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第 35 卷第 9 期 精 细 化 工 Vol.35, No.9
201 8 年 9 月 FINE CHEMICALS Sept. 2018

水处理技术与环境保护
改性 Zr-Na/Zeolite 双功能沸石脱除水溶液中

氨氮和磷性能

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胡佩雷，徐华龙，沈 伟
（复旦大学 化学系，上海分子催化和功能材料实验室，先进材料实验室，上海 200433）

摘要：采用氯化钠离子交换和氯氧化锆沉积-沉淀两步法改性天然沸石，得到具有脱除水中氨氮和磷的双功能锆
钠改性天然沸石（Zr-Na/Zeolite）。考察了 Zr-Na/Zeolite 在不同 pH、氨氮和磷初始质量浓度和温度下对氨氮溶液、
含磷溶液及氮磷共存溶液的吸附情况。结果表明，Zr-Na/Zeolite 能够在保持 Na 改性沸石（Na/Zeolite）优良的
吸附氨氮性能的基础上，极大地提高吸附磷的能力。在不同 pH 下，Zr-Na/Zeolite 吸附氨氮和磷的效果呈现不同
的规律。对于氨氮，水溶液 pH 在 4~8 时 Zr-Na/Zeolite 具有最佳吸附性能，最高吸附量达到 4.5 mg/g。对于含磷
阴离子，脱磷能力随 pH 的升高而降低，吸附量从 pH=2 时的 4.71 mg/g 降到 pH=10 时的 2.20 mg/g。当 Zr-Na/Zeolite
投加量为0.2 g，氨氮和磷初始质量浓度从10 mg/L提高到200 mg/L时，氨氮和磷的吸附量分别从1.42和2.46 mg/g
提高到 11.60 和 11.80 mg/g。溶液温度从 25 ℃升高到 45 ℃时，氨氮的吸附量提高了 10%，磷的吸附量提高了
11%。磷和氨氮的吸附过程符合准二级动力学模型。0.1 mol/L NaOH 和 1.0 mol/L NaCl 混合溶液可以再生
Zr-Na/Zeolite，循环吸附 14 次后，吸附效率几乎保持不变。
关键词：氯化钠；锆；吸附；磷；氨氮；双功能沸石；水处理技术与环境保护
中图分类号：O69 文献标识码：A 文章编号：1003-5214 (2018) 09-1601-08

Removal of Ammonium and Phosphate from Aqueous Solution by
Dual-Functional Zr-Na Modified Zeolite

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HU Pei-lei, XU Hua-long, SHEN Wei
（Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Laboratory of Advanced Materials,
Department of Chemistry, Fudan University, Shanghai 200433, China）

Abstract: Sodium and zirconium modified zeolite (Zr-Na/Zeolite) was prepared through ion exchange of
sodium chloride and deposition of zirconyl chloride octahydrate. The effects of pH value, ammonium and
phosphate initial mass concentration of adsorbate and temperature on the removal of ammonium and/or
phosphate from aqueous solution containing ammonium, phosphate, and ammonium & phosphate by
Zr-Na/Zeolite were investigated. The results showed that Zr-Na/Zeolite had a significant enhancement on
phosphate adsorption while kept good ammonium adsorption efficiency compared with Na/Zeolite. The pH
value of solution had a different influence on the adsorption efficiency of ammonium and phosphate. The
ammonium adsorption performance was relatively high at pH 4~8 and the maximum adsorption capacity
was 4.5 mg/g. The phosphate adsorption performance decreased gradually with increasing of pH value.
When the pH value of solution changed from 2 to 10, the adsorption capacity of phosphate decreased from
4.71 mg/g to 2.20 mg/g. When the dosage of Zr-Na/Zeolite was 0.2 g and the ammonium and phosphate
initial mass concentration of adsorbate increased from 10 mg/L to 200 mg/L, the adsorption capacities of
ammonium and phosphate increased from 1.42 mg/g to 11.60 mg/g and 2.46 mg/g to 11.80 mg/g. When the
temperature of solution increased from 25 ℃ to 45 ℃, the adsorption capacity of ammonium increased by
10%, and that of phosphate increased by 11%. The process of ammonium and phosphate adsorption by

收稿日期：2017-08-02; 定用日期：2017-12-22; DOI: 10.13550/j.jxhg.20170626
基金项目：上海市科学技术委员会资助项目（14DZ2273900）
作者简介：胡佩雷（1989—），男，硕士。联系人：沈 伟（1966—），男，教授，电话：021-65642401，E-mail：wshen@fudan.edu.cn。