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

页码：390 / +

页数：2

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