Abstract
A novel polyacrylic acid–ammonium phosphomolybdate (PAA–AMP) adsorbent capable of highly selective adsorption of Cs+ in robust acid solutions was developed. The effects of adsorbent dosage, pH, contact time, temperature, and competing ions on the Cs+ removal performance were investigated. The adsorbent rapid (30 min) selective adsorption of Cs+ in a wide pH (pH = 1–12) range, with little effect of competing ions on the adsorption, and a maximum adsorption capacity of 66.71 mg g−1. The adsorption data fitted well with pseudo-second-order kinetics and the Langmuir isotherm model, and adsorption mechanism is ion exchange between NH4+ and Cs+.
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Funding
This research was Supported by the Natural Science Foundation of Sichuan Province, China (No. 2022NSFSC1228, 2022JDTD0017); and CAEA Innovation Center for Geological Disposal of High-Level Radioactive Waste (No. CXJJ21102209); and Doctoral Foundation of Southwest University of Science and Technology (Grant No. 23zx7111).
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The manuscript was written through contributions of all authors. CF: Conceptualization, Investigation, Formal analysis, Methodology, Writing—original draft. XW: Writing—review & editing, Validation. JL: Formal analysis, Validation. JC: Investigation, Formal analysis. SZ: Supervision, Writing—review & editing. MY: Supervision, Resources, Conceptualization, Project administration.
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Fu, C., Wei, X., Lian, J. et al. A facile synthesis of polyacrylic acid–ammonium phosphomolybdate microspheres for the highly selective removal of cesium. J Radioanal Nucl Chem 333, 2207–2220 (2024). https://doi.org/10.1007/s10967-024-09416-7
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DOI: https://doi.org/10.1007/s10967-024-09416-7