Phenylamine and Phenylamide -Functionalized Silica (SiBN and SiBCON) for the Removal of Carbamazepine from Wastewater
Date
2021-06-08
Authors
عقل, إسراء مروان محمود
Journal Title
Journal ISSN
Volume Title
Publisher
An-Najah National University
Abstract
The study aims to remove Carbamazepine from aqueous solutions, through the use of functional silica phenylamine (SiBN), which is characterized by its excellent chemical stability and thermal stability. As silica aroused great interest, adsorbents based on it were prepared due to their unique large surface area, uniform pore structure, and well-modified surface properties. It was decided to prepare a new silica adsorbent with phenylamine with amide (SiBCON).
The adsorbent obtained were analyzed by various spectroscopy devices, including Fourier Transform Infrared Spectroscopy (FT-IR), Thermogravimetric Analysis (TGA), and Scanning Electron Microscopy (SEM). As a practical test application for prepared adsorbent.
Then analyzes were performed with High Performance Liquid Chromatography (HPLC) instrument to calculate the amount remaining in the solution after the adsorption process. The results obtained proved that the removal efficiency of Carbamazepine was very good. The maximum removal rates were 98.37% for SiBN and 98.22% for SiBCON.
The (SiBN) (SiBCON) adsorption efficiency of Carbamazepine was evaluated, and the adsorbents showed excellent removal efficacy of Carbamazepine, with the optimum condition being found: (1) room temperature, (2) pH 9.0, (3) 10.0 ppm initial concentration and (4) contact time 15 min.
Isometric analysis showed that the adsorption of Carbamazepine on SiBN and SiBCON correlated with Langmuir uptake. But thermodynamic analysis showed that the uptake of Carbamazepine on SiBN and SiBCON is negative free energy.
Regeneration of SiBN and SiBCON can be done by treatment with 0.1N HCL so it can be used repeatedly.
In the end, I recommend providing water filters made of two adsorbent materials (SiBN and SiBCON) in different sizes and shapes at an affordable price to remove of carbamazepine for a percentage exceeding more than 9