Preparation and characterization of zinc-exchanged montmorillonite and its effectiveness as aflatoxin B-1 adsorbent
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2012
Authors
Daković, Aleksandra
Kragović, Milan

Rottinghaus, George E.
Ledoux, David R.
Butkeraitis, Paula
Vojislavljević, Dubravka Z.

Zarić, Snežana

Stamenić, Ljubišav
Article (Published version)

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A zinc-exchanged montmorillonite (Zn-MONT) was prepared from a natural montmorillonite (MONT) and the adsorption of aflatoxin B-1 (AFB(1)) was investigated at pH 3 and 7. Characterization of Zn-MONT was done by determination of chemical composition, the point of the zero charge (pH(pzc)), thermal (DTA/TGA/DTG) and X-ray powder diffraction (XRPD) analysis. Adsorption of AFB(1) (C-0 = 4 ppm) by Zn-MONT, at different solid/liquid ratios (10, 1 and 0.5 g L-1), at pH 3 or 7, showed that its adsorption was high (over 96%) and independent of pH, similar to MONT. No desorption of AFB(1) from MONT-AFB(1) and Zn-MONT-AFB(1) complexes occurred at pH 6.5, suggesting strong binding of AFB(1) by both adsorbents. Furthermore, AFB(1) adsorption by Zn-MONT followed a nonlinear (Langmuir) type of isotherm at pH 3 with a calculated maximum capacity of 60.17 mg g(-1). The stability of MONT-AFB(1) and Zn-MONT-AFB(1) complexes was evaluated by calculating the binding energies between AFB(1) and metal cation...s using quantum chemical methods. The evaluated interaction energies of AFB(1) with hydrated Zn2+, Mg2+, and Ca2+ cations showed that the strongest interaction was the interaction of the Zn2+ system, -70.2 kcal mol(-1), whereas energies for Mg-2 and Ca2+ systems were -68.8 and -62.9 kcal mol(-1), respectively. The results indicate that Zn-MONT can be suitable for potential practical application as both, an antibacterial and an aflatoxin binding agent.
Keywords:
Desorption / Composite materials / Chemical techniques / AdsorptionSource:
Materials Chemistry and Physics, 2012, 137, 1, 213-220Publisher:
- Elsevier Science Sa, Lausanne
Funding / projects:
- Oxide-based environmentally-friendly porous materials for genotoxic substances removal (RS-172018)
- Development of technological processes for obtaining of ecological materials based on nonmetallic minerals (RS-34013)
DOI: 10.1016/j.matchemphys.2012.09.010
ISSN: 0254-0584
WoS: 000312624100033
Scopus: 2-s2.0-84868213443
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Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - JOUR AU - Daković, Aleksandra AU - Kragović, Milan AU - Rottinghaus, George E. AU - Ledoux, David R. AU - Butkeraitis, Paula AU - Vojislavljević, Dubravka Z. AU - Zarić, Snežana AU - Stamenić, Ljubišav PY - 2012 UR - https://ritnms.itnms.ac.rs/handle/123456789/215 AB - A zinc-exchanged montmorillonite (Zn-MONT) was prepared from a natural montmorillonite (MONT) and the adsorption of aflatoxin B-1 (AFB(1)) was investigated at pH 3 and 7. Characterization of Zn-MONT was done by determination of chemical composition, the point of the zero charge (pH(pzc)), thermal (DTA/TGA/DTG) and X-ray powder diffraction (XRPD) analysis. Adsorption of AFB(1) (C-0 = 4 ppm) by Zn-MONT, at different solid/liquid ratios (10, 1 and 0.5 g L-1), at pH 3 or 7, showed that its adsorption was high (over 96%) and independent of pH, similar to MONT. No desorption of AFB(1) from MONT-AFB(1) and Zn-MONT-AFB(1) complexes occurred at pH 6.5, suggesting strong binding of AFB(1) by both adsorbents. Furthermore, AFB(1) adsorption by Zn-MONT followed a nonlinear (Langmuir) type of isotherm at pH 3 with a calculated maximum capacity of 60.17 mg g(-1). The stability of MONT-AFB(1) and Zn-MONT-AFB(1) complexes was evaluated by calculating the binding energies between AFB(1) and metal cations using quantum chemical methods. The evaluated