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Kinetika adsorpcije aflatoksina B1 i G2 na Ca-klinoptilolitu

Kinetics of aflatoxin B1 and G2 adsorption on Ca-clinoptilolite

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2000
23.pdf (4.855Mb)
Authors
Daković, Aleksandra
Tomašević-Čanović, Magdalena
Dondur, Vera
Vujaković, Aleksandra
Radošević, Predrag
Article (Published version)
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Abstract
Praćena je kinetika adsorpcije aflatoksina B1 i G2 na Ca-klinoptilolitu, u vodenom rastvoru elektrolita, na pH 2 i pH 7 i na temperaturi 37 °C. Dobijeni rezultati pokazuju da proces adsorpcije oba toksina započinje brzom reakcijom i da se najveći deo toksina adsorbuje u prvih nekoliko minuta. Posle ovog brzog procesa sledi znatno sporiji proces u kome se nastavlja vezivanje toksina za aktivne centre mineralnog adsorbenta. Pokazano je metodom početnih brzina da je brzi proces adsorpcije oba toksina reakcija prvog reda, dok je spori proces reakcija nultog reda. Indeksi adsorpcije i brzine adsorpcije zavise od pH sredine. U ispitivanom opsegu koncentracija (500-3000 μg/dm3 postignuti su visoki indeksi adsorpcije kako aflatoksina B1 tako i aflatoksina G2 (> 80%).
The kinetics of aflatoxins B1 and G2 adsorption on Ca-clinoptilolite at pH 2 and 7, in aqueous electrolyte at 37 °C were studied. For both aflatoxins, the adsorption process begins with a fast reaction whereby most of the toxin is adsorbed in the first few minutes. This fast process is followed by the significantly slower process of aflatoxin bonding at active centers of mineral adsorbent. The initial rate method showed that the fast adsorption process of aflatoxin B1 and G2, at both pH values is a first order reaction, while the slow adsorption process of these aflatoxins is a zero order reaction. The adsorption indexes and adsorption rates for both examined toxins were pH dependent. In the investigated initial toxins concentration ranges (500-3000 μg/dm3), high adsorption indexes were achieved (> 80 %).
Keywords:
clinoptilolite / aflatoxin G2 / aflatoxin B1 / adsorption
Source:
Journal of the Serbian Chemical Society, 2000, 65, 10, 715-723
Publisher:
  • Srpsko hemijsko društvo, Beograd

