Adsorption of atrazine (ATZ) from aqueous solutions by granular activated carbon (GAC) and carbon nanotubes (CNT) was studied in a batch-mode adsorption system at different initial concentrations of ATZ (1.0-30.0 mg L -1 ) and at three temperatures of 288, 296 and 304 K. The adsorption isotherms of Langmuir, Freundlich, Polanyi-Manes, and Brunauer-Emmett-Teller (modified) were used to model the process. The adsorption kinetics followed a pseudo-second-order kinetic model. The thermodynamic parameters DH 0 , DS 0 , and DG 0 of the adsorption were estimated. The thermodynamic parameters indicate that the adsorption process is spontaneous and exothermic.
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