Isotherm and Kinetic Evaluation of Acid Blue 80 Dye Adsorption on Surfactant-modified Bentonite

Equilibrium, Isotherm and Kinetic Adsorption Studies of Direct Blue 71 onto Raw Kaolin

“…Moreover, the pseudo-second-order kinetic model describes adsorption as purely physical in nature as supported by physical interaction between DB71 and FK. Both the kinetic models do not recognize the diffusion mechanism; hence, kinetic results were evaluated with diffusion models [26]: qt = Kd t 0.5 + C…”

“…It was observed from Figure 5 that the dye percentage removal decreased with increasing the particle size of the adsorbent. The decrease in particle size led to an increase of available active sites on the surface of the adsorbent and, consequently, an increase in the adsorption process on the RK surface due to the high surface area [26,27]. Furthermore, the diffusional resistance to mass transfer increased by increasing particle size the beginning of adsorption [23].…”

Synthesis of Graphene Oxide as an Adsorbent for the Removal of Bisphenol A

“…Where AT is the binding constant of the equilibrium (l/g) identical to the extreme binding energy, bT is the Temkin isotherm constant regarding the adsorption heat (J/mol), R shows the universal gas constant (8.314 J/mol K), and T represents the absolute temperature (K). Therefore, equation 11 could be proposed in the linear form, as follows [30]:…”

Adsorption of Catechol from Aqueous Solutions Using Graphene Oxide

“…In the current research, Temkin model was tested for equilibrium description at room temperature, and the model is presented in Equation 8, as follows [30].…”

“…where B is the Temkin constant related to the sorption heat (J/mol), KT shows the Temkin isotherm constant (l/g), R represents the gas constant (8.314 J/mol K), b is the Temkin isotherm constant, and T is the temperature (K) [30].…”