Comparative Study on Adsorption Isotherm and Kinetics of Defluoridation Using Aluminum and Iron Electrodes in Electrocoagulation

Nyangi, Magori J.; Chebude, Yonas; Kilulya, Kessy F.; Salim, Catherine J.

doi:10.1007/s42250-021-00228-w

Cited by 8 publications

(2 citation statements)

References 20 publications

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“…For this reason, it is always found in a reduced form as fluoride or in various combined forms such as fluorspar (CaF 2 ), soloist (MgF 2 ), fluorapatite (3Ca 3 (PO 4 ) 2 CaF 2 ), and cryolite (Na 3 AlF 6 ) [1,2]. In different parts of the world, fluoride is significant as a considerable natural contaminant in drinking water [3]. The use of fluoride is varied such as in industry and agriculture.…”

Section: Introductionmentioning

confidence: 99%

Study of Modified Magnesium Phosphate Cement for Fluoride Removal

Gharsallah,

Mallah,

Alsawi

et al. 2023

Materials

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In this study, we used a novel composite material based on magnesium phosphate cement (MPC) to explore the retention of fluoride from used water. Dead-burned magnesium oxide (MgO), ammonium dihydrogen phosphate (NH4H2PO4), and a few retarders were used to create this particular substance. Several studies have corroborated the performance of using aluminum in the capture of fluoride. From this perspective, we attempted to reinforce our matrix with different quantities of aluminum, which increased the resistance of the composite in water. The optimal conditions that were obtained were evaluated and scrutinized using a range of techniques, including scanning electron microscopy (SEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transforms infrared spectroscopy (FTIR), and Brunauer–Emmett–Teller (BET). The adsorbents demonstrated a powerful ability to remove fluoride from contaminated water and the defluoridation capacity was evaluated at 4.84 mg/g. Equilibrium modeling was carried out, and the experimental data were expressed in accordance with the Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich isotherms.

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Section: Introductionmentioning

confidence: 99%

Study of Modified Magnesium Phosphate Cement for Fluoride Removal

Gharsallah,

Mallah,

Alsawi

et al. 2023

Materials

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show abstract

“…Al(OH)3 is more thermodynamic stable than Fe(OH)3 [16]. Compared to ferric hydroxide, Al(OH)3 has more residence time for flocculation [39]. Anode in EC-solution had no parasitic reactions (rather than formation of metal Higher %Re AgNPs indicated absence of anode polarization or cathode carbonation that decrease current efficiency [40].…”

Section: Quantitative Analysismentioning

confidence: 99%