الفهرس | Only 14 pages are availabe for public view |
Abstract This study aimed to create activated carbon thin film (ACTF) as a hybrid nanocarbon via a simple and efficient method through a single-step mixing process using thermal functionalization techniques. Then, magnetite and nanoscale zerovalent iron (Fe0/Fe3O4) nanoparticles were synthesized by co-precipitation and chemical reduction methods, respectively within the matrices of the prepared ACTF to produce ACTF/Fe0/Fe3O4 nanocomposite (MACTF) in three different proportions of Fe0/Fe3O4, producing MACTF-1, MACTF-2, and MACTF-3. XRD, TEM, FTIR, Raman, BET, BJH, and TGA analyses were used to characterize the ACTF, and MACTF nanocomposites. from the characterization results, the synthesized ACTF and MACTF-1 were used as adsorbents for the removal of Phenol (Ph) and p-nitrophenol (PNP) from aqueous solution. The ability of ACTF and MACTF-1 to remove Ph and PNP was investigated by batch experiments according to various parameters. It was found that MACTF-1 can significantly increase the removal efficiency of Ph and PNP compared to the pristine ACTF and a synergetic effect occurred between ACTF and Fe0/Fe3O4 for Ph and PNP removal. The adsorption kinetics, isotherm and thermodynamics also have been evaluated. The studies on the adsorption revealed that the adsorption process obeyed the Pseudo-second order kinetics model, and the rate-limiting step might be chemical sorption. And the Freundlich isotherm was applicable to describe the adsorption process. Moreover, Thermodynamic parameters indicated that the adsorption process was exothermic and spontaneous. Reusability of the prepared ACTF and MACTF-1 in the adsorption–desorption process were simply done for successive 5 times, and for MACTF-1 could be easily removed from solution using a hand-held magnet in short time. Furthermore, ACTF and MACTF-1 exhibited effective implementation to remove phenol with other various pollutants with high concentration from real water samples. This study confirmed the successful application of ACTF and MACTF-1 as an efficient, eco-friendly, and sustainable adsorbent at a high level of feasibility for the uptake of hazardous contaminants from industrial wastewater. |