THERMODYNAMICS OF Cu(II) SORPTION FROM AQUEOUS SOLUTIONS BY HYDROGEL SORBENTS BASED ON CROSSLINKED CHITOSAN
- Авторлар: Gabrin V.A1, Nikiforova T.E1
-
Мекемелер:
- Ivanovo State University of Chemistry and Technology
- Шығарылым: Том 99, № 11 (2025)
- Беттер: 1635–1640
- Бөлім: CURRENT PROBLEMS IN THE THEORY AND PRACTICE OF HETEROGENEOUS CATALYSTS AND ADSORBENTS
- ##submission.dateSubmitted##: 28.01.2026
- ##submission.datePublished##: 15.11.2025
- URL: https://journals.rcsi.science/0044-4537/article/view/378252
- DOI: https://doi.org/10.7868/S3034553725110041
- ID: 378252
Дәйексөз келтіру
Аннотация
The dependence of the sorption characteristics of heavy- metal sorbents based on crosslinked chitosan hydrogels on the temperature parameters of the heterogeneous system "aqueous copper(II) sulfate solution - chitosan-based sorbent" was studied in detail. Using experimental data on the static sorption of Cu(II) ions and applying various approaches and models (Langmuir, Freundlich, and the Theory of Volume Filling of Micropores), the key sorption parameters were calculated. Based on the calculated thermodynamic potentials, it was established that the sorption of copper cations is an endothermic process characterized by a sequential, thermodynamically spontaneous filling of the sorption volume of the interfacial surface and the sorption-active sites of the investigated sorbents.
Негізгі сөздер
Авторлар туралы
V. Gabrin
Ivanovo State University of Chemistry and Technology
Email: gabrinvictoria@gmail.com
Ivanovo, Ivanovo Region, Russia
T. Nikiforova
Ivanovo State University of Chemistry and TechnologyIvanovo, Ivanovo Region, Russia
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