The model and mechanism of adsorptive technologies for wastewater containing fluoride: A review

Potent and Versatile Biogenically Synthesized Alumina/Nickel Oxide Nanocomposite Adsorbent for Defluoridation of Drinking Water

“…As fluoride concentration rises, so does competition for active adsorption sites, and the adsorption process slows. 62 The adsorption capability of alumina/NiO NCS is greater than that of alumina NPs or NiO NPs. This is because alumina/NiO NCs have a surface area/volume ratio that is higher than that of individual NPs.…”

“…According to reports, the adsorption rate is quick initially and subsequently slows down as the fluoride concentration increases. As fluoride concentration rises, so does competition for active adsorption sites, and the adsorption process slows . The adsorption capability of alumina/NiO NCS is greater than that of alumina NPs or NiO NPs.…”

Portable hydroxyl-functionalized coal gangue-based cordierite porous ceramics sheets for effective adsorption of fluorine-containing wastewater

“…The results of these simulations are presented in Fig. 6(d), (e), and (f) respectively, and are based on the corresponding linear equations shown in eqn (8) , 44 (9) 45 and (10) 46 respectively. where q e (mg g −1 ) represents the amount of adsorbed fluorine at the adsorption equilibrium stage, q t (mg g −1 ) refers to the amount of adsorbed fluorine at a specific time, t (min) is the time, k 1 (min −1 ), k 2 (g mg −1 min −1 ) are the pseudo-first-order and pseudo-second-order adsorption rate constants respectively.…”