interaction energies of AFB(1) with hydrated Zn2+, Mg2+, and Ca2+ cations showed that the strongest interaction was the interaction of the Zn2+ system, -70.2 kcal mol(-1), whereas energies for Mg-2 and Ca2+ systems were -68.8 and -62.9 kcal mol(-1), respectively. The results indicate that Zn-MONT can be suitable for potential practical application as both, an antibacterial and an aflatoxin binding agent. PB - Elsevier Science Sa, Lausanne T2 - Materials Chemistry and Physics T1 - Preparation and characterization of zinc-exchanged montmorillonite and its effectiveness as aflatoxin B-1 adsorbent EP - 220 IS - 1 SP - 213 VL - 137 DO - 10.1016/j.matchemphys.2012.09.010 UR - conv_640 ER -
@article{ author = "Daković, Aleksandra and Kragović, Milan and Rottinghaus, George E. and Ledoux, David R. and Butkeraitis, Paula and Vojislavljević, Dubravka Z. and Zarić, Snežana and Stamenić, Ljubišav", year = "2012", abstract = "A zinc-exchanged montmorillonite (Zn-MONT) was prepared from a natural montmorillonite (MONT) and the adsorption of aflatoxin B-1 (AFB(1)) was investigated at pH 3 and 7. Characterization of Zn-MONT was done by determination of chemical composition, the point of the zero charge (pH(pzc)), thermal (DTA/TGA/DTG) and X-ray powder diffraction (XRPD) analysis. Adsorption of AFB(1) (C-0 = 4 ppm) by Zn-MONT, at different solid/liquid ratios (10, 1 and 0.5 g L-1), at pH 3 or 7, showed that its adsorption was high (over 96%) and independent of pH, similar to MONT. No desorption of AFB(1) from MONT-AFB(1) and Zn-MONT-AFB(1) complexes occurred at pH 6.5, suggesting strong binding of AFB(1) by both adsorbents. Furthermore, AFB(1) adsorption by Zn-MONT followed a nonlinear (Langmuir) type of isotherm at pH 3 with a calculated maximum capacity of 60.17 mg g(-1). The stability of MONT-AFB(1) and Zn-MONT-AFB(1) complexes was evaluated by calculating the binding energies between AFB(1) and metal cations using quantum chemical methods. The evaluated interaction energies of AFB(1) with hydrated Zn2+, Mg2+, and Ca2+ cations showed that the strongest interaction was the interaction of the Zn2+ system, -70.2 kcal mol(-1), whereas energies for Mg-2 and Ca2+ systems were -68.8 and -62.9 kcal mol(-1), respectively. The results indicate that Zn-MONT can be suitable for potential practical application as both, an antibacterial and an aflatoxin binding agent.", publisher = "Elsevier Science Sa, Lausanne", journal = "Materials Chemistry and Physics", title = "Preparation and characterization of zinc-exchanged montmorillonite and its effectiveness as aflatoxin B-1 adsorbent", pages = "220-213", number = "1", volume = "137", doi = "10.1016/j.matchemphys.2012.09.010", url = "conv_640" }
Daković, A., Kragović, M., Rottinghaus, G. E., Ledoux, D. R., Butkeraitis, P., Vojislavljević, D. Z., Zarić, S.,& Stamenić, L.. (2012). Preparation and characterization of zinc-exchanged montmorillonite and its effectiveness as aflatoxin B-1 adsorbent. in Materials Chemistry and Physics Elsevier Science Sa, Lausanne., 137(1), 213-220. https://doi.org/10.1016/j.matchemphys.2012.09.010 conv_640
Daković A, Kragović M, Rottinghaus GE, Ledoux DR, Butkeraitis P, Vojislavljević DZ, Zarić S, Stamenić L. Preparation and characterization of zinc-exchanged montmorillonite and its effectiveness as aflatoxin B-1 adsorbent. in Materials Chemistry and Physics. 2012;137(1):213-220. doi:10.1016/j.matchemphys.2012.09.010 conv_640 .
Daković, Aleksandra, Kragović, Milan, Rottinghaus, George E., Ledoux, David R., Butkeraitis, Paula, Vojislavljević, Dubravka Z., Zarić, Snežana, Stamenić, Ljubišav, "Preparation and characterization of zinc-exchanged montmorillonite and its effectiveness as aflatoxin B-1 adsorbent" in Materials Chemistry and Physics, 137, no. 1 (2012):213-220, https://doi.org/10.1016/j.matchemphys.2012.09.010 ., conv_640 .