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Zirconium-Loaded Chelating Resin and Its Fluoride Adsorption Properties in Aqueous Solutions

Environmental Science and Engineering, ISSN: 1863-5539, Page: 1159-1166
2024
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Conference Paper Description

In this paper, a poly ligand exchanger, Zirconium-loaded chelating resin bearing the functional group of amine phosphonic acid was prepared for the removal of fluoride in aqueous solutions. The effects of contact time, pH and resin dosage were conducted at different conditions. Batch adsorption equilibrium experiments showed that the optimal conditions for the adsorption of fluorine by amine phosphonic acid chelate resin were pH 1 and adsorption contact time 150 min at room temperature 25 °C. The maximum adsorption capacity of zirconium-loaded resin for fluoride ion reached 99.8 mg/g. Thermodynamic studies show that Freundlich model was the best fitted model compared with Langmuir isotherm model for the removal of fluoride by zirconium-loaded resin.

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