Synthesis of LTA zeolite on corundum supports: Preliminary assessment for heavy metal removal from waste water

被引：2
|
作者：
Jacas, A. [1 ]
Ortega, P. [2 ]
Velasco, M. J. [2 ]
Camblor, M. A. [1 ]
Rodriguez, M. A. [2 ]
机构：
[1] CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain
[2] CSIC, Inst Ceram & Vidrio, E-28049 Madrid, Spain
来源：
BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO | 2012年 / 51卷 / 05期
关键词：
zeolite; membrane; hydrothermal synthesis; removal; heavy metals; ionic exchange; LOW-COST SORBENTS; ION-EXCHANGE; ADSORPTION; CHROMIUM; FEASIBILITY; ADSORBENTS; SORPTION; LEAD;
D O I：
10.3989/cyv.352012
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effectiveness of materials based on LTA Zeolite as active phase, for their incorporation into systems aimed at the removal of heavy metals on waste water is evaluated in a preliminary way. This type of Zeolite with the main channel of a minimum free diameter of 0,41 nm and a low SiO2/Al2O3 ratio is an interesting molecular sieve, which in turn display a high ion exchange capacity. From this point of view, LTA Zeolite crystals were obtained "in situ" by hydrothermal synthesis and characterized by x ray diffraction (XRD) and scanning electron microscopy (SEM). We have studied the effect of hydrothermal synthesis time at 378 K. Likewise, the removal capacity of heavy metal from the active phase was evaluated in as a first step on diluted solutions of cooper salts at slightly acidic pH (similar to 4,7).
引用
收藏
页码：249 / 254
页数：6
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