Akademik Veri Yönetim Sistemi
Biomass Conversion and Biorefinery, cilt.14, ss.31643-31652, 2024 (SCI-Expanded, Scopus)
H-MCM-22 zeolites were synthesized, characterized, and applied as adsorbent for the removal of an emerging contaminant. The zeolites were synthesized with different Si/Al2O3 ratios of 25, 50, and 100 by using the hydrothermal method and hexamethylene imine as a structure-directing agent. They were characterized by using X-ray diffraction, N2 adsorption–desorption, and Inductively coupled plasma-mass spectrometry analysis, repsectively. Their perfomances on the removal of diclofenac (DIC) were investigated in terms of kinetic, equilibrium, and thermodynamics. Approximately 80% of DIC removal was detected. H-MCM-22 zeolite with the highest Si level showed the best compatibility with the kinetic models (pseudo-first-order kinetic model, pseudo-second-order kinetic model, and intraparticle diffusion kinetic model) and the equilibrium models (Langmuir, Freundlich, and Temkin models). Thermodynamic study denoted to exothermic and spontaneous nature for DIC/H-MCM-22 zeolite adsorption systems. After H-MCM-22 zeolites were synthesized, they were used in the adsorption of DIC from aqueous solutions for the first time in the literature. Considering the poor literature related to adsorption studies, this study will provide significant findings to removal of emerging contaminants by MCM-22 zeolites. Graphical Abstract: [Figure not available: see fulltext.]