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Spent tea waste extract as a green modifying agent of chitosan for aspirin adsorption: Fixed-bed column, modeling and toxicity studies.

Aspirin is a prevalent over-the-counter medicine that has been categorized as an emerging contaminant due to its danger to both living things and the environment. This work presents chitosan modified with spent tea waste extract (STWE) via the wet impregnation method as an adsorbent for the enhanced...

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Main Authors: Nordin, Abu Hassan, Ngadi, Norzita, Nordin, Muhammad Luqman, Noralidin, Nur Amalina, Nabgan, Walid, Osman, Abdinasir Yusuf, Shaari, Rumaizi
Format: Article
Published: Elsevier B.V. 2023
Subjects:
Q Science (General)
QD Chemistry
Online Access:http://eprints.utm.my/105495/
http://dx.doi.org/10.1016/j.ijbiomac.2023.126501
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spelling my.utm.1054952024-05-05T06:19:18Z http://eprints.utm.my/105495/ Spent tea waste extract as a green modifying agent of chitosan for aspirin adsorption: Fixed-bed column, modeling and toxicity studies. Nordin, Abu Hassan Ngadi, Norzita Nordin, Muhammad Luqman Noralidin, Nur Amalina Nabgan, Walid Osman, Abdinasir Yusuf Shaari, Rumaizi Q Science (General) QD Chemistry Aspirin is a prevalent over-the-counter medicine that has been categorized as an emerging contaminant due to its danger to both living things and the environment. This work presents chitosan modified with spent tea waste extract (STWE) via the wet impregnation method as an adsorbent for the enhanced removal of aspirin in a fixed-bed column. The adsorbent (named chitosan-STWE) was successfully synthesized and exhibited a low crystallinity structure, good stability against thermal and acidic conditions, as depicted by HNMR, XRD, TGA, and the dissolution rate of the adsorbent. The adsorption column study reveals that increasing bed height (up to 6 cm) increases the percentage of aspirin removal (up to 40.8 %). Increasing aspirin concentration enhances the amount of aspirin that comes into contact with the chitosan-STWE adsorbent, thereby increasing the adsorption capacity. On the other hand, higher flow rates result in shorter contact times between the adsorbent and adsorbates, which lowers the quantity of aspirin adsorbed. The experimental data are in accordance with the values generated by the Thomas and Yoon-Nelson models, with the maximum adsorption capacity of 61.7 mg/g. The chitosan-STWE adsorbent was determined to be non-toxic, thus safe to be used in wastewater treatment applications. Elsevier B.V. 2023 Article PeerReviewed Nordin, Abu Hassan and Ngadi, Norzita and Nordin, Muhammad Luqman and Noralidin, Nur Amalina and Nabgan, Walid and Osman, Abdinasir Yusuf and Shaari, Rumaizi (2023) Spent tea waste extract as a green modifying agent of chitosan for aspirin adsorption: Fixed-bed column, modeling and toxicity studies. International Journal Of Biological Macromolecules, 253 (126501). NA-NA. ISSN 0141-8130 http://dx.doi.org/10.1016/j.ijbiomac.2023.126501 DOI: 10.1016/j.ijbiomac.2023.126501
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic Q Science (General)
QD Chemistry
spellingShingle Q Science (General)
QD Chemistry
Nordin, Abu Hassan
Ngadi, Norzita
Nordin, Muhammad Luqman
Noralidin, Nur Amalina
Nabgan, Walid
Osman, Abdinasir Yusuf
Shaari, Rumaizi
Spent tea waste extract as a green modifying agent of chitosan for aspirin adsorption: Fixed-bed column, modeling and toxicity studies.
description Aspirin is a prevalent over-the-counter medicine that has been categorized as an emerging contaminant due to its danger to both living things and the environment. This work presents chitosan modified with spent tea waste extract (STWE) via the wet impregnation method as an adsorbent for the enhanced removal of aspirin in a fixed-bed column. The adsorbent (named chitosan-STWE) was successfully synthesized and exhibited a low crystallinity structure, good stability against thermal and acidic conditions, as depicted by HNMR, XRD, TGA, and the dissolution rate of the adsorbent. The adsorption column study reveals that increasing bed height (up to 6 cm) increases the percentage of aspirin removal (up to 40.8 %). Increasing aspirin concentration enhances the amount of aspirin that comes into contact with the chitosan-STWE adsorbent, thereby increasing the adsorption capacity. On the other hand, higher flow rates result in shorter contact times between the adsorbent and adsorbates, which lowers the quantity of aspirin adsorbed. The experimental data are in accordance with the values generated by the Thomas and Yoon-Nelson models, with the maximum adsorption capacity of 61.7 mg/g. The chitosan-STWE adsorbent was determined to be non-toxic, thus safe to be used in wastewater treatment applications.
format Article
author Nordin, Abu Hassan
Ngadi, Norzita
Nordin, Muhammad Luqman
Noralidin, Nur Amalina
Nabgan, Walid
Osman, Abdinasir Yusuf
Shaari, Rumaizi
author_facet Nordin, Abu Hassan
Ngadi, Norzita
Nordin, Muhammad Luqman
Noralidin, Nur Amalina
Nabgan, Walid
Osman, Abdinasir Yusuf
Shaari, Rumaizi
author_sort Nordin, Abu Hassan
title Spent tea waste extract as a green modifying agent of chitosan for aspirin adsorption: Fixed-bed column, modeling and toxicity studies.
title_short Spent tea waste extract as a green modifying agent of chitosan for aspirin adsorption: Fixed-bed column, modeling and toxicity studies.
title_full Spent tea waste extract as a green modifying agent of chitosan for aspirin adsorption: Fixed-bed column, modeling and toxicity studies.
title_fullStr Spent tea waste extract as a green modifying agent of chitosan for aspirin adsorption: Fixed-bed column, modeling and toxicity studies.
title_full_unstemmed Spent tea waste extract as a green modifying agent of chitosan for aspirin adsorption: Fixed-bed column, modeling and toxicity studies.
title_sort spent tea waste extract as a green modifying agent of chitosan for aspirin adsorption: fixed-bed column, modeling and toxicity studies.
publisher Elsevier B.V.
publishDate 2023
url http://eprints.utm.my/105495/
http://dx.doi.org/10.1016/j.ijbiomac.2023.126501
_version_ 1800082624058753024
score 13.211869

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