东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (9): 1289-1292.DOI: 10.12068/j.issn.1005-3026.2017.09.016

• 材料与冶金 • 上一篇    下一篇

壳聚糖/硅藻土复合材料的制备及其对Hg2+吸附

胡建设, 张昊琳, 田有粮, 刘柯利   

  1. (东北大学 理学院, 辽宁 沈阳110819)
  • 收稿日期:2016-04-15 修回日期:2016-04-15 出版日期:2017-09-15 发布日期:2017-09-08
  • 通讯作者: 胡建设
  • 作者简介:胡建设( 1971-),男,河南周口人,东北大学教授,博士生导师.
  • 基金资助:
    北京市卫生局专项重点攻关项目子课题 (2014-1-3011).

Preparation of New Chitosan/Diatomite Composite Materials and Their Adsorption Effect on Mercury Ions

HU Jian-she, ZHANG Hao-lin, TIAN You-liang, LIU Ke-li   

  1. School of Sciences, Northeastern University, Shenyang 110819, China.
  • Received:2016-04-15 Revised:2016-04-15 Online:2017-09-15 Published:2017-09-08
  • Contact: HU Jian-she
  • About author:-
  • Supported by:
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摘要: 以硅藻土与壳聚糖为原料,戊二醛作为交联剂,制备了一种复合吸附材料,研究了其对水中Hg2+的吸附性能,探讨了复合吸附材料的配比、Hg2+初始浓度、吸附材料的质量与吸附时间等因素对Hg2+吸附性能的影响.研究表明,随着硅藻土含量的增加,对应Hg2+的吸附容量与去除率均下降;此外,随着Hg2+初始浓度的提高,其去除率降低,而吸附容量却提高;增加吸附剂的质量,Hg2+的吸附容量与去除率也相应增加;当吸附时间在45min以内,对应的吸附容量与去除率随吸附时间的增加而提高,当吸附时间超过45min后,吸附容量与去除率基本不变.

关键词: 壳聚糖, 硅藻土, 复合材料, 汞离子, 吸附作用

Abstract: A new polymer composite adsorption material of diatomite and chitosan was prepared using a crosslinking agent of glutaraldehyde and its adsorption property of mercury ions (Hg2+) in water was studied. The effects of the composite material ratio, initial concentration of Hg2+, the weight of adsorption material and adsorption time on the Hg2+ removal property were investigated. The results show that the Hg2+ removal rate and adsorption capacity decrease with the increasing diatomite content in the composite. However, the Hg2+ removal rate decreases and adsorption capacity increases with the increasing initial concentration of Hg2+. The Hg2+ removal rate and adsorption capacity increases with the increasing weight of the adsorption material. When the adsorption time is less than 45min, the corresponding Hg2+ removal rate and adsorption capacity increases with increasing adsorption time, while they become nearly constant after 45min.

Key words: chitosan, diatomite, composite material, mercury ions, adsorption effect

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