中华医学超声杂志

应用化学 ›› 2011, Vol. 28 ›› Issue (05): 549-554.DOI: 10.3724/SP.J.1095.2011.00398

• 研究论文 • 上一篇    下一篇

聚苯胺/凹凸棒石纳米纤维复合材料对溶液中痕量Cr(VI)的吸附性能

徐惠*,徐垚,陈泳   

  1. (兰州理工大学石油化工学院 兰州 730050)
  • 收稿日期:2010-07-07 修回日期:2010-09-07 出版日期:2011-05-10 发布日期:2011-05-10
  • 通讯作者: 徐惠，教授; Tel:0931-2975872; Fax:0931-2976088; E-mail:xuhui@lut.cn; 研究方向：纳米复合材料
  • 作者简介:徐惠，教授；TEL：13639317927；Fax：0931-2976088；E-mail：xuhui@lut.cn．；研究方向：纳米复合材料
  • 基金资助:
    国家自然科学基金（51062011）资助项目，甘肃省国际科技合作项目（0804WCGA125）

The Adsorption of Trace Cr(VI) in Aqueous Solution by Polyaniline/Attapulgite Nanofiber Composite

XU Hui*, XU Yao, CHEN Yong   

  1. (College of Petrochemical Technology,Lanzhou University of Technology,Lanzhou 730050)
  • Received:2010-07-07 Revised:2010-09-07 Published:2011-05-10 Online:2011-05-10

PDF

1371

被引次数

33

摘要：

采用原位聚合法合成了盐酸掺杂聚苯胺/凹凸棒石黏土(PANI/ATP)纳米纤维复合材料。 研究了它对含痕量Cr(Ⅵ)废水的吸附，考察了物料配比、投料质量、吸附时间、吸附温度和pH值对其吸附性能的影响。 结果表明，复合材料中的物料配比为m(An)∶m(ATP)=2∶1，用量为0.4 g，50 min时对Cr(Ⅵ)的吸附量达到99.8%，符合Langmuir等温吸附方程。 该复合材料充分发挥了有机和无机吸附材料的协同作用，具有成本低、再生性能良好的特点。

关键词: PANI/ATP复合材料, 痕量六价铬离子, 吸附

Abstract:

Polyaniline/attapulgite(PANI/ATP) nanofiber composites doped with hydrochloric acid were prepared by an in situ polymerization method and used for the absorbent of trace Cr(Ⅵ) in effluents of various wastewater. The effects of the mass ratio of the nanocomposite to the aqueous solution, the quality of the PANI/ATP nanofiber composite, adsorptive time and temperature as well as pH value in the solution on the adsorptive performance of PANI/ATP nanofiber composite were investigated. The results indicated that nearly 99.8% of Cr(Ⅵ) could be removed from the solution by PANI/ATP nanofiber composite when the mass ratio of the materials is 2∶1, the quality is 0.4 g, the time is 50 min. The adsorption follows the Langmuir adsorption isotherm. Having the synergetic adsorption capacity originated from its organic and inorganic components, PANI/ATP nanofiber composite is a promising adsorbent for Cr(Ⅵ) because of its high efficiency, cost efficiency and regeneracy.

Key words: composite material of PANI/ATP, trace quantity of Cr (VI, adsorption

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