Influence of the Type and the Amount of Surfactant in Phillipsite on Adsorption of Diclofenac Sodium

Modified phillipsite samples were prepared with two different amounts (monolayer and bilayer coverage) of surfactants octadecyldimethylbenzylammonium chloride (O) dodecylamine (D). Composites characterized by Fourier transform infrared spectroscopy attenuated total reflectance (FTIR–ATR), thermal analysis determination zeta potential, subsequently tested for removal diclofenac sodium (DCF). Drug adsorption experiments performed under initial DCF concentrations contact times. In order to investigate the influence chemical structure used modification on preparation properties composites adsorption, experimental data compared previously published results containing same cetylpyridinium (C) Arquad®2HT-75 (A). isotherms O D showed a better fit Langmuir model maximum capacities between 12.3 38.4 mg/g are similar those C A composites, while kinetics run followed pseudo-second-order model. either benzyl or pyridine functional groups higher DCF, implying that surfactant has significant impact drug adsorption. onto O, D, was also confirmed FTIR–ATR potential measurements.