Adsorption of fluoride onto crystalline titanium dioxide: Effect of pH, ionic strength, and co-existing ions

A Comparative Study on Removal of Hazardous Anions from Water by Adsorption: A Review

“…Also, the formation of insoluble CaF 2 and MgF 2 was the reason for the increase of adsorption by granular ceramic at 200 mg/L and Ca 2+ and Mg 2+ concentration [40]; however, Mn 2+ and Fe 3+ at 200 mg/L were reported to decrease fluoride removal capacity up to 10% on nano magnesia [62]. Babaeivelni and Khodadoust [68] reported that the effects of calcium and magnesium ions on fluoride removal onto crystalline titanium dioxide were insignificant.…”

Fluoride removal in water by a hybrid adsorbent lanthanum–carbon

“…Fluoride adsorption experiments were also performed at different pH range (4)(5)(6)(7)(8)(9)(10), to explore GAC-La0.05 behavior in the pH of natural (pH 6-8) and industrial waters. Fig.…”

“…Different sorbents have been used for water defluoridation such as activated alumina [20], zirconium(IV) [3,14], titanium(IV) [6], activated carbon [1] and rare oxides.…”

Insight into mechanisms of fluoride removal from contaminated groundwater using lanthanum-modified bone waste

“…3 As an essential micronutrient of the human body, whether uoride in drinking water is benecial to human health depends on its concentration and the duration of continuous uptake. 4 Low concentrations of uoride in drinking water can prevent dental caries and facilitate the mineralization of hard tissues, 5 while high concentrations of uoride can contribute to various physical disorders, including dental and skeletal uorosis, infertility, brain damage and thyroid disorder. 6 It is estimated that more than 200 million people worldwide rely on drinking water with a uoride concentration that exceeds 1.5 mg L À1 (ref.…”