树脂基钕-铁双金属氢氧化物纳米复合材料及制备方法、在深度去除水中氟离子中的应用

By loading neodymium hydroxide and iron hydroxide nanoparticles onto polystyrene anion exchange resin to form a resin-based neodymium-iron bimetallic hydroxide nanocomposite material, the problems of poor selectivity and secondary pollution of traditional adsorption materials are solved, and a highly efficient and stable fluoride ion removal effect is achieved.

CN118002096BActive Publication Date: 2026-07-17ZHEJIANG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV OF TECH
Filing Date
2024-02-27
Publication Date
2026-07-17

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Abstract

本发明公开了树脂基钕‑铁双金属氢氧化物纳米复合材料及制备方法、在深度去除水中氟离子中的应用。本发明以聚苯乙烯阴离子交换树脂为基体负载钕‑铁双金属纳米氢氧化物所得到吸附材料可深度去除水体中氟离子，处理废水的步骤为：调节含氟废水的pH值并过滤，滤液通过填充树脂基纳米复合材料的吸附塔，得到深度净化的水体；当吸附塔出水氟浓度达到穿透点时停止吸附，使用盐碱（NaOH+NaCl）溶液对复合材料进行脱附再生和转型；最后将复合材料用水清洗至中性，供循环使用。试验发现在水体pH值为3.0~7.0时，且共存有高浓度Cl‑、SO42‑、NO3‑、HCO3‑的情况下，仍能使出水的氟离子含量从0.05~20 mg / L降低至0.01 mg / L以下（以F计），且材料能重复使用。
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