Pb2+ Adsorption by Calcium Silicate Hydrate Synthesized from Steel Slag

被引：0
|
作者：
Wang, Shuping [1 ,2 ]
Peng, Xiaoqin [2 ]
Li, Mei [2 ]
Tang, Luping [1 ]
机构：
[1] Chalmers Univ Technol, Div Bldg Technol, SE-41296 Gothenburg, Sweden
[2] Chongqing Univ, Coll Mat Sci & Engn, CN-400045 Chongqing, Peoples R China
来源：
NORDIC CONCRETE RESEARCH | 2015年 / 52卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Pb2+ adsorption; calcium silicate hydrates; steel slag; adsorption model;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This study aims to investigate the adsorption properties of Pb2+ by calcium silicate hydrate synthesized from steel slag. The influence of various factors on the adsorption properties was investigated. The static desorption test was conducted to investigate the leaching of Pb2+ . The kinetic model and isotherm model of adsorption are then discussed. Results show that Pb2+ adsorption capacity of C-S-H depends on Ca/Si ratios. Kinetic adsorption data is in consistence with Lagergren pseudosecond-order model, and steady-state data fits to Langmuir isothermal model. Leaching result demonstrates that Pb2+ ions are stably adsorbed by C-S-H structures.
引用
收藏
页码：77 / 92
页数：16
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