Xerogel of fast kinetics and high adsorption capacity for cationic dye removal

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Sigma Mühendislik ve Fen Bilimleri Dergisi
Volume:42 Issue:1
Xerogel of fast kinetics and high adsorption capacity for cationic dye removal

Xerogel of fast kinetics and high adsorption capacity for cationic dye removal

Authors : Deniz Sezgin, Müge Sarı Yılmaz

Pages : 189-197

View : 36 | Download : 38

Publication Date : 2024-02-27

Article Type : Research Paper

Abstract :Silica-based xerogel was prepared by the two-step sol-gel method to investigate its methylene blue removal performance. The characteristics of the prepared adsorbent were determined using X-ray diffraction (XRD), Fourier transforms infrared (FTIR), scanning electron micros- copy (SEM), and N2 adsorption/desorption analyses. The MB removal studies were conducted with different operating parameters and optimal conditions were found to be 0.06 g adsor-bent dosage, and 20 mg.L-1 initial MB concentration at 45 min. The Langmuir isotherm best represents the MB adsorption equilibrium data and the high maximum adsorption capacity was achieved with 1666.67 mg.g-1. The kinetic mechanism of the study is defined by the pseu-do-second-order kinetic model. Additionally, the adsorption of MB on xerogel exhibited fast kinetics, reaching a high removal capacity (96.56%) in a minute.
Keywords : Xerogel, Fast Kinetics, High Capacity, Adsorption, Cationic Dye

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