Amino-functionalized MIL-88B(Fe)-based porous carbon for enhanced adsorption toward ciprofloxacin pharmaceutical from aquatic solutions

Publication date: Available online 7 October 2019Source: Comptes Rendus ChimieAuthor(s): Thuan Van Tran, Duyen Thi Cam Nguyen, Hanh Thi Ngoc Le, Dai-Viet N. Vo, Van-Dat Doan, Van-Phuc Dinh, Hong-Tham Thi Nguyen, Trinh Duy Nguyen, Long Giang BachAbstractThe present study focused on the synthesis of novel NH2-PC700 adsorbent through the pyrolysis of NH2-MIL-88B (Fe) material under different pyrolysis temperatures (500, 700, and 900 °C) and investigated its application for ciprofloxacin adsorption. The obtained adsorbents were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and nitrogen adsorption/desorption isotherm measurements. The parameters of the adsorption experiments that affect the removal efficiency, including solution pH (3–10), contact time (0–240 min), and initial concentration (10–40 mg/L), were also studied in detail. For the adsorption kinetic and isotherm studies, nonlinear models combined with error functions such as adjusted coefficient of determination (Radj2), mean relative error (MRE), and squares of the errors (SSE) were used to evaluate the compatibility between kinetic models (pseudo-first-order, pseudo-second-order, Elovich, and Bangham) and isotherm (Langmuir, Freundlich, Temkin, and Dubinin–Radushkevitch) adsorption equations. Besides, the role of amino functionalization for the ciprofloxacin (CFX) adsorption of NH2-PC700 adsorbent was also explained. Through the Langmuir model, the maximum CFX adsorpt...
Source: Comptes Rendus Chimie - Category: Chemistry Source Type: research