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<p>This study demonstrates uranium removal from aqueous samples utilizing a self-polymerizing, uranium-selective monomer incorporated into a hydrogel. This work quantifies the equilibrium adsorption capacity and selectivity of a polydopamine (PDA) coated dextran-polyacrylamide-co-polyacrylic acid hydrogel in both aqueous and artificial seawater samples. Batch uptake experiments were performed to quantify the kinetics and adsorption capacity of the PDA coated hydrogel system. The PDA coated hydrogel is found to significantly improve selectivity while only sacrificing 20% of the maximum loading capacity compared to the hydrogel without a PDA coating.</p>

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Polydopamine extractant coated hydrogels for uptake of uranium environmental samples

  • 期刊论文

  • 发表日期：

    2025年10月30日

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  • Cooper L. Tillman,
  • Valery N. Bliznyuk,
  • Oksana M. Nadtoka,
  • Nataliya V. Kutsevol,
  • Timothy A. DeVol

摘要

This study demonstrates uranium removal from aqueous samples utilizing a self-polymerizing, uranium-selective monomer incorporated into a hydrogel. This work quantifies the equilibrium adsorption capacity and selectivity of a polydopamine (PDA) coated dextran-polyacrylamide-co-polyacrylic acid hydrogel in both aqueous and artificial seawater samples. Batch uptake experiments were performed to quantify the kinetics and adsorption capacity of the PDA coated hydrogel system. The PDA coated hydrogel is found to significantly improve selectivity while only sacrificing 20% of the maximum loading capacity compared to the hydrogel without a PDA coating.