An adsorption agent based on chitosan–zeolite composite
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Environmental Science: Advances
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In this article, we present a chitosan–zeolite composite, which was synthesized and used as an adsorbent
material for caesium (Cs) removal from aqueous media and real liquid radioactive organic waste (LROW).
The compound was characterized by X-ray diffraction, Fourier transform infrared spectroscopy, and
scanning electron microscopy techniques. The physicochemical characterization indicates the
production of a composite. Adsorption experiments were first performed using the prepared solutions
contaminated with Cs using full factorial design with two variables of interest: initial Cs concentration
(Cs0) and adsorbent dosage (mg L−1
). The results indicated a high caesium removal rate with removal
values above 93% and adsorption capacity of up to 10 mg g−1
. With the best experimental conditions
according to our experimental domain, time was evaluated and equilibrium was reached in 180 min.
Finally, the adsorbent material was tested as an adsorbent for Cs, Am, and U from LROW. When in
contact with LORW, the removal rates (%) were 21.51 (137Cs), 26.39 (241Am), and 20.26 (U (total)).
Although lower, this material indicated that it has the potential to be used for multi-elemental adsorption.
Como referenciar
ARAUJO, LEANDRO G. de; MEDEIROS, VINICIUS L.; GUARNIERI, GUILHERME de P.; SILVA, DANILO A. da; WATANABE, TAMIRES; MARUMO, JULIO T.; NERY, JOSE G. An adsorption agent based on chitosan–zeolite composite: environmental and radioactive liquid waste remediation. Environmental Science: Advances, v. 2, n. 3, p. 484–494, 2023. DOI: 10.1039/d2va00148a. Disponível em: http://repositorio.ipen.br/handle/123456789/34064. Acesso em: 20 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.