Synthesis of zeolites using fly ash and their application in removing heavy metals from waters

被引：28
作者：
Wang, YX [1 ]
Guo, YL
Yang, ZH
Cai, HS
Querol, X
机构：
[1] China Univ Geosci, Dept Hydrogeol & Environm Engn, Wuhan 430074, Peoples R China
[2] China Univ Min & Technol, Minist Educ China, Coal Resource Lab, Beijing 100083, Peoples R China
[3] CSIC, Inst Earth Sci Jaume Almera, Barcelona 08028, Spain
来源：
SCIENCE IN CHINA SERIES D-EARTH SCIENCES | 2003年 / 46卷 / 09期
基金：
中国国家自然科学基金;
关键词：
coal fly ash; hydrothermal synthesis; zeolite; heavy metal; wastewater; adsorption;
D O I：
10.1360/02yd0487
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Three types of zeolite (NaP1 zeolite, analcime and chabazite) were hydrothermally synthesized by reacting fly ash with NaOH solution. The maximum conversion rate from fly ash to single zeolite is about 40%-75%, and the total conversion rate 60%-80%. The synthesis experimental results indicate that factors including vortex, viscosity, temperature, reaction time, and NaOH concentration in the reaction system strongly affect the type and conversion rate of zeolites. The batch experiments of removing Cu2+, Pb2+ and Cd2+ from wastewaters show that the adsorption capacity of zeolites synthesized is higher than that of fly ash.
引用
收藏
页码：967 / 976
页数：10
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