Design and synthesis the magnetic nano-porous polymeric composite for the competitive adsorption of BTEX in the aqueous solutions
عنوان دوره: 1
1sahand university of technology
2Chemical Engineering Faculty, Sahand University of Technology, P.O. Box 51335-1996, Sahand New Town, Tabriz, Iran
3Analytical Chemistry Research Group, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
In the present study, magnetic polymeric nano-composite was synthesized as an efficient and low cost adsorbent for the simultaneous removal of BTEX as the petrochemical contaminants from the aqueous solutions. The various characterization techniques including XRD and VSM were studied on the prepared samples. The results of XRD analysis showed an appropriate dispersion of the magnetite crystallites on polymeric substrate. The VSM analysis also illustrated the proper magnetic strength of the synthesized adsorbent which was to be 23.26 emu/g. The results of competitive adsorption indicated that the prepared nano-composite had a remarkable adsorption capacity and the antonym effect of the simultaneous presence of BTEX on the synthesized nano-adsorbent was negligible. The kinetic behavior of the samples in the competitive adsorption was investigated by the various models including pseudo-first-order and pseudo-second-order. The results showed a good agreement between the experimental data and the pseudo second equation. The maximum adsorption capacity of carbonaceous nano-composite was calculated to be 4.8309, 8, 9 and 9.1743 mg/g by employing Langmuir isotherm for benzene, toluene, ethylbenzene and xylene, respectively.
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