Document Type : Original Article
Authors
1
Basic Sciences Group, Golpayegan College of Engineering, Isfahan University of Technology, P.O. Box: 87717-67498, Golpayegan, Iran
2
Drug Delivery System Research Center, Tehran Medical Sciences, Islamic Azad University, P.O. Code: 1941933111, Tehran, Iran
3
Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Chemistry, Tehran Medical Sciences, Islamic Azad University, P.O. Code: 1913674711, Tehran, Iran
4
Department of Applied Chemistry, Faculty of Pharmaceutical Chemistry, Tehran Medical Sciences, Islamic Azad University, P.O. Code: 1913674711, Tehran, Iran
Abstract
This paper used three magnetic adsorbents, including polyaniline@NiFe2O4, polyaniline@MgFe2O4, and polyaniline@MnFe2O4 to remove congo red dye. The synthesized nanocomposites were identified using SEM, XRD, EDX, and FT-IR methods. Then the factors affecting the removal efficiency of congo red were optimized for all three adsorbents. Under optimum conditions, the removal efficiencies of congo red from aqueous media by polyaniline@NiFe2O4, polyaniline@MgFe2O4, and polyaniline@MnFe2O4 were calculated as 92, 90 and
89 %, respectively. The reusability of the used nanocomposites was investigated, so 1 M HCl as a recovery agent could recover up to 4 times all three nanocomposites. The synthesized sorbents performed the removal of congo red from real samples, including well water and dyeing wastewater. The results showed that the matrix does not significantly affect the efficiency of the nanocomposites so that they could be used in real samples with complex matrices.
Keywords
Main Subjects