Adsorption equilibrium modeling and solution chemistry dependence of fluoride removal from water by trivalent-cation-exchanged zeolite F-9

Anionic and Cationic Dyes Removal from Aqueous Solutions by Adsorption onto Synthetic Mg/Al Hydrotalcite-Like Compound

“…The non-linearized and linearized form of Freundlich isotherm model is given as the following equation [25]:…”

Functionalized dithiocarbamate chelating resin for the removal of Co2+ from simulated wastewater

“…Both parameters, together with the thereafter calculated mean energies of adsorption, are presented in Table 2. It is said that when the value of E a is in the range of 1-8 kJ mol -1 , it corresponds to a process dominated by physical adsorption; in the range of 8-16 kJ mol -1 (Onyango et al 2004;Helfferich 1962), it corresponds to a process dominated by an ion-exchange mechanism. In Table 2, E a values were higher than 16 kJ mol -1 at 293.15 and 303.15 K, which indicates that neither physical adsorption nor an ion-exchange mechanism is the dominant factor, and another mechanism with an even stronger effect on the adsorption should be accounted for.…”

A New Low Cost Biosorbent for a Cationic Dye Treatment

“…Effect of pH on adsorption process: In general, initial pH value may enhance or depress the uptake of solute. ThepH of adsorption medium influences not only the surface charge of adsorbent, but also, the degree of ionization of the material present in the solution and the dissociation of functional groups on the active sites of the adsorbent and the solution dye chemistry [5].The effect of pH on MBremoval was analyzed over the pH range from 2-12. The pH was adjusted using 0.1 N (NaOH) or 0.1 N (HCl) solutions.…”