Treatment of a dairy effluent by classical electrocoagulation and indirect electrocoagulation with aluminum electrodes

Tchamango, Serge Raoul; Ngayo, Kevine Wandji; Belibi, Placide Désiré Belibi; Nkouam, Francine Tsopjio; Ngassoum, Martin Benoît

doi:10.1080/01496395.2020.1748889

Cited by 19 publications

(7 citation statements)

References 51 publications

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“…The effectiveness of a treatment by electrocoagulation depends on the pH of the effluent [30,32,43]. According to the nature of the effluents, the metal hydroxides which favour coagulation are formed at different pH, depending on the acid or alkaline behaviour of the medium.…”

Section: Effect Of the Initial Ph On The Turbidity And The Organic Mamentioning

confidence: 99%

“…This decrease is ascribed to the formation of aluminate ion Al(OH) 4 following Al(OH) 3 re-dissolution in the presence of an excess of hydroxyl ions. Al(OH) 4 being a negatively charged and soluble species, could not fix the pollutants, but rather contributes to inhibit the electrolytic treatment according to the equation [31,32]: In all cases, the maximum of turbidity and organic matter removals are obtained at pH ¼ 7, and this value is considered as optimum pH for the treatment.…”

Section: Effect Of the Initial Ph On The Turbidity And The Organic Mamentioning

confidence: 99%

“…After 15 min of electrolysis, the maximum removal efficiency of OM is 93.30% whereas turbidity is almost completely eliminated. The remaining organic matter at the end of the treatment could be due to dissolved organic matter contained in the effluent and which is not eliminated by electrocoagulation [31,32].…”

Section: Effect Of the Current Densitymentioning

confidence: 99%

“…At high pH values, hydroxyl ions generated at the cathode during hydrogen evolution may attack the cathode by the following reaction [32,35]…”

Section: Introductionmentioning

confidence: 99%

“…Aluminium and hydroxide ions released at the electrodes can react to form monomeric and polymeric species Al [31,32].…”

Section: Introductionmentioning

confidence: 99%

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Treatment of a Worn mineral oil Effluent by Electrocoagulation using aluminium Electrodes

Tchamango¹,

Lactio²,

Kamdem³

et al. 2020

Karbala International Journal of Modern Science

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Water pollution by oils is more and more a preoccupation because of its increasing occurrence and the hazard to human life and environment. Depollution of oily effluents can sometimes generate a secondary pollution (with chemical coagulation / flocculation processes) or be very costly (ultracentrifugation). In this work, electrocoagulation with aluminium electrodes was applied to the treatment of a worn mineral oil effluent. For this to be achieved, the influence of the pH and the current density on the turbidity and organic matter was first investigated. A liquid-liquid extraction was then carried out on the oil samples in order to isolate hydrocarbons and study their behaviour. Finally, these hydrocarbons were analysed by gas chromatography (GC-FID) to evaluate their removal efficiency. The results obtained showed that optimal conditions were as follows: initial pH=7 and current density = 10.98 mA.cm-2. The results obtained with a supporting electrolyte concentration set at 0.5 mg.L-1 showed that optimal conditions were as follows: initial pH=7 and current density = 10.98 mA.cm-2 .) In these conditions, the turbidity was almost totally eliminated and organic matter removal efficiency was 93.30%. Analyses of the various chromatograms showed that 98.83, 99.56 and 93.02% respectively of aliphatic fraction, unsaturated hydrocarbons and polycyclic aromatic hydrocarbons (PAHs) were eliminated during electrocoagulation of the worn mineral effluent. However, the absence of regular peaks was observed on the chromatograms, and that was due to unidentified heavy PAHs. Thus, FID did not seem sensitive enough to identify and characterize PAHs compounds based only on retention.

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Section: Effect Of the Initial Ph On The Turbidity And The Organic Mamentioning

confidence: 99%

Section: Effect Of the Initial Ph On The Turbidity And The Organic Mamentioning

confidence: 99%

Section: Effect Of the Current Densitymentioning

confidence: 99%

“…At high pH values, hydroxyl ions generated at the cathode during hydrogen evolution may attack the cathode by the following reaction [32,35]…”

Section: Introductionmentioning

confidence: 99%

“…Aluminium and hydroxide ions released at the electrodes can react to form monomeric and polymeric species Al [31,32].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Treatment of a Worn mineral oil Effluent by Electrocoagulation using aluminium Electrodes

Tchamango¹,

Lactio²,

Kamdem³

et al. 2020

Karbala International Journal of Modern Science

Self Cite

View full text Add to dashboard Cite

show abstract

Dairy wastewater treatment by peroxi-electrocoagulation method in hybrid electrocoagulation reactor and development of pigment from waste sludge

Bhuvanendran,

Bhuvaneshwari,

Prasannakumari

et al. 2024

J Mater Cycles Waste Manag

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Comparative evaluation between Taguchi method and response surface method for optimization of electrocoagulation process in the context of treatment of dairy industry wastewater

K.,

Pattnaik,

Das

2024

Environ Monit Assess

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Treatment of a dairy effluent by classical electrocoagulation and indirect electrocoagulation with aluminum electrodes

Cited by 19 publications

References 51 publications

Treatment of a Worn mineral oil Effluent by Electrocoagulation using aluminium Electrodes

Treatment of a Worn mineral oil Effluent by Electrocoagulation using aluminium Electrodes

Dairy wastewater treatment by peroxi-electrocoagulation method in hybrid electrocoagulation reactor and development of pigment from waste sludge

Comparative evaluation between Taguchi method and response surface method for optimization of electrocoagulation process in the context of treatment of dairy industry wastewater

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