An environmental material, aluminum-modified cenosphere particles, was synthesized by using composite means of wet and dry method. Static adsorption experiments were conducted to examine effects of adsorbent dosage, pH, competing anions, reaction time and temperature on fluoride removal from aqueous solutions. The results showed that the best pH of fluoride adsorption was at 3, the effect of competing anions on fluoride adsorption was in following order: mixture > dihydric phosphate > sulfate > nitrate, and the maximum adsorption capacity of aluminum-modified cenosphere particles was about 10.2 mg/g when temperature was 298 K, adsorbent dosage was 2.5 g/L, time was 24 h and pH was 3. Experimental data of fluoride adsorption fitted well with the Langmuir adsorption isotherm and indicated the better applicability of pseudo-second-order model.%采用湿法+干法制备铝改性漂珠材料,借助静态吸附实验研究吸附剂用量、pH值、共存离子、反应时间和反应温度对去除水溶液中氟离子性能的影响,并对实验数据进行吸附等温线和动力学拟合.结果表明:铝改性漂珠材料吸附水中氟离子的最佳pH值为3;最佳吸附剂用量2.5 g/L;共存离子影响由强到弱的顺序为H2PO4-,SO42-和NO3-的混合物＞ H2PO4-＞ SO42-＞ NO3-；在温度298 K、吸附剂用量2.5 g/L、pH值为3和反应时间24h的条件下,最大吸附容量约10.2 mg/g;吸附等温线符合Langmuir单层吸附模型；动力学过程符合准二级动力学模型.
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