DOI: 10.2298/JSC0010715D

ISSN: 0352-5139

WoS: 000165074000005

Scopus: 2-s2.0-0034345790
[ Google Scholar ]
15
URI
https://ritnms.itnms.ac.rs/handle/123456789/26
Collections
  • Radovi istraživača / Researchers’ publications
Institution/Community
Institut za tehnologiju nuklearnih i drugih mineralnih sirovina
TY  - JOUR
AU  - Daković, Aleksandra
AU  - Tomašević-Čanović, Magdalena
AU  - Dondur, Vera
AU  - Vujaković, Aleksandra
AU  - Radošević, Predrag
PY  - 2000
UR  - https://ritnms.itnms.ac.rs/handle/123456789/26
AB  - Praćena je kinetika adsorpcije aflatoksina B1 i G2 na Ca-klinoptilolitu, u vodenom rastvoru elektrolita, na pH 2 i pH 7 i na temperaturi 37 °C. Dobijeni rezultati pokazuju da proces adsorpcije oba toksina započinje brzom reakcijom i da se najveći deo toksina adsorbuje u prvih nekoliko minuta. Posle ovog brzog procesa sledi znatno sporiji proces u kome se nastavlja vezivanje toksina za aktivne centre mineralnog adsorbenta. Pokazano je metodom početnih brzina da je brzi proces adsorpcije oba toksina reakcija prvog reda, dok je spori proces reakcija nultog reda. Indeksi adsorpcije i brzine adsorpcije zavise od pH sredine. U ispitivanom opsegu koncentracija (500-3000 μg/dm3 postignuti su visoki indeksi adsorpcije kako aflatoksina B1 tako i aflatoksina G2 (> 80%).
AB  - The kinetics of aflatoxins B1 and G2 adsorption on Ca-clinoptilolite at pH 2 and 7, in aqueous electrolyte at 37 °C were studied. For both aflatoxins, the adsorption process begins with a fast reaction whereby most of the toxin is adsorbed in the first few minutes. This fast process is followed by the significantly slower process of aflatoxin bonding at active centers of mineral adsorbent. The initial rate method showed that the fast adsorption process of aflatoxin B1 and G2, at both pH values is a first order reaction, while the slow adsorption process of these aflatoxins is a zero order reaction. The adsorption indexes and adsorption rates for both examined toxins were pH dependent. In the investigated initial toxins concentration ranges (500-3000 μg/dm3), high adsorption indexes were achieved (> 80 %).
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Kinetika adsorpcije aflatoksina B1 i G2 na Ca-klinoptilolitu
T1  - Kinetics of aflatoxin B1 and G2 adsorption on Ca-clinoptilolite
EP  - 723
IS  - 10
SP  - 715
VL  - 65
DO  - 10.2298/JSC0010715D
UR  - conv_450
ER  - 
@article{
author = "Daković, Aleksandra and Tomašević-Čanović, Magdalena and Dondur, Vera and Vujaković, Aleksandra and Radošević, Predrag",
year = "2000",
abstract = "Praćena je kinetika adsorpcije aflatoksina B1 i G2 na Ca-klinoptilolitu, u vodenom rastvoru elektrolita, na pH 2 i pH 7 i na temperaturi 37 °C. Dobijeni rezultati pokazuju da proces adsorpcije oba toksina započinje brzom reakcijom i da se najveći deo toksina adsorbuje u prvih nekoliko minuta. Posle ovog brzog procesa sledi znatno sporiji proces u kome se nastavlja vezivanje toksina za aktivne centre mineralnog adsorbenta. Pokazano je metodom početnih brzina da je brzi proces adsorpcije oba toksina reakcija prvog reda, dok je spori proces reakcija nultog reda. Indeksi adsorpcije i brzine adsorpcije zavise od pH sredine. U ispitivanom opsegu koncentracija (500-3000 μg/dm3 postignuti su visoki indeksi adsorpcije kako aflatoksina B1 tako i aflatoksina G2 (> 80%)., The kinetics of aflatoxins B1 and G2 adsorption on Ca-clinoptilolite at pH 2 and 7, in aqueous electrolyte at 37 °C were studied. For both aflatoxins, the adsorption process begins with a fast reaction whereby most of the toxin is adsorbed in the first few minutes. This fast process is followed by the significantly slower process of aflatoxin bonding at active centers of mineral adsorbent. The initial rate method showed that the fast adsorption process of aflatoxin B1 and G2, at both pH values is a first order reaction, while the slow adsorption process of these aflatoxins is a zero order reaction. The adsorption indexes and adsorption rates for both examined toxins were pH dependent. In the investigated initial toxins concentration ranges (500-3000 μg/dm3), high adsorption indexes were achieved (> 80 %).",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Kinetika adsorpcije aflatoksina B1 i G2 na Ca-klinoptilolitu, Kinetics of aflatoxin B1 and G2 adsorption on Ca-clinoptilolite",
pages = "723-715",
number = "10",
volume = "65",
doi = "10.2298/JSC0010715D",
url = "conv_450"
}
Daković, A., Tomašević-Čanović, M., Dondur, V., Vujaković, A.,& Radošević, P.. (2000). Kinetika adsorpcije aflatoksina B1 i G2 na Ca-klinoptilolitu. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 65(10), 715-723.
https://doi.org/10.2298/JSC0010715D
conv_450
Daković A, Tomašević-Čanović M, Dondur V, Vujaković A, Radošević P. Kinetika adsorpcije aflatoksina B1 i G2 na Ca-klinoptilolitu. in Journal of the Serbian Chemical Society. 2000;65(10):715-723.
doi:10.2298/JSC0010715D
conv_450 .
Daković, Aleksandra, Tomašević-Čanović, Magdalena, Dondur, Vera, Vujaković, Aleksandra, Radošević, Predrag, "Kinetika adsorpcije aflatoksina B1 i G2 na Ca-klinoptilolitu" in Journal of the Serbian Chemical Society, 65, no. 10 (2000):715-723,
https://doi.org/10.2298/JSC0010715D .,
conv_450 .

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