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Competitive removal mechanism to simultaneously incarcerate bisphenol A, triclosan and 4-tert-octylphenol within beta-cyclodextrin crosslinked citric acid used for encapsulation in polypropylene membrane protected-micro-solid-phase extraction

Endocrine disrupting compounds (EDCs) are extensively found in the environment and severely impacting human health. In addressing this issue, the beta-cyclodextrin crosslinked citric acid (BCD-CA) had been previously employed in membrane-protected micro-solid phase extraction for sequestering EDCs f...

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Main Authors: Rozaini, Hafiz, Saad, Bahruddin, Lim, Jun Wei, Yahaya, Noorfatimah, Ramachandran, Muggundha Raoov, Ridzuan, Nur Diyan Mohd, Kiatkittipong, Worapon, Pasupuleti, Visweswara Rao, Lam, Sze Mun, Sin, Jin Chung
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Published: Elsevier 2022
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GE Environmental Sciences
Online Access:http://eprints.um.edu.my/40829/
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spelling my.um.eprints.408292023-09-26T07:56:33Z http://eprints.um.edu.my/40829/ Competitive removal mechanism to simultaneously incarcerate bisphenol A, triclosan and 4-tert-octylphenol within beta-cyclodextrin crosslinked citric acid used for encapsulation in polypropylene membrane protected-micro-solid-phase extraction Rozaini, Hafiz Saad, Bahruddin Lim, Jun Wei Yahaya, Noorfatimah Ramachandran, Muggundha Raoov Ridzuan, Nur Diyan Mohd Kiatkittipong, Worapon Pasupuleti, Visweswara Rao Lam, Sze Mun Sin, Jin Chung GE Environmental Sciences Endocrine disrupting compounds (EDCs) are extensively found in the environment and severely impacting human health. In addressing this issue, the beta-cyclodextrin crosslinked citric acid (BCD-CA) had been previously employed in membrane-protected micro-solid phase extraction for sequestering EDCs from water medium; and the findings revealed that BCD-CA possessed a selectivity property. On that account, the potential of BCD-CA towards competitive adsorption of selected EDCs was investigated in terms of adsorption mechanism and selectivity property. Factors that affected the removal efficiencies such as sample pH, sorbent dosage, contact time and initial concentration were evaluated. The characterization results revealed that the carbon percentage of BCD-CA had increased by 2.04%, while the hydrogen percentage had reduced by 1.83%, signifying the successful crosslinking of BCD-CA. Besides, the amount of active BCD was calculated to be 3.2 x 10(-7) mol, while the amount of carboxyl group was 2.48 x 10(-5) mol per 4 mg of BCD-CA. Moreover, BCD-CA was stable in an aqueous medium with the zeta potential obtained at -36.5 mV and had a high-water retention capacity (similar to 150%). The competitive adsorption mechanism by BCD-CA with EDCs followed the pseudo-second-order kinetics and Freundlich isotherm, suggesting that the adsorption process was dominated by chemisorption on the heterogeneous surface of the adsorbent. Thermodynamic results revealed that adsorption of 4-tert-octylphenol had the most negative Delta G value, indicating most favorable to be adsorbed by BCD-CA as opposed to triclosan and bisphenol A, which was coherent with the apparent formation constant results. These unique properties manifested the practicality of BCD-CA as a selective adsorbent to detect and remove EDCs from the water medium. Elsevier 2022-12 Article PeerReviewed Rozaini, Hafiz and Saad, Bahruddin and Lim, Jun Wei and Yahaya, Noorfatimah and Ramachandran, Muggundha Raoov and Ridzuan, Nur Diyan Mohd and Kiatkittipong, Worapon and Pasupuleti, Visweswara Rao and Lam, Sze Mun and Sin, Jin Chung (2022) Competitive removal mechanism to simultaneously incarcerate bisphenol A, triclosan and 4-tert-octylphenol within beta-cyclodextrin crosslinked citric acid used for encapsulation in polypropylene membrane protected-micro-solid-phase extraction. Chemosphere, 309 (1). ISSN 0045-6535, DOI https://doi.org/10.1016/j.chemosphere.2022.136626 <https://doi.org/10.1016/j.chemosphere.2022.136626>. 10.1016/j.chemosphere.2022.136626
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic GE Environmental Sciences
spellingShingle GE Environmental Sciences
Rozaini, Hafiz
Saad, Bahruddin
Lim, Jun Wei
Yahaya, Noorfatimah
Ramachandran, Muggundha Raoov
Ridzuan, Nur Diyan Mohd
Kiatkittipong, Worapon
Pasupuleti, Visweswara Rao
Lam, Sze Mun
Sin, Jin Chung
Competitive removal mechanism to simultaneously incarcerate bisphenol A, triclosan and 4-tert-octylphenol within beta-cyclodextrin crosslinked citric acid used for encapsulation in polypropylene membrane protected-micro-solid-phase extraction
description Endocrine disrupting compounds (EDCs) are extensively found in the environment and severely impacting human health. In addressing this issue, the beta-cyclodextrin crosslinked citric acid (BCD-CA) had been previously employed in membrane-protected micro-solid phase extraction for sequestering EDCs from water medium; and the findings revealed that BCD-CA possessed a selectivity property. On that account, the potential of BCD-CA towards competitive adsorption of selected EDCs was investigated in terms of adsorption mechanism and selectivity property. Factors that affected the removal efficiencies such as sample pH, sorbent dosage, contact time and initial concentration were evaluated. The characterization results revealed that the carbon percentage of BCD-CA had increased by 2.04%, while the hydrogen percentage had reduced by 1.83%, signifying the successful crosslinking of BCD-CA. Besides, the amount of active BCD was calculated to be 3.2 x 10(-7) mol, while the amount of carboxyl group was 2.48 x 10(-5) mol per 4 mg of BCD-CA. Moreover, BCD-CA was stable in an aqueous medium with the zeta potential obtained at -36.5 mV and had a high-water retention capacity (similar to 150%). The competitive adsorption mechanism by BCD-CA with EDCs followed the pseudo-second-order kinetics and Freundlich isotherm, suggesting that the adsorption process was dominated by chemisorption on the heterogeneous surface of the adsorbent. Thermodynamic results revealed that adsorption of 4-tert-octylphenol had the most negative Delta G value, indicating most favorable to be adsorbed by BCD-CA as opposed to triclosan and bisphenol A, which was coherent with the apparent formation constant results. These unique properties manifested the practicality of BCD-CA as a selective adsorbent to detect and remove EDCs from the water medium.
format Article
author Rozaini, Hafiz
Saad, Bahruddin
Lim, Jun Wei
Yahaya, Noorfatimah
Ramachandran, Muggundha Raoov
Ridzuan, Nur Diyan Mohd
Kiatkittipong, Worapon
Pasupuleti, Visweswara Rao
Lam, Sze Mun
Sin, Jin Chung
author_facet Rozaini, Hafiz
Saad, Bahruddin
Lim, Jun Wei
Yahaya, Noorfatimah
Ramachandran, Muggundha Raoov
Ridzuan, Nur Diyan Mohd
Kiatkittipong, Worapon
Pasupuleti, Visweswara Rao
Lam, Sze Mun
Sin, Jin Chung
author_sort Rozaini, Hafiz
title Competitive removal mechanism to simultaneously incarcerate bisphenol A, triclosan and 4-tert-octylphenol within beta-cyclodextrin crosslinked citric acid used for encapsulation in polypropylene membrane protected-micro-solid-phase extraction
title_short Competitive removal mechanism to simultaneously incarcerate bisphenol A, triclosan and 4-tert-octylphenol within beta-cyclodextrin crosslinked citric acid used for encapsulation in polypropylene membrane protected-micro-solid-phase extraction
title_full Competitive removal mechanism to simultaneously incarcerate bisphenol A, triclosan and 4-tert-octylphenol within beta-cyclodextrin crosslinked citric acid used for encapsulation in polypropylene membrane protected-micro-solid-phase extraction
title_fullStr Competitive removal mechanism to simultaneously incarcerate bisphenol A, triclosan and 4-tert-octylphenol within beta-cyclodextrin crosslinked citric acid used for encapsulation in polypropylene membrane protected-micro-solid-phase extraction
title_full_unstemmed Competitive removal mechanism to simultaneously incarcerate bisphenol A, triclosan and 4-tert-octylphenol within beta-cyclodextrin crosslinked citric acid used for encapsulation in polypropylene membrane protected-micro-solid-phase extraction
title_sort competitive removal mechanism to simultaneously incarcerate bisphenol a, triclosan and 4-tert-octylphenol within beta-cyclodextrin crosslinked citric acid used for encapsulation in polypropylene membrane protected-micro-solid-phase extraction
publisher Elsevier
publishDate 2022
url http://eprints.um.edu.my/40829/
_version_ 1781704530755321856
score 13.211869

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