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Synergistic effects of different co-monomers on the uranium adsorption performance of amidoximated polyethylene nonwoven fabric in natural seawater

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Abstract

Several co-monomers were co-grafted with acrylonitrile onto polyethylene nonwoven fabric to prepare amidoximated sorbents. The grafted co-monomer was found to play an important role in the uranium adsorption capacity and sorption selectivity of amidoximated sorbent in natural seawater in the following order: acrylamide (AAm) < acrylic acid (AA) < itaconic acid (ITA) < methacrylic acid (MAA), which agreed well with the result in U-spike brine. The amidoximated sorbent co-grafted with MAA exhibited the highest uranium adsorption capacity (1.05 mg/g) and the best uranium/vanadium sorption selectivity (U/V mass ratio: ~ 0.95) after 56 days of immersion in natural seawater.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant Numbers 11605275, 11675247). The uranium adsorption test in natural seawater was performed under the DOE-CAS NEST Cooperation agreement. We thank Dr. Gary A. Gill and his group for the conduction of marine test at MSL of PNNL.

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Correspondence to Guozhong Wu.

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Li, R., Ma, H., Xing, Z. et al. Synergistic effects of different co-monomers on the uranium adsorption performance of amidoximated polyethylene nonwoven fabric in natural seawater. J Radioanal Nucl Chem 315, 111–117 (2018). https://doi.org/10.1007/s10967-017-5639-6

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  • DOI: https://doi.org/10.1007/s10967-017-5639-6

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