Eco‐Friendly Biosorption of Uranium from Aqueous Solutions Using Sepiolite‐Cavex CA37 Composite Biosorbent: Fid-Bau Portal

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Eco‐Friendly Biosorption of Uranium from Aqueous Solutions Using Sepiolite‐Cavex CA37 Composite Biosorbent

Erden, Kadriye Esen / Donat, Ramazan

Cavex CA37 is a dental material used for positive tooth impressions. After the mold is taken, it hardens through a fast‐chemical reaction with air, then becomes waste after usage. In this study, natural sepiolite and Cavex CA37 are mixed at certain ratios to obtain a composite SCX‐37 biosorbent that is used for the biosorption of ${UO}_{2}^{2 +}$ ions from a synthetic aqueous solution. Parameters affecting biosorption, such as solution pH, ambient temperature, contact time, and ${UO}_{2}^{2 +}$ ion concentration, are investigated. The biosorption of ${UO}_{2}^{2 +}$ ions on SCX‐37 reaches equilibrium in 120 min with 97.56% efficiency at 30 °C and pH 4. The isotherms (Langmuir, Freundlich, and D‐R) and thermodynamic values of the biosorption of ${UO}_{2}^{2 +}$ ions on the SCX‐37 biosorbent are calculated according to the obtained data. It is determined that there is a high correlation between experimental results and all three isotherm models. The adsorption capacity is found to be 41.39 mg g⁻¹. The biosorption of ${UO}_{2}^{2 +}$ ions onto the SCX37 biosorbent is a chemisorption process with an adsorption energy of 40.50 kJ mol⁻¹.

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Eco‐Friendly Biosorption of Uranium from Aqueous Solutions Using Sepiolite‐Cavex CA37 Composite Biosorbent

Erden, Kadriye Esen / Donat, Ramazan

Cavex CA37 is a dental material used for positive tooth impressions. After the mold is taken, it hardens through a fast‐chemical reaction with air, then becomes waste after usage. In this study, natural sepiolite and Cavex CA37 are mixed at certain ratios to obtain a composite SCX‐37 biosorbent that is used for the biosorption of ${UO}_{2}^{2 +}$ ions from a synthetic aqueous solution. Parameters affecting biosorption, such as solution pH, ambient temperature, contact time, and ${UO}_{2}^{2 +}$ ion concentration, are investigated. The biosorption of ${UO}_{2}^{2 +}$ ions on SCX‐37 reaches equilibrium in 120 min with 97.56% efficiency at 30 °C and pH 4. The isotherms (Langmuir, Freundlich, and D‐R) and thermodynamic values of the biosorption of ${UO}_{2}^{2 +}$ ions on the SCX‐37 biosorbent are calculated according to the obtained data. It is determined that there is a high correlation between experimental results and all three isotherm models. The adsorption capacity is found to be 41.39 mg g⁻¹. The biosorption of ${UO}_{2}^{2 +}$ ions onto the SCX37 biosorbent is a chemisorption process with an adsorption energy of 40.50 kJ mol⁻¹.

Eco‐Friendly Biosorption of Uranium from Aqueous Solutions Using Sepiolite‐Cavex CA37 Composite Biosorbent

Erden, Kadriye Esen / Donat, Ramazan

Cavex CA37 is a dental material used for positive tooth impressions. After the mold is taken, it hardens through a fast‐chemical reaction with air, then becomes waste after usage. In this study, natural sepiolite and Cavex CA37 are mixed at certain ratios to obtain a composite SCX‐37 biosorbent that is used for the biosorption of ${UO}_{2}^{2 +}$ ions from a synthetic aqueous solution. Parameters affecting biosorption, such as solution pH, ambient temperature, contact time, and ${UO}_{2}^{2 +}$ ion concentration, are investigated. The biosorption of ${UO}_{2}^{2 +}$ ions on SCX‐37 reaches equilibrium in 120 min with 97.56% efficiency at 30 °C and pH 4. The isotherms (Langmuir, Freundlich, and D‐R) and thermodynamic values of the biosorption of ${UO}_{2}^{2 +}$ ions on the SCX‐37 biosorbent are calculated according to the obtained data. It is determined that there is a high correlation between experimental results and all three isotherm models. The adsorption capacity is found to be 41.39 mg g⁻¹. The biosorption of ${UO}_{2}^{2 +}$ ions onto the SCX37 biosorbent is a chemisorption process with an adsorption energy of 40.50 kJ mol⁻¹.

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Titel:

Eco‐Friendly Biosorption of Uranium from Aqueous Solutions Using Sepiolite‐Cavex CA37 Composite Biosorbent

Beteiligte:

Erden, Kadriye Esen (Autor:in) / Donat, Ramazan (Autor:in)

Erschienen in:

CLEAN – Soil, Air, Water ; 51

Erscheinungsdatum:

01.06.2023

Format / Umfang:

10 pages

ISSN:

1863-0650 , 1863-0669

DOI:

https://doi.org/10.1002/clen.202200313

Medientyp:

Aufsatz (Zeitschrift)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

adsorption , biosorption , SCX‐37 , sepiolite , sorption isotherms

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