Highly efficient uranium extraction by aminated lignin-based thermo-responsive hydrogels

Jiahui Zhu; Yinwei Luo; Jingxuan Wang; Jing Yu; Qi Liu; Jingyuan Liu; Rongrong Chen; Peili Liu; Jun Wang

doi:10.1016/j.molliq.2022.120744

Highly efficient uranium extraction by aminated lignin-based thermo-responsive hydrogels

Jiahui Zhu, Yinwei Luo, Jingxuan Wang, Jing Yu^*, Qi Liu, Jingyuan Liu, Rongrong Chen, Peili Liu, Jun Wang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

In this work, triethylenetetramine (TETA) functional lignin (AL) has been prepared, and the aminated lignin-based thermo-responsive (AL-PNIPAM) hydrogels were prepared by radical polymerization. AL-PNIPAM hydrogels exhibited a satisfactory adsorption performance for uranium aqueous solution, with a maximum uranium adsorption capacity of 285.5 mg·g⁻¹ at 298 K. The study of adsorption kinetics showed that the adsorption model of AL-PNIPAM hydrogels was more consistent with pseudo-second-order kinetic equation, confirming the prominent chemical adsorption of the adsorption process. More importantly, it showed high selectivity towards uranium (VI), and the K_d was 3.82 × 10⁵ mL·g⁻¹ in simulated seawater. And uranium (VI) can be effectively desorbed, the best desorption was achieved at 15 °C using dilute nitric acid solution with a maximum resolution efficiency of 76 %. Therefore, AL-PNIPAM hydrogels could be considered as a potential candidate in the field of uranium extraction from seawater.

Original language	English
Article number	120744
Journal	Journal of Molecular Liquids
Volume	368
DOIs	https://doi.org/10.1016/j.molliq.2022.120744
Publication status	Published - 15 Dec 2022
Externally published	Yes

Keywords

Hydrogels
Lignin
Seawater
Uranium extraction

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10.1016/j.molliq.2022.120744

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@article{285bddca24af42679fec3ab229a5ca92,

title = "Highly efficient uranium extraction by aminated lignin-based thermo-responsive hydrogels",

abstract = "In this work, triethylenetetramine (TETA) functional lignin (AL) has been prepared, and the aminated lignin-based thermo-responsive (AL-PNIPAM) hydrogels were prepared by radical polymerization. AL-PNIPAM hydrogels exhibited a satisfactory adsorption performance for uranium aqueous solution, with a maximum uranium adsorption capacity of 285.5 mg·g−1 at 298 K. The study of adsorption kinetics showed that the adsorption model of AL-PNIPAM hydrogels was more consistent with pseudo-second-order kinetic equation, confirming the prominent chemical adsorption of the adsorption process. More importantly, it showed high selectivity towards uranium (VI), and the Kd was 3.82 × 105 mL·g−1 in simulated seawater. And uranium (VI) can be effectively desorbed, the best desorption was achieved at 15 °C using dilute nitric acid solution with a maximum resolution efficiency of 76 %. Therefore, AL-PNIPAM hydrogels could be considered as a potential candidate in the field of uranium extraction from seawater.",

keywords = "Hydrogels, Lignin, Seawater, Uranium extraction",

author = "Jiahui Zhu and Yinwei Luo and Jingxuan Wang and Jing Yu and Qi Liu and Jingyuan Liu and Rongrong Chen and Peili Liu and Jun Wang",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = dec,

day = "15",

doi = "10.1016/j.molliq.2022.120744",

language = "English",

volume = "368",

journal = "Journal of Molecular Liquids",

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TY - JOUR

T1 - Highly efficient uranium extraction by aminated lignin-based thermo-responsive hydrogels

AU - Zhu, Jiahui

AU - Luo, Yinwei

AU - Wang, Jingxuan

AU - Yu, Jing

AU - Liu, Qi

AU - Liu, Jingyuan

AU - Chen, Rongrong

AU - Liu, Peili

AU - Wang, Jun

PY - 2022/12/15

Y1 - 2022/12/15

N2 - In this work, triethylenetetramine (TETA) functional lignin (AL) has been prepared, and the aminated lignin-based thermo-responsive (AL-PNIPAM) hydrogels were prepared by radical polymerization. AL-PNIPAM hydrogels exhibited a satisfactory adsorption performance for uranium aqueous solution, with a maximum uranium adsorption capacity of 285.5 mg·g−1 at 298 K. The study of adsorption kinetics showed that the adsorption model of AL-PNIPAM hydrogels was more consistent with pseudo-second-order kinetic equation, confirming the prominent chemical adsorption of the adsorption process. More importantly, it showed high selectivity towards uranium (VI), and the Kd was 3.82 × 105 mL·g−1 in simulated seawater. And uranium (VI) can be effectively desorbed, the best desorption was achieved at 15 °C using dilute nitric acid solution with a maximum resolution efficiency of 76 %. Therefore, AL-PNIPAM hydrogels could be considered as a potential candidate in the field of uranium extraction from seawater.

AB - In this work, triethylenetetramine (TETA) functional lignin (AL) has been prepared, and the aminated lignin-based thermo-responsive (AL-PNIPAM) hydrogels were prepared by radical polymerization. AL-PNIPAM hydrogels exhibited a satisfactory adsorption performance for uranium aqueous solution, with a maximum uranium adsorption capacity of 285.5 mg·g−1 at 298 K. The study of adsorption kinetics showed that the adsorption model of AL-PNIPAM hydrogels was more consistent with pseudo-second-order kinetic equation, confirming the prominent chemical adsorption of the adsorption process. More importantly, it showed high selectivity towards uranium (VI), and the Kd was 3.82 × 105 mL·g−1 in simulated seawater. And uranium (VI) can be effectively desorbed, the best desorption was achieved at 15 °C using dilute nitric acid solution with a maximum resolution efficiency of 76 %. Therefore, AL-PNIPAM hydrogels could be considered as a potential candidate in the field of uranium extraction from seawater.

KW - Hydrogels

KW - Lignin

KW - Seawater

KW - Uranium extraction

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U2 - 10.1016/j.molliq.2022.120744

DO - 10.1016/j.molliq.2022.120744

M3 - Article

AN - SCOPUS:85141535551

SN - 0167-7322

VL - 368

JO - Journal of Molecular Liquids

JF - Journal of Molecular Liquids

M1 - 120744

ER -

Highly efficient uranium extraction by aminated lignin-based thermo-responsive hydrogels

Abstract

Keywords

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