Aflatoxin B-1 adsorption by natural and copper modified montmorillonite
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Daković, Aleksandra
Matijašević, Srđan

Rottinghaus, George E.
Ledoux, David R.
Butkeraitis, Paula
Sekulić, Živko
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Adsorption of aflatoxin B-1 (AFB1) by natural montmorillonite (MONT) and montmorillonite modified with copper ions (Cu-MONT) was investigated. Both MONTs were characterized using the X-ray powder diffraction (XRPD) analysis, thermal analysis (DTA/TGA) and scanning electron miscroscopy/electron dispersive spectroscopy (SEM/EDS). The results of XRPD and SEM/EDS analyses of Cu-MONT suggested partial ion exchange of native inorganic cations in MONT with copper occurred. Investigation of AFB1 adsorption by MONT and Cu-MONT, at pH 3, 7 or 9, showed that adsorption of this toxin by both MONTs was high (over 93%). Since AFB1 is nonionizable, no differences in AFB1 adsorption by both MONTs, at different pHs, were observed, as expected. Futhermore, it was determined that adsorption of AFB1 by both MONTs followed a non-linear (Langmuir) type of isotherm, at pH 3. The calculated maximum adsorbed amounts of AFB1 by MONT (40.982 mg/g) and Cu-MONT (66.225 mg/g), derived from Langmuir plots of isother...ms, indicate that Cu-MONT was much effective in adsorbing AFB1. Since, the main cation in an exchangeable position in MONT is calcium, and in Cu-MONT both calcium and copper, the fact that ion exchange of inorganic cations in MONT with copper increases adsorption of AFB1 suggests that additional interactions between AFB1 and copper ions in Cu-MONT caused greater adsorption.
Keywords:
montmorillonite / ion exchange / copper / aflatoxin B-1 / adsorptionSource:
Colloids and Surfaces B-Biointerfaces, 2008, 66, 1, 20-25Publisher:
- Elsevier, Amsterdam
Funding / projects:
- 401-00-218/2007-01/12-IP (Tip 1)/12
- Fizičko-hemijski fenomeni površina alumosilikatnih minerala - osnova za razvoj novih ekoloških materijala (RS-142057)
DOI: 10.1016/j.colsurfb.2008.05.008
ISSN: 0927-7765
PubMed: 18585010
WoS: 000258983900003
Scopus: 2-s2.0-47349111358
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Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - JOUR AU - Daković, Aleksandra AU - Matijašević, Srđan AU - Rottinghaus, George E. AU - Ledoux, David R. AU - Butkeraitis, Paula AU - Sekulić, Živko PY - 2008 UR - https://ritnms.itnms.ac.rs/handle/123456789/131 AB - Adsorption of aflatoxin B-1 (AFB1) by natural montmorillonite (MONT) and montmorillonite modified with copper ions (Cu-MONT) was investigated. Both MONTs were characterized using the X-ray powder diffraction (XRPD) analysis, thermal analysis (DTA/TGA) and scanning electron miscroscopy/electron dispersive spectroscopy (SEM/EDS). The results of XRPD and SEM/EDS analyses of Cu-MONT suggested partial ion exchange of native inorganic cations in MONT with copper occurred. Investigation of AFB1 adsorption by MONT and Cu-MONT, at pH 3, 7 or 9, showed that adsorption of this toxin by both MONTs was high (over 93%). Since AFB1 is nonionizable, no differences in AFB1 adsorption by both MONTs, at different pHs, were observed, as expected. Futhermore, it was determined that adsorption of AFB1 by both MONTs followed a non-linear (Langmuir) type of isotherm, at pH 3. The calculated maximum adsorbed amounts of AFB1 by MONT (40.982 mg/g) and Cu-MONT (66.225 mg/g), derived from Langmuir plots of isotherms, indicate that Cu-MONT was much effective in adsorbing AFB1. Since, the main cation in an exchangeable position in MONT is calcium, and in Cu-MONT both calcium and copper, the fact that ion exchange of inorganic cations in MONT with copper increases adsorption of AFB1 suggests that additional interactions between AFB1 and copper ions in Cu-MONT caused greater adsorption. PB - Elsevier, Amsterdam T2 - Colloids and Surfaces B-Biointerfaces T1 - Aflatoxin B-1 adsorption by natural and copper modified montmorillonite EP - 25 IS - 1 SP - 20 VL - 66 DO - 10.1016/j.colsurfb.2008.05.008 UR - conv_550 ER -
@article{ author = "Daković, Aleksandra and Matijašević, Srđan and Rottinghaus, George E. and Ledoux, David R. and Butkeraitis, Paula and Sekulić, Živko", year = "2008", abstract = "Adsorption of aflatoxin B-1 (AFB1) by natural montmorillonite (MONT) and montmorillonite modified with copper ions (Cu-MONT) was investigated. Both MONTs were characterized using the X-ray powder diffraction (XRPD) analysis, thermal analysis (DTA/TGA) and scanning electron miscroscopy/electron dispersive spectroscopy (SEM/EDS). The results of XRPD and SEM/EDS analyses of Cu-MONT suggested partial ion exchange of native inorganic cations in MONT with copper occurred. Investigation of AFB1 adsorption by MONT and Cu-MONT, at pH 3, 7 or 9, showed that adsorption of this toxin by both MONTs was high (over 93%). Since AFB1 is nonionizable, no differences in AFB1 adsorption by both MONTs, at different pHs, were observed, as expected. Futhermore, it was determined that adsorption of AFB1 by both MONTs followed a non-linear (Langmuir) type of isotherm, at pH 3. The calculated maximum adsorbed amounts of AFB1 by MONT (40.982 mg/g) and Cu-MONT (66.225 mg/g), derived from Langmuir plots of isotherms, indicate that Cu-MONT was much effective in adsorbing AFB1. Since, the main cation in an exchangeable position in MONT is calcium, and in Cu-MONT both calcium and copper, the fact that ion exchange of inorganic cations in MONT with copper increases adsorption of AFB1 suggests that additional interactions between AFB1 and copper ions in Cu-MONT caused greater adsorption.", publisher = "Elsevier, Amsterdam", journal = "Colloids and Surfaces B-Biointerfaces", title = "Aflatoxin B-1 adsorption by natural and copper modified montmorillonite", pages = "25-20", number = "1", volume = "66", doi = "10.1016/j.colsurfb.2008.05.008", url = "conv_550" }
Daković, A., Matijašević, S., Rottinghaus, G. E., Ledoux, D. R., Butkeraitis, P.,& Sekulić, Ž.. (2008). Aflatoxin B-1 adsorption by natural and copper modified montmorillonite. in Colloids and Surfaces B-Biointerfaces Elsevier, Amsterdam., 66(1), 20-25. https://doi.org/10.1016/j.colsurfb.2008.05.008 conv_550
Daković A, Matijašević S, Rottinghaus GE, Ledoux DR, Butkeraitis P, Sekulić Ž. Aflatoxin B-1 adsorption by natural and copper modified montmorillonite. in Colloids and Surfaces B-Biointerfaces. 2008;66(1):20-25. doi:10.1016/j.colsurfb.2008.05.008 conv_550 .
Daković, Aleksandra, Matijašević, Srđan, Rottinghaus, George E., Ledoux, David R., Butkeraitis, Paula, Sekulić, Živko, "Aflatoxin B-1 adsorption by natural and copper modified montmorillonite" in Colloids and Surfaces B-Biointerfaces, 66, no. 1 (2008):20-25, https://doi.org/10.1016/j.colsurfb.2008.05.008 ., conv_550 .