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Title: Chitosan Functionalized with Carboxyl Groups as a Recyclable Biomaterial for the Adsorption of Cu (II) and Zn (II) Ions in Aqueous Media
Authors: Abu El-Soad, A. M.
Lazzara, G.
Abd El-Magied, M. O.
Cavallaro, G.
Al-Otaibi, J. S.
Sayyed, M. I.
Kovaleva, E. G.
Issue Date: 2022
Publisher: MDPI
Citation: Chitosan Functionalized with Carboxyl Groups as a Recyclable Biomaterial for the Adsorption of Cu (II) and Zn (II) Ions in Aqueous Media / A. M. Abu El-Soad, G. Lazzara, M. O. Abd El-Magied et al. // International Journal of Molecular Sciences. — 2022. — Vol. 23. — Iss. 4. — 2396.
Abstract: The modification of chitosan represents a challenging task in obtaining biopolymeric materials with enhanced removal capacity for heavy metals. In the present work, the adsorption characteristics of chitosan modified with carboxyl groups (CTS-CAA) towards copper (II) and zinc (II) ions have been tested. The efficacy of the synthesis of CTS-CAA has been evaluated by studying various properties of the modified chitosan. Specifically, the functionalized chitosan has been characterized by using several techniques, including thermal analyses (differential scanning calorimetry and thermogravimetry), spectroscopies (FT-IR, XRD), elemental analysis, and scanning electron microscopy. The kinetics and the adsorption isotherms of CTS-CAA towards both Cu (II) and Zn (II) have been determined in the aqueous solvent under variable pH. The obtained results have been analyzed by using different adsorption models. In addition, the experiments have been conducted at variable temperatures to explore the thermodynamics of the adsorption process. The regeneration of CTS-CAA has been investigated by studying the desorption process using different eluents. This paper reports an efficient protocol to synthesize chitosan-based material perspective as regenerative adsorbents for heavy metals. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85124885442
PURE ID: 29638870
ISSN: 1661-6596
metadata.dc.description.sponsorship: The authors express their gratitude to Princess Nourah bint Abdulrahman University Researchers Supporting Project number (PNURSP2022R13), Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia. The work was supported by the Russian Foundation for Basic Research (RFBR) grant 18-29-12129mk. The researcher A.M. Abu El-Soad is funded by a scholarship under the Joint Executive program between the Arab Republic of Egypt and Russian Federation.
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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