Studying the Sorption of Uranyl Ions from Aqueous Solutions with the Structured 4-Isopropenylphenol–Phenol–Formaldehyde Copolymer

Mehdiyeva, G. M.; Bairamov, M. R.; Nagiev, Dzh. A.; Agaeva, M. A.; Kulieva, Sh. Dzh.

doi:10.1134/s0036024421040178

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…Our studies have previously shown [10] that effective sorbents for the extraction of uranyl ions from aqueous systems are crosslinked copolymers based on alkenyl-substituted phenols, formaldehyde, and maleic anhydride.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Carboxylate Type Sorbent Based on Cooligomers of 2-Propenylphenol and Formaldehyde and Study of Their Functional Properties for Sorption of Uranyl Ions in Model Systems

Bayramov¹,

Maharramov²,

Mehdiyeva³

et al. 2023

Chemical Problems

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Alkaline synthesis of double co-oligomers of 2-propenylphenol and formaldehyde (synthons) was carried out at 92-950C, for 3 hours and ratio of 1:2.5 mol (their yield are 93% of theory)Interaction of maleic anhydride with the obtained olygomers at 800C in the presence of 0.5% benzoyl peroxide for 10 hours produced copolymers of a three-dimensional cross-linked structure (with a yield of 90%). By treating them with hot water, a sorbent was obtained to contain both propenyl and carboxylate fragments in the structure - active centers of chemisorption. The functional sorption properties of the copolymer were studied under static conditions, in model water systems. The influence of the pH of the medium, the concentration of uranyl ions and the exposure time on the degree of their sorption at room temperature were studied and it was found that the best results are achieved at pH 6 and for 24 hours (R=93%). Uranyl ions can be easily desorbed with mineral acid and the crosslinked copolymers can be reused.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Carboxylate Type Sorbent Based on Cooligomers of 2-Propenylphenol and Formaldehyde and Study of Their Functional Properties for Sorption of Uranyl Ions in Model Systems

Bayramov¹,

Maharramov²,

Mehdiyeva³

et al. 2023

Chemical Problems

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Acrylonitrile-Structured Ternary Co-oligomers of 4-Isopropenylphenol, Phenol, and Formaldehyde as Sorbents for Recovery of Uranyl Ions from Aqueous Systems

Bairamov,

Mehdiyeva,

Nagiev

et al. 2023

Russ J Appl Chem

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Acrylonitrile-Structured Ternary Co-oligomers of 4-Isopropenylphenol, Phenol, and Formaldehyde as Sorbents for Recovery of Uranyl Ions from Aqueous Systems

Bayramov,

Mekhtieva,

Nagiev

et al. 2023

Žurnal prikladnoj himii

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Triple co-oligomers of 4-isopropenylphenol, phenol and formaldehyde were synthesized and used for the first time as precursors in the structuring reaction in the presence of acrylonitrile and the initiator benzoyl peroxide. The yield of cross-linked copolymers is 84% (of theory). The use of hydrolyzed cross-linked copolymers is shown to be effective as sorbents for the extraction of UO22+ ions from model aqueous systems under batch conditions, and the degree of their sorption significantly depends on the medium pH, the initial concentration of UO22+ ions and the exposure time. The best results were achieved at pH 7 and 9, at which the degree of extraction of UO22+ ions from an aqueous solution with their initial concentration of 134 ± 0.5 mg L–1 is ~93.5% (room temperature, 24 h), while the sorption capacity of the cross-linked copolymer is ~210 mg g–1. The highest sorption capacity of the copolymer reaches 300 ± 30 mg g–1. The possibility of regeneration of the sorbent with mineral acid (НNO3, HCl) was revealed; the maximum degree of desorption of UO22+ ions is ~91%.

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Studying the Sorption of Uranyl Ions from Aqueous Solutions with the Structured 4-Isopropenylphenol–Phenol–Formaldehyde Copolymer

Cited by 3 publications

References 10 publications

Synthesis of Carboxylate Type Sorbent Based on Cooligomers of 2-Propenylphenol and Formaldehyde and Study of Their Functional Properties for Sorption of Uranyl Ions in Model Systems

Synthesis of Carboxylate Type Sorbent Based on Cooligomers of 2-Propenylphenol and Formaldehyde and Study of Their Functional Properties for Sorption of Uranyl Ions in Model Systems

Acrylonitrile-Structured Ternary Co-oligomers of 4-Isopropenylphenol, Phenol, and Formaldehyde as Sorbents for Recovery of Uranyl Ions from Aqueous Systems

Acrylonitrile-Structured Ternary Co-oligomers of 4-Isopropenylphenol, Phenol, and Formaldehyde as Sorbents for Recovery of Uranyl Ions from Aqueous Systems

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