PlumX Metrics
Embed PlumX Metrics

Electrospinning Preparation of Naa Zeolite Composite Polyacrylonitrile Membranes (Naa@Panms) and Studying On Adsorption Performance for Sr2+

SSRN, ISSN: 1556-5068
2025
  • 0
    Citations
  • 31
    Usage
  • 0
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Usage
    31

Article Description

The NaA zeolite exhibits excellent adsorption performance for 90Sr in radioactive nuclear wastewater. However, the efficient and simple fabrication of NaA into membrane materials remains a critical challenge for its industrial application. In this study, NaA zeolite was uniformly blended with polyacrylonitrile (PAN) to prepare a novel hydrophilicity NaA zeolite composite PAN membrane (NaA@PANMs) via electrospinning technology. A comprehensive analytical characterization was conducted employing a range of techniques, including SEM-EDS, BET, XRD and FT-IR. The results indicate that PAN ensured the structural stability of the membrane. Meanwhile, NaA zeolite is incorporated and could supply more adsorption sites. The oxidation of NaA@PANMs at 200 ℃ resulted in enhanced mechanical strength and stability in warm water (75 °C), along with the acquisition of superior physicochemical properties. In addition, the batch experimental adsorption experiments showed that NaA@PANMs had a high adsorption capacity for Sr2+ ions, reaching 59.10 mg/g (removal rate of 98.50 %) at pH 6, with a maximum adsorption capacity of 85.21 mg/g at 298 K. The adsorption kinetics and thermodynamics were respectively consistent with pseudo-second-order and the Langmuir isotherm model. In the presence of coexisting ions, the Kd values of NaA@PANMs for Sr2+ were 3.8, 7.1, and 22.0 times higher than those for Ca2+, Mg2+, and K+, respectively. Additionally, 0.9 g NaA@PANMs demonstrated excellent dynamic adsorption performance for Sr2+ solutions at a flow rate of 0.25 mL/min. Moreover, the NaA@PANMs can still maintain surface integrity and excellent adsorption performance following irradiation at 300 kGy. The removal rate exceeding 70.00 % after three desorption cycles furtherly indicates potential application for the removal of Sr2+ in actual nuclear wastewater.

Bibliographic Details

Yu Liu; Linqiao Qin; Min Yi; Xinlong Li; Yu She; Kaituo Wang; Tao Han; Erna Wei

Elsevier BV

Multidisciplinary; NaA zeolite; PAN; electrospinning; adsorption; irradiation

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know