of Operating Cost

Optimization of Electrocoagulation Process for the Removal of Binary Dye Mixtures Using Response Surface Methodology and Estimation of Operating Cost

Swine manure digestate treatment using electrocoagulation

Electrochemical dissolution of aluminium in electrocoagulation experiments

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