Removal of Pemetrexed from aqueous phase using activated carbons in static mode

Three activated carbons (ACs) obtained from wood and either by steam (AC1) or phosphoric acid (AC2, AC3) were characterized via nitrogen adsorption–desorption isotherms, zeta potentials, infrared Raman spectroscopy, as well their chemical analysis was determined. Adsorption experiments with Pemetrexed (PEME), a pharmaceutical used for the treatment of tumors, carried out in which adsorbent doses, contact times, temperatures, solution pH investigated. Correlation between physicochemical properties ACs adsorption capacity proposed. According to results, it found that AC1 AC3 better described Freundlich Langmuir models, respectively, whereas both models could be fit adsorptive isotherm AC2. The higher initial PEME concentration temperature, was. capacities adsorbents following order, > AC2 AC1, agreement specific surface areas. A coexistence process physical existed all predicted best fitting Dubinin–Radushkevich, pseudo–second–order kinetic Elovich models. mechanisms researched using Conductor–like Screening Model methodology determine proton donor acceptor centres PEME. As main conclusion, supported DRIFTS O/C ratios, containing more oxygenated groups, must adsorb onto according monolayer mechanism. Fitting procedure demonstrated equilibrium data these two materials can fitted isotherm.