Recovery of Vanadium (V) Oxyanions by a Magnetic Macroporous Copolymer Nanocomposite Sorbent

An amino-functionalized magnetic macroporous copolymer of glycidyl methacrylate (GM) and ethylene glycol (E) dimethacrylate (m-poly(GME)-deta) was synthesized, fully characterized, and used to investigate the adsorption of vanadium (V) oxyanions from aqueous solutions (Ci = 0.5 mM) in a batch system...

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Autores principales: Ljiljana Suručić, Tamara Tadić, Goran Janjić, Bojana Marković, Aleksandra Nastasović, Antonije Onjia
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:75c8c29f2df24358974c4384dc7e0fb62021-11-25T18:21:51ZRecovery of Vanadium (V) Oxyanions by a Magnetic Macroporous Copolymer Nanocomposite Sorbent10.3390/met111117772075-4701https://doaj.org/article/75c8c29f2df24358974c4384dc7e0fb62021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1777https://doaj.org/toc/2075-4701An amino-functionalized magnetic macroporous copolymer of glycidyl methacrylate (GM) and ethylene glycol (E) dimethacrylate (m-poly(GME)-deta) was synthesized, fully characterized, and used to investigate the adsorption of vanadium (V) oxyanions from aqueous solutions (Ci = 0.5 mM) in a batch system at room temperature (298 K). Pseudo-first-order (PFO), pseudo-second-order (PSO), Elovich, and intra-particle diffusion (IPD) models were used to analyze the kinetic data. The study showed that sorption is rapid, i.e., the sorption half-time is approximately one minute. Initially, the sorption process primarily involved surface sorbent particles, and it was best described by the PSO model. However, after saturation of the surface active sites is attained, the sorption rate decreases significantly because of limitations of the diffusion rate, which is then primarily controlled by the IPD process. The sorption process is favorable in the pH range of 3–6 due to the strong electrostatic interactions between the absorption centers of copolymer and vanadium (V) oxyanions. In the stated pH range, deta absorption centers with two and three protonated N atoms are in equilibrium as studied by quantum chemical modeling. Among V(V) species present in diluted aqueous media, the adsorption of H<sub>2</sub>VO<sub>4</sub><sup>−</sup> ions dominates.Ljiljana SuručićTamara TadićGoran JanjićBojana MarkovićAleksandra NastasovićAntonije OnjiaMDPI AGarticleglycidyl methacrylatequantum chemical modelingEh–pHsilanizationadsorptionvanadateMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1777, p 1777 (2021)
institution DOAJ
collection DOAJ
language EN
topic glycidyl methacrylate
quantum chemical modeling
Eh–pH
silanization
adsorption
vanadate
Mining engineering. Metallurgy
TN1-997
spellingShingle glycidyl methacrylate
quantum chemical modeling
Eh–pH
silanization
adsorption
vanadate
Mining engineering. Metallurgy
TN1-997
Ljiljana Suručić
Tamara Tadić
Goran Janjić
Bojana Marković
Aleksandra Nastasović
Antonije Onjia
Recovery of Vanadium (V) Oxyanions by a Magnetic Macroporous Copolymer Nanocomposite Sorbent
description An amino-functionalized magnetic macroporous copolymer of glycidyl methacrylate (GM) and ethylene glycol (E) dimethacrylate (m-poly(GME)-deta) was synthesized, fully characterized, and used to investigate the adsorption of vanadium (V) oxyanions from aqueous solutions (Ci = 0.5 mM) in a batch system at room temperature (298 K). Pseudo-first-order (PFO), pseudo-second-order (PSO), Elovich, and intra-particle diffusion (IPD) models were used to analyze the kinetic data. The study showed that sorption is rapid, i.e., the sorption half-time is approximately one minute. Initially, the sorption process primarily involved surface sorbent particles, and it was best described by the PSO model. However, after saturation of the surface active sites is attained, the sorption rate decreases significantly because of limitations of the diffusion rate, which is then primarily controlled by the IPD process. The sorption process is favorable in the pH range of 3–6 due to the strong electrostatic interactions between the absorption centers of copolymer and vanadium (V) oxyanions. In the stated pH range, deta absorption centers with two and three protonated N atoms are in equilibrium as studied by quantum chemical modeling. Among V(V) species present in diluted aqueous media, the adsorption of H<sub>2</sub>VO<sub>4</sub><sup>−</sup> ions dominates.
format article
author Ljiljana Suručić
Tamara Tadić
Goran Janjić
Bojana Marković
Aleksandra Nastasović
Antonije Onjia
author_facet Ljiljana Suručić
Tamara Tadić
Goran Janjić
Bojana Marković
Aleksandra Nastasović
Antonije Onjia
author_sort Ljiljana Suručić
title Recovery of Vanadium (V) Oxyanions by a Magnetic Macroporous Copolymer Nanocomposite Sorbent
title_short Recovery of Vanadium (V) Oxyanions by a Magnetic Macroporous Copolymer Nanocomposite Sorbent
title_full Recovery of Vanadium (V) Oxyanions by a Magnetic Macroporous Copolymer Nanocomposite Sorbent
title_fullStr Recovery of Vanadium (V) Oxyanions by a Magnetic Macroporous Copolymer Nanocomposite Sorbent
title_full_unstemmed Recovery of Vanadium (V) Oxyanions by a Magnetic Macroporous Copolymer Nanocomposite Sorbent
title_sort recovery of vanadium (v) oxyanions by a magnetic macroporous copolymer nanocomposite sorbent
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/75c8c29f2df24358974c4384dc7e0fb6
work_keys_str_mv AT ljiljanasurucic recoveryofvanadiumvoxyanionsbyamagneticmacroporouscopolymernanocompositesorbent
AT tamaratadic recoveryofvanadiumvoxyanionsbyamagneticmacroporouscopolymernanocompositesorbent
AT goranjanjic recoveryofvanadiumvoxyanionsbyamagneticmacroporouscopolymernanocompositesorbent
AT bojanamarkovic recoveryofvanadiumvoxyanionsbyamagneticmacroporouscopolymernanocompositesorbent
AT aleksandranastasovic recoveryofvanadiumvoxyanionsbyamagneticmacroporouscopolymernanocompositesorbent
AT antonijeonjia recoveryofvanadiumvoxyanionsbyamagneticmacroporouscopolymernanocompositesorbent
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