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›› 2010, Vol. 10 ›› Issue (6): 1200-1205.

• 材料工程专栏 • 上一篇    下一篇

颗粒化铁-铝-铈纳米吸附剂的除氟性能

陈林 王亭杰 金涌 张昱   

  1. 清华大学化学工程系 清华大学化工系 清华大学化工系 中国科学院生态环境研究中心
  • 收稿日期:2010-10-08 修回日期:2010-11-12 出版日期:2010-12-20 发布日期:2010-12-20
  • 通讯作者: 王亭杰

Adsorption Characteristics of Fluoride with Granulated Fe-Al-Ce Nano-adsorbent

CHEN Lin WANG Ting-jie, JIN Yong ZHANG Yu，   

  1. Department of Chemical Engineering, Tsinghua University Department of Chemical Engineering, Tsinghua Universit Department of Chemical Engineering, Tsinghua University Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences,
  • Received:2010-10-08 Revised:2010-11-12 Online:2010-12-20 Published:2010-12-20
  • Contact: WANG Ting-jie,

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被引次数

1

摘要： 采用在流化床中喷雾包覆方法将纳米吸附剂包覆在玻璃珠表面制备颗粒化吸附剂，考察了所制颗粒化纳米铁-铝-铈复合氧化物吸附剂在含氟水中的除氟性能. 结果表明，含氟初始浓度为10 mg/L时，颗粒化吸附剂的吸附速率符合拟一级反应动力学模型，吸附等温线符合Langmuir吸附模型，饱和吸附量达5.9 mg/g. 吸附容量随含氟水初始pH值升高而降低，吸附过程中溶液pH值逐渐趋近于中性；含氟水中其他阴离子对F-的吸附存在不同程度的竞争，竞争离子的影响顺序为NO3-"Cl-

关键词: 吸附, 颗粒化, 除氟, 包覆, 流化床

Abstract: The Fe-Al-Ce trimetal oxide nano-adsorbent was coated onto glass beads in a fluidized bed by spraying, and the resulting granules were used in a packed bed for fluoride removal from drinking water. The adsorption characteristics of fluoride with the adsorbent granules were studied. For the initial fluoride concentration at 10 mg/L, the fluoride adsorption rate obeyed the pseudo-first order kinetic model. The adsorption isotherm data well fitted to the Langmuir isotherm, and the maximum adsorption capacity was 5.9 mg/g. The adsorption capacity of the granules decreased with the increase of initial pH value, and the solution pH value changed to neutral regardless of the initial solution being acidic or basic. The degree of the effect of competitive ions on the adsorption capacity was in the following order: NO3-"Cl-

Key words: adsorption, granulation, fluoride removal, coating, fluidized bed

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