Gliclazide Removal Efficiency of Carbon-Based Magnetic Materials: Isotherm and Kinetic Studies

摘要

Gliclazide, one of the micropollutants that can be detected in water, is widely used in the treatment of type II diabetes patients. In this study, the removal of gliclazide from aqueous solutions with magnetic carbon-based materials was investigated. Magnetic activated carbon (MAC) and magnetic multiwalled carbon nanotube (MMWCNT) adsorbents were prepared and characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and ther-mogravimetric analysis methods. The effects of various parameters affecting the adsorption process were examined. The adsorption systems were compatible with the Langmuir isotherm model and the pseudo-second-order kinetic model. The maximum monolayer adsorption capacities of the MAC adsorbent (298K) and the MMWCNT (308K) were 109.20 and 71.59 mg g~(-1), respectively. According to desorption studies, adsorbents could be regenerated by around 70 % in 6 hours.