高等学校化学研究 ›› 2010, Vol. 26 ›› Issue (3): 355-359.
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. 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
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. 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
摘要：
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.