TY  - JOUR
AU  - Suručić, Ljiljana
AU  - Janjić, Goran
AU  - Marković, Bojana
AU  - Tadić, Tamara
AU  - Vuković, Zorica
AU  - Nastasović, Aleksandra
AU  - Onjia, Antonije
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6329
AB  - A new magnetic amino-functionalized polymeric sorbent based on glycidyl methacrylate was synthesized and used in the separation of chromium Cr(VI) oxyanions sorption from aqueous solutions in a static batch system. The kinetic and isothermal parameters of the sorption process were determined. The experimental data were best fitted by a pseudo-second-order model with R2 = 0.994 and χ2 = 0.004. The sorption process of Cr(VI) removal by amino-functionalized sorbent was controlled by both intraparticle diffusion and liquid film diffusion. The equilibrium results showed that the sorption process is best described by the Freundlich model, followed closely by the Sips isotherm model, with a maximum sorption capacity of 64 mg/g. Quantum chemical modeling revealed that the sorption sites on the sorbent surface are fragments with diethylenetriamine and aminopropyl silane groups that coated the magnetic nanoparticles. The calculations showed that Cr(VI) oxyanions (Cr2O72−, CrO42− and HCrO4−) bind to both sorption sites, with diethylenetriamine centers slightly favored. The X-ray photoelectron spectroscopy (XPS) spectra demonstrate that the chromium bound to the sorbent in the form of Cr(III), indicating that the Cr(VI) can be converted on the surface of the sorbent to a less harmful form Cr(III) due to the sorbent’s chemical composition.
PB  - Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)
T2  - Materials
T1  - Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite
VL  - 16
IS  - 6
SP  - 2233
DO  - 10.3390/ma16062233
ER  - 

@article{
author = "Suručić, Ljiljana and Janjić, Goran and Marković, Bojana and Tadić, Tamara and Vuković, Zorica and Nastasović, Aleksandra and Onjia, Antonije",
year = "2023",
abstract = "A new magnetic amino-functionalized polymeric sorbent based on glycidyl methacrylate was synthesized and used in the separation of chromium Cr(VI) oxyanions sorption from aqueous solutions in a static batch system. The kinetic and isothermal parameters of the sorption process were determined. The experimental data were best fitted by a pseudo-second-order model with R2 = 0.994 and χ2 = 0.004. The sorption process of Cr(VI) removal by amino-functionalized sorbent was controlled by both intraparticle diffusion and liquid film diffusion. The equilibrium results showed that the sorption process is best described by the Freundlich model, followed closely by the Sips isotherm model, with a maximum sorption capacity of 64 mg/g. Quantum chemical modeling revealed that the sorption sites on the sorbent surface are fragments with diethylenetriamine and aminopropyl silane groups that coated the magnetic nanoparticles. The calculations showed that Cr(VI) oxyanions (Cr2O72−, CrO42− and HCrO4−) bind to both sorption sites, with diethylenetriamine centers slightly favored. The X-ray photoelectron spectroscopy (XPS) spectra demonstrate that the chromium bound to the sorbent in the form of Cr(III), indicating that the Cr(VI) can be converted on the surface of the sorbent to a less harmful form Cr(III) due to the sorbent’s chemical composition.",
publisher = "Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "Materials",
title = "Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite",
volume = "16",
number = "6",
pages = "2233",
doi = "10.3390/ma16062233"
}

Suručić, L., Janjić, G., Marković, B., Tadić, T., Vuković, Z., Nastasović, A.,& Onjia, A.. (2023). Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite. in Materials
Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)., 16(6), 2233.
https://doi.org/10.3390/ma16062233

Suručić L, Janjić G, Marković B, Tadić T, Vuković Z, Nastasović A, Onjia A. Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite. in Materials. 2023;16(6):2233.
doi:10.3390/ma16062233 .

Suručić, Ljiljana, Janjić, Goran, Marković, Bojana, Tadić, Tamara, Vuković, Zorica, Nastasović, Aleksandra, Onjia, Antonije, "Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite" in Materials, 16, no. 6 (2023):2233,
https://doi.org/10.3390/ma16062233 . .