CRCU

Chemical Research in Chinese Universities ›› 2010, Vol. 26 ›› Issue (3): 355-359.

• Articles • Previous Articles     Next Articles

Preparation of Spherical Silica-supported Biosorbent for Copper Ions Removal in Wastewater Based on Sol-gel Reaction and Simple Treatment with Sodium Hydroxide

ZHENG Li1*, JIANG Feng-hua1, DONG Ping-jun2, ZHUANG Qian-fen2 and LI Feng2*   

  1. 1. Marine Ecology Research Center, First Institute of Oceanograph, State Oceanic Administration, Qingdao 266061, P. R. China;
    2. College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
  • Received:2009-09-09 Revised:2009-10-14 Online:2010-05-25 Published:2010-07-27
  • Contact: ZHENG Li. E-mail: zhengli@fio.org.cn; LI Feng. E-mail: lifeng@qust.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.20775039 and 20602009), the Natural Science Foundation of Shandong Province of China(No.ZR2009BM031 and Q2008B05), the Public Welfare Project of Marine Science Research of China(Nos.200705011 and 200805039) and the Science Research Fund of the First Institute of Oceanograph of China.

PDF (PC)

Abstract:

A new and effective strategy was proposed for preparing new organic-inorganic composite biosorbent with spherical silica as supporting core and chitosan(CS)-based hybrid layer as shell based on sol-gel reaction and simple treatment with sodium hydroxide(NaOH). The coating layer was covalently bound on the supporting silica through polysaccharide incorporated sol-gel process starting from CS and inorganic precursor γ-glycidoxypropyl- trimethoxysiloxane(GPTMS). GPTMS had epoxide groups and cross-linked amine groups of CS to avoid its acidic solubilization. The composite biosorbent had coarse surface due to the wet phase-inversion by treating in NaOH solution. The prepared biosorbent could be used in treating electric plating wastewater.

Key words: Chitosan; Sodium hydroxide; Biosorption; Waste treatment