Electrospinning Preparation of Naa Zeolite Composite Polyacrylonitrile Membranes (Naa@Panms) and Studying On Adsorption Performance for Sr2+
SSRN, ISSN: 1556-5068
2025
- 31Usage
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
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.
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