Study of Adsorption Behavior of Cd2+ on Aluminum Oxide Nanoparticles

被引：0
|
作者：
Liang, Xizhen [1 ,2 ]
Zhou, Tao [2 ]
Huang, Guolin [1 ]
Zhou, Yueming [1 ]
机构：
[1] East China Inst Technol, Minist Educ, Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
[2] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
来源：
FUNDAMENTAL OF CHEMICAL ENGINEERING, PTS 1-3 | 2011年 / 233-235卷
关键词：
Aluminum oxide (Al2O3) Nanoparticles; Cd2+; Adsorption; REMOVAL; WATER; ION;
D O I：
10.4028/www.scientific.net/AMR.233-235.390
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A new method using aluminum oxide (Al2O3) as solid-phase extraction coupled with atomic absorption spectrum(AAS) was proposed. The adsorption behavior of Al2O3 nanoparticles towards Cd2+ was investigated by AAS, and the adsorption pH, isotherms as well as capacities were obtained. It was found that the adsorption rates of Cd2+ was more than 98% in pH 8.50 similar to 10.00. The adsorption equilibrium data of Cd2+ were well fitted with the Langmuir isothermal equation. The kinetic experimental data correlated well with the pseudo-second-order kinetic model. Adsorption enthalpy of standard (Delta H-theta) was 5.23 kJ mol(-1), which indicated that adsorption reaction was an endothermal process in the range of being studied temperature. It was sufficient for 1.0mol L-1 HCl to elute Cd2+ on Al2O3 nanoparticles and recovery rate was more than 95%.
引用
收藏
页码：390 / +
页数：2
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