Journal of Northeastern University Natural Science ›› 2017, Vol. 38 ›› Issue (9): 1289-1292.DOI: 10.12068/j.issn.1005-3026.2017.09.016

• Materials & Metallurgy • Previous Articles     Next Articles

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
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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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