Comparison and understanding of fluoride removal mechanism in Ca2+, Mg2+ and Al3+ ion assisted electrocoagulation process using Fe and Al electrodes

Govindan, K.; Raja, Muhammad Asif Zahoor; Maheshwari, Subramanian Uma; Noel, M.; Oren, Yoram

doi:10.1016/j.jece.2015.06.014

Cited by 37 publications

(15 citation statements)

References 36 publications

(55 reference statements)

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“…Al (OH) 3 has a strong affinity to adsorb fluoride [14]. Several studies have demonstrated that EC process using sacrificial electrodes is an efficient process for fluoride removal [15][16][17][18][19][20].…”

Section: +mentioning

confidence: 99%

Fluoride removal from synthetic groundwater by electrocoagulation process: parametric and energy evaluation

Chibani¹,

Barhoumi²,

Ncib³

et al. 2019

DWT

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This study investigates the effect of several parameters on the electrocoagulation process has been studied in order to optimize the evolution of the fluoride removal percentage and the energy consumption. Optimum experimental conditions of fluoride removal were determined as: pH i = 6, J = 0.27 mA/cm 2 , t EC = 30 min, [NaCl] = 0.5 g/L, d i = 1 cm, S/V = 7.2 m-1 and Stirring speed = 300 rpm with two aluminum electrodes. These operating conditions are allowed to achieve fluoride removal of over 85% in a relatively short operating time with low energy consumption (0.0396 kWh/m 3). The results fitted with the Langmuir and Freundlich equations showed that fluoride removal was achieved by a monolayer adsorption, with a finite number of identical sites. To study the rate-limiting step, the kinetic data of fluoride were analyzed using first-order and second-order kinetic models. Under optimal conditions with 10 and 20 min treatment, fluoride was completely removed for initial concentration of 3 and 6 mg/L respectively. Moreover, for fluoride initial concentration of 10 mg/L, it is possible to reach a residual concentration under the limit recommended by WHO for fluoride concentration in drinking water (1.5 mg/L) with lowest consumption of electricity.

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Section: +mentioning

confidence: 99%

Fluoride removal from synthetic groundwater by electrocoagulation process: parametric and energy evaluation

Chibani¹,

Barhoumi²,

Ncib³

et al. 2019

DWT

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“…Exceeded concentration of fluoride leads to many health issues -dental and skeleton fluorosis, neurological problems, lesions of the thyroid or cancer. In small amount fluorine is beneficial for human health -it is one of the main constituents of bones and tooth [2,5,7].…”

Section: Introductionmentioning

confidence: 99%

“…electrodialysis (ED), reverse osmosis (RO), nanofiltration (NF), Donnan dialysis (DD), electrocoagulation) [2,3,7,11,12]. Most of the conventional methods have disadvantages -the necessity of troublesome regeneration, low capacity and selectivity or high costs.…”

Section: Introductionmentioning

confidence: 99%

The use of electrodialysis with mono-anion permselective membranes for defluoridation

Grzegorzek

Majewska-Nowak

2018

E3S Web Conf.

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“…Various technologies have been applied for the purication of uoride contaminated water, such as coagulation-precipitation, 3 induced crystallization, 4 ion exchange, membrane ltration, 5 electro dialysis 6,7 and adsorption. 8 Among them, adsorption is the most widely used and preferred method owing to its simplicity of operation and the availability of a wide range of adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Development of Mg–Al–La tri-metal mixed oxide entrapped in alginate for removal of fluoride from wastewater

et al. 2017

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Comparison and understanding of fluoride removal mechanism in Ca2+, Mg2+ and Al3+ ion assisted electrocoagulation process using Fe and Al electrodes

Cited by 37 publications

References 36 publications

Fluoride removal from synthetic groundwater by electrocoagulation process: parametric and energy evaluation

Fluoride removal from synthetic groundwater by electrocoagulation process: parametric and energy evaluation

The use of electrodialysis with mono-anion permselective membranes for defluoridation

Development of Mg–Al–La tri-metal mixed oxide entrapped in alginate for removal of fluoride from wastewater

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