Vermiculite enriched by Fe(III) oxides as a novel adsorbent for toxic metals removal
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Bugarčić, Mladen
Lopičić, Zorica

Šoštarić, Tatjana

Marinković, Aleksandar D.

Rusmirović, Jelena D.

Milošević, Dragana

Milivojević, Milan
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Expanded vermiculite (EV) was modified by deposition of different spinel ferrite composites on the outer surface of EV 2:1 layers in order to improve its adsorptive properties. Modifications were made by deposition of: magnetite, manganese ferrite, cobalt ferrite and chromium oxide/hematite. The characterization of modified materials was performed by: scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) methodology, X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), magnetization measurements, as well as determination of cation exchange capacity (CEC) and pH point of zero charge (pHPZC). Obtained samples were used as adsorbents for Pb2+, Ni(2+)and Cd2+ ions from an aqueous solution in a batch system. Results showed that adsorption capacity was strongly dependent on physical and chemical changes induced by specific chemical modification. Hydrothermally produced manganese and cobalt ferrites caused significant surface changes and altered the interlayer c...ation balance. Among the others, EV-Mn/Co-ferrite(s) samples possessed the highest adsorption capacity towards Ni2+ (33.06 mg g(-1)), along with an increase of the CEC. Freundlich's adsorption isotherm model provided the best fit of obtained experimental data, while kinetic studies showed that the adsorption rate follows the pseudo second-order model, implying heterogeneous adsorbents surface. Thermodynamic and kinetic parameters indicated that the mechanism of cations removal efficacy was dominantly followed by the ion exchange. This study confirmed that doped ferrites, produced by solvothermal method, improve surface properties of EV and increase adsorption potentials towards heavy metals.
Keywords:
Heavy metals / Ferrite deposition / Expanded vermiculite / Adsorbent separationSource:
Journal of Environmental Chemical Engineering, 2021, 9, 5Publisher:
- Elsevier Sci Ltd, Oxford
Funding / projects:
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200023 (Institute of Technology of Nuclear and Other Mineral Row Materials - ITNMS, Belgrade) (RS-200023)
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200325 (Military Technical Institute - MTI, Belgrade) (RS-200325)
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200135 (University of Belgrade, Faculty of Technology and Metallurgy) (RS-200135)
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-200026)
DOI: 10.1016/j.jece.2021.106020
ISSN: 2213-2929
WoS: 000703865500008
Scopus: 2-s2.0-85110116108
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Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - JOUR AU - Bugarčić, Mladen AU - Lopičić, Zorica AU - Šoštarić, Tatjana AU - Marinković, Aleksandar D. AU - Rusmirović, Jelena D. AU - Milošević, Dragana AU - Milivojević, Milan PY - 2021 UR - https://ritnms.itnms.ac.rs/handle/123456789/570 AB - Expanded vermiculite (EV) was modified by deposition of different spinel ferrite composites on the outer surface of EV 2:1 layers in order to improve its adsorptive properties. Modifications were made by deposition of: magnetite, manganese ferrite, cobalt ferrite and chromium oxide/hematite. The characterization of modified materials was performed by: scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) methodology, X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), magnetization measurements, as well as determination of cation exchange capacity (CEC) and pH point of zero charge (pHPZC). Obtained samples were used as adsorbents for Pb2+, Ni(2+)and Cd2+ ions from an aqueous solution in a batch system. Results showed that adsorption capacity was strongly dependent on physical and chemical changes induced by specific chemical modification. Hydrothermally produced manganese and cobalt ferrites caused significant surface changes and altered the interlayer cation balance. Among the others, EV-Mn/Co-ferrite(s) samples possessed the highest adsorption capacity towards Ni2+ (33.06 mg g(-1)), along with an increase of the CEC. Freundlich's adsorption isotherm model provided the best fit of obtained experimental data, while kinetic studies showed that the adsorption rate follows the pseudo second-order model, implying heterogeneous adsorbents surface. Thermodynamic and kinetic parameters indicated that the mechanism of cations removal efficacy was dominantly followed by the ion exchange. This study confirmed that doped ferrites, produced by solvothermal method, improve surface properties of EV and increase adsorption potentials towards heavy metals. PB - Elsevier Sci Ltd, Oxford T2 - Journal of Environmental Chemical Engineering T1 - Vermiculite enriched by Fe(III) oxides as a novel adsorbent for toxic metals removal IS - 5 VL - 9 DO - 10.1016/j.jece.2021.106020 UR - conv_919 ER -
@article{ author = "Bugarčić, Mladen and Lopičić, Zorica and Šoštarić, Tatjana and Marinković, Aleksandar D. and Rusmirović, Jelena D. and Milošević, Dragana and Milivojević, Milan", year = "2021", abstract = "Expanded vermiculite (EV) was modified by deposition of different spinel ferrite composites on the outer surface of EV 2:1 layers in order to improve its adsorptive properties. Modifications were made by deposition of: magnetite, manganese ferrite, cobalt ferrite and chromium oxide/hematite. The characterization of modified materials was performed by: scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) methodology, X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), magnetization measurements, as well as determination of cation exchange capacity (CEC) and pH point of zero charge (pHPZC). Obtained samples were used as adsorbents for Pb2+, Ni(2+)and Cd2+ ions from an aqueous solution in a batch system. Results showed that adsorption capacity was strongly dependent on physical and chemical changes induced by specific chemical modification. Hydrothermally produced manganese and cobalt ferrites caused significant surface changes and altered the interlayer cation balance. Among the others, EV-Mn/Co-ferrite(s) samples possessed the highest adsorption capacity towards Ni2+ (33.06 mg g(-1)), along with an increase of the CEC. Freundlich's adsorption isotherm model provided the best fit of obtained experimental data, while kinetic studies showed that the adsorption rate follows the pseudo second-order model, implying heterogeneous adsorbents surface. Thermodynamic and kinetic parameters indicated that the mechanism of cations removal efficacy was dominantly followed by the ion exchange. This study confirmed that doped ferrites, produced by solvothermal method, improve surface properties of EV and increase adsorption potentials towards heavy metals.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Journal of Environmental Chemical Engineering", title = "Vermiculite enriched by Fe(III) oxides as a novel adsorbent for toxic metals removal", number = "5", volume = "9", doi = "10.1016/j.jece.2021.106020", url = "conv_919" }
Bugarčić, M., Lopičić, Z., Šoštarić, T., Marinković, A. D., Rusmirović, J. D., Milošević, D.,& Milivojević, M.. (2021). Vermiculite enriched by Fe(III) oxides as a novel adsorbent for toxic metals removal. in Journal of Environmental Chemical Engineering Elsevier Sci Ltd, Oxford., 9(5). https://doi.org/10.1016/j.jece.2021.106020 conv_919
Bugarčić M, Lopičić Z, Šoštarić T, Marinković AD, Rusmirović JD, Milošević D, Milivojević M. Vermiculite enriched by Fe(III) oxides as a novel adsorbent for toxic metals removal. in Journal of Environmental Chemical Engineering. 2021;9(5). doi:10.1016/j.jece.2021.106020 conv_919 .
Bugarčić, Mladen, Lopičić, Zorica, Šoštarić, Tatjana, Marinković, Aleksandar D., Rusmirović, Jelena D., Milošević, Dragana, Milivojević, Milan, "Vermiculite enriched by Fe(III) oxides as a novel adsorbent for toxic metals removal" in Journal of Environmental Chemical Engineering, 9, no. 5 (2021), https://doi.org/10.1016/j.jece.2021.106020 ., conv_919 .