Synthesis of Zinc-Aluminum Layered Double Hydroxides and Their Applications in Removal of Technetium from Aqueous Solutions

被引：0

作者：

Rashad, Gh. M. ^{[1
]}

Someda, H. H. ^{[1
]}

机构：

[1] Atom Energy Author, Hot Labs & Waste Management