Adsorption of fumonisin B-1 (FB1) on natural clinoptilolite-rich zeolitic tuff, modified with different amounts (2, 5 and 10 mmol M+/100 g) of octadecyldimethylbenzyl ammonium (ODMBA) ions, at pH 3, 7 and 9, was investigated. The organozeolites were denoted as OZ-2, OZ-5 and OZ-10. Results showed that the presence of ODMBA ions at the zeolite surface greatly improved adsorption of FB1, especially at pH 7 and 9. FB1 adsorption on all three organozeolites showed a nonlinear type of isotherm, at pH 3 and 7 and 9. For OZ-2, the highest adsorption of FB1 was achieved atpH 3, while for OZ-10, the highest FB1 adsorption was observed atpH 9. At pH 7 and 9, FB1 adsorption was lowest for OZ-2, and increased as the amount of ODMBA at the surface increased. The highest FB1 adsorption was achieved when the zeolite surface was totally covered with ODMBA. Since OZ-2 has 20% of inorganic cations exchanged with ODMBA, the lower FB1 adsorption at pH 7 and 9 may be the result of the presence of the anion...ic form of FB1 that can not be adsorbed at the uncovered negatively-charged surface of the modified zeolitic tuff. The estimated maximum FB1 adsorption to OZ-10, based on a Langmuir fit to the data, was greatest (10.819 mg/g) at pH 3, suggesting that cationic form of FB1 also contributes to adsorption. Based on the structure of FB1 and the obtained adsorption data, it is possible that more than one sorption mechanism is relevant for FB1 adsorption by ODMBA modified zeolites.
TY - JOUR
AU - Daković, Aleksandra
AU - Tomašević-Čanović, Magdalena
AU - Rottinghaus, George E.
AU - Matijašević, Srđan
AU - Sekulić, Živko
PY - 2007
UR - https://ritnms.itnms.ac.rs/handle/123456789/121
AB - Adsorption of fumonisin B-1 (FB1) on natural clinoptilolite-rich zeolitic tuff, modified with different amounts (2, 5 and 10 mmol M+/100 g) of octadecyldimethylbenzyl ammonium (ODMBA) ions, at pH 3, 7 and 9, was investigated. The organozeolites were denoted as OZ-2, OZ-5 and OZ-10. Results showed that the presence of ODMBA ions at the zeolite surface greatly improved adsorption of FB1, especially at pH 7 and 9. FB1 adsorption on all three organozeolites showed a nonlinear type of isotherm, at pH 3 and 7 and 9. For OZ-2, the highest adsorption of FB1 was achieved atpH 3, while for OZ-10, the highest FB1 adsorption was observed atpH 9. At pH 7 and 9, FB1 adsorption was lowest for OZ-2, and increased as the amount of ODMBA at the surface increased. The highest FB1 adsorption was achieved when the zeolite surface was totally covered with ODMBA. Since OZ-2 has 20% of inorganic cations exchanged with ODMBA, the lower FB1 adsorption at pH 7 and 9 may be the result of the presence of the anionic form of FB1 that can not be adsorbed at the uncovered negatively-charged surface of the modified zeolitic tuff. The estimated maximum FB1 adsorption to OZ-10, based on a Langmuir fit to the data, was greatest (10.819 mg/g) at pH 3, suggesting that cationic form of FB1 also contributes to adsorption. Based on the structure of FB1 and the obtained adsorption data, it is possible that more than one sorption mechanism is relevant for FB1 adsorption by ODMBA modified zeolites.
PB - Elsevier, Amsterdam
T2 - Microporous and Mesoporous Materials
T1 - Fumonisin B-1 adsorption to octadecyldimethylbenzyl ammonium-modified clinoptilolite-rich zeolitic tuff
EP - 290
IS - 3
SP - 285
VL - 105
DO - 10.1016/j.micromeso.2007.03.037
UR - conv_534
ER -
@article{
author = "Daković, Aleksandra and Tomašević-Čanović, Magdalena and Rottinghaus, George E. and Matijašević, Srđan and Sekulić, Živko",
year = "2007",
abstract = "Adsorption of fumonisin B-1 (FB1) on natural clinoptilolite-rich zeolitic tuff, modified with different amounts (2, 5 and 10 mmol M+/100 g) of octadecyldimethylbenzyl ammonium (ODMBA) ions, at pH 3, 7 and 9, was investigated. The organozeolites were denoted as OZ-2, OZ-5 and OZ-10. Results showed that the presence of ODMBA ions at the zeolite surface greatly improved adsorption of FB1, especially at pH 7 and 9. FB1 adsorption on all three organozeolites showed a nonlinear type of isotherm, at pH 3 and 7 and 9. For OZ-2, the highest adsorption of FB1 was achieved atpH 3, while for OZ-10, the highest FB1 adsorption was observed atpH 9. At pH 7 and 9, FB1 adsorption was lowest for OZ-2, and increased as the amount of ODMBA at the surface increased. The highest FB1 adsorption was achieved when the zeolite surface was totally covered with ODMBA. Since OZ-2 has 20% of inorganic cations exchanged with ODMBA, the lower FB1 adsorption at pH 7 and 9 may be the result of the presence of the anionic form of FB1 that can not be adsorbed at the uncovered negatively-charged surface of the modified zeolitic tuff. The estimated maximum FB1 adsorption to OZ-10, based on a Langmuir fit to the data, was greatest (10.819 mg/g) at pH 3, suggesting that cationic form of FB1 also contributes to adsorption. Based on the structure of FB1 and the obtained adsorption data, it is possible that more than one sorption mechanism is relevant for FB1 adsorption by ODMBA modified zeolites.",
publisher = "Elsevier, Amsterdam",
journal = "Microporous and Mesoporous Materials",
title = "Fumonisin B-1 adsorption to octadecyldimethylbenzyl ammonium-modified clinoptilolite-rich zeolitic tuff",
pages = "290-285",
number = "3",
volume = "105",
doi = "10.1016/j.micromeso.2007.03.037",
url = "conv_534"
}
Daković, A., Tomašević-Čanović, M., Rottinghaus, G. E., Matijašević, S.,& Sekulić, Ž.. (2007). Fumonisin B-1 adsorption to octadecyldimethylbenzyl ammonium-modified clinoptilolite-rich zeolitic tuff. in Microporous and Mesoporous Materials
Elsevier, Amsterdam., 105(3), 285-290.
https://doi.org/10.1016/j.micromeso.2007.03.037
conv_534
Daković A, Tomašević-Čanović M, Rottinghaus GE, Matijašević S, Sekulić Ž. Fumonisin B-1 adsorption to octadecyldimethylbenzyl ammonium-modified clinoptilolite-rich zeolitic tuff. in Microporous and Mesoporous Materials. 2007;105(3):285-290.
doi:10.1016/j.micromeso.2007.03.037
conv_534 .
Daković, Aleksandra, Tomašević-Čanović, Magdalena, Rottinghaus, George E., Matijašević, Srđan, Sekulić, Živko, "Fumonisin B-1 adsorption to octadecyldimethylbenzyl ammonium-modified clinoptilolite-rich zeolitic tuff" in Microporous and Mesoporous Materials, 105, no. 3 (2007):285-290,
https://doi.org/10.1016/j.micromeso.2007.03.037 .,
conv_534 .
