Effect of liquid phase physicochemical characteristics on hydrodynamics of an electroflotation column

Ksentini, I.; Kotti, M.; Mansour, L. Ben

doi:10.1080/19443994.2013.800279

Cited by 14 publications

(6 citation statements)

References 21 publications

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“…We noticed that: -For a given liquid phase temperature, increasing current density leads to obtaining turbulent regime. In fact, previous work [9] showed that current density and bubble rise velocity are proportional.…”

Section: Resultsmentioning

confidence: 93%

“…Chen [7] found a proportionality term between the current density and the mass of the formed bubbles. In this same context, other researches [8][9][10][11] related the bubble behavior and the hydrodynamic regime with the separation efficiency. In fact, it was proved that the high separation efficiency could only be obtained in bubbly laminar regime [12].…”

Section: Introductionmentioning

confidence: 93%

See 1 more Smart Citation

The effect of temperature on the efficiency of wastewater treatment by electroflotation process supplied by solar energy

Ksentini

Hmidi

Hajlaoui

et al. 2015

IREC2015 the Sixth International Renewable Energy Congress

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In this work, the effect of liquid phase temperature on the hydrodynamic of oxygen and hydrogen bubbles generated by electroflotation process was studied. The diameter and the rise velocity of bubbles were calculated using the method of video recording and image processing. The effect of both liquid phase physicochemical characteristics and current density applied at the electrodes of the electroflotation column on the bubble flow regimes has been studied. Empirical models based in nonlinear regressions were elaborated summarizing hydrodynamic results. These models were used to optimize the treatment of industrial wastewaters. The treatment consists of the abatement of suspended solids rate which exceeded 90%. The effect of temperature variation on the process efficiency in terms of power consumed by electrodes was also studied. This optimization was the key to dimension an efficient photovoltaic solar system able to supply the process.

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Section: Resultsmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 93%

The effect of temperature on the efficiency of wastewater treatment by electroflotation process supplied by solar energy

Ksentini

Hmidi

Hajlaoui

et al. 2015

IREC2015 the Sixth International Renewable Energy Congress

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“…Model wastewater was cleaned by electroflotation using a laboratory setup consisting of a HY 1803D constant current source, a 500 ml non-flow electroflotator with a cross-sectional area of 10 cm 2 and a device height of 80 cm with an insoluble ORTA anode and a 12x18H10T stainless steel cathode according to the method described in the literature [7]. The scheme of the laboratory electroflotation plant of periodic action is presented in Figure 1.…”

Section: Materials and Research Methodsmentioning

confidence: 99%

“…Electroflotation is an effective and widely studied method for the extraction of finely dispersed colloidal metal hydroxide systems. It has been published in a large number of works in the Russian Federation [7] and abroad [8].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Process of Electroflotation Extraction of Insoluble Compounds Aluminum (Iii) in the Presence of Magnesium, Calcium, Barium and Surfactants

Than

Pyae

Hein

et al. 2020

METAL 2020 Conference Proeedings

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The results of experimental studies of the extraction of insoluble aluminum (III) compounds from aqueous solutions in the presence of surfactants of various nature and alkaline earth metal ions (Mg 2+ , Ca 2+ , Ba 2+ ) by the electroflotation method are being explained in this study. A comparative analysis of the influence of these components on the efficiency of electroflotation extraction of aluminum (III) hydroxide is carried out. It was found that the presence in the solution of Mg 2+ , Ca 2+ , Ba 2 + at a concentration of 0.5 g/l decreases the extraction degree of Al(OH)3 by electroflotation from 92% for Mg 2+ to 31, Ca 2+ to 23%, Ba 2+ to 28% during electroflotation 20 min. Introduction to surfactant systems increases the extraction degree of Al(OH)3 64% for Mg 2+ , 93% for Ca 2+ , 95% for Ba 2+ . The high effectiveness of surfactants is associated with adsorption on Al(OH)3 and hydrophobization of the surface precipitation, which leads to an increase in the degree of electroflotation extraction of the dispersed phase.

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“…The efficiency of electroflotation extraction of metal compounds was found to depend on such factors, as the solution pH, initial ion metal concentration, current load, disperse phase surface characteristics (charge and particle size), presence of the supporting electrolyte, such as Na 2 SO 4 , NaCl, Na 2 CO 3 , NaNO 3 , hydrodynamic regime of electrolysis, etc. [24][25][26]. Special attention should be paid to the effect of organic surfactant additives and flocculants on electroflotation in aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Electroflotation Extraction of Lanthanum and Scandium Hydroxides From Aqueous Solutions

Zhurinov¹,

Kolesnikov²,

Bayeshov³

et al. 2020

SERIES OF GEOLOGY AND TECHNICAL SCIENCES

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Effect of liquid phase physicochemical characteristics on hydrodynamics of an electroflotation column

Cited by 14 publications

References 21 publications

The effect of temperature on the efficiency of wastewater treatment by electroflotation process supplied by solar energy

The effect of temperature on the efficiency of wastewater treatment by electroflotation process supplied by solar energy

Investigation of the Process of Electroflotation Extraction of Insoluble Compounds Aluminum (Iii) in the Presence of Magnesium, Calcium, Barium and Surfactants

Electroflotation Extraction of Lanthanum and Scandium Hydroxides From Aqueous Solutions

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