Synthesis of Mesoporous Adsorbent and its Application for Heavy Metal Ions Removal from Aqueous Solution

被引：0
作者：
Wu, Shengju [1 ]
Wu, Cuirong [2 ]
Li, Fengting [1 ]
Xu, Ran [1 ]
机构：
[1] Tongji Univ, Coll Environm Sci & Engn, 1239 Siping Rd, Shanghai 200092, Peoples R China
[2] Zibo Vocat Coll, Dept Chem Engn, Shandong 255013, Peoples R China
来源：
2ND INTERNATIONAL SYMPOSIUM ON AQUA SCIENCE, WATER RESOURCE AND LOW CARBON ENERGY | 2010年 / 1251卷
关键词：
Mesoporous; Adsorbent; Heavy Metal; Regeneration; Removal Rate; Adsorption Kinetics; SELECTIVE SEPARATION; SILICA; SBA-15; ADSORPTION; SORBENT; CADMIUM;
D O I：
10.1063/1.3456347
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The mesoporous silicas were synthesized via the evaporation-induced self-assembly (EISA) in the experiment. Cetyltrimethyl ammonium bromide (CTAB) was used as the template, and the silicon source was tetraethoxyorthosilicate (TEOS). The mesoporous silicas were characterized by nitrogen adsorption-desorption analysis, FTIR, TEM and SEM. The mesoporous silicas (adsorbent) exhibited higher pore diameter (centered at 5.57 nm), BET surface area (457.3 m(2).g(-1)) and pore volume (0.563 cm(3).g(-1)).The mesoporous silicas were used as the adsorbent to remove the heavy metal ions from aqueous solution. The following order of equilibrium adsorption capacity for Cu2+, Co2+, Ag+ and As3+ on adsorbent was: Ag+> Cu2+> Co2+> As3+. Analysis of adsorption kinetics showed that Cu2+, Co2+, Ag+ and As3+ adsorption fit the pseudo-second-order nonlinear model significantly. The removal rate for heavy metal ions was high, and the adsorbent can be regenerated by acid treatment without altering its properties.
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页码：336 / +
页数：2
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