Étude des surfaces et calcul théorique des sites actifs de charbons actifs par adsorption de l'acide tartrique

Abstract

The theoretical calculation of the number of active sites of four activated carbon samples (2SAP/C, COM3, NC 35 and NCF O.5/2) during the adsorption of tartaric acid from solution has revealed that the number of accessible active sites on the surface increases with increased pH. It also appears that the number of active sites for the basic activated carbon (NC 35 and NCF 0.5/2) is greater than that of the acidic activated carbon (2 SAP/C and COM 3). The results obtained are in agreement with those obtained by Freundlich and Langmuir models such that the classification for the four samples is as follows: 2 SAP/C < COM 3 < NC 35 < COM 3 < NC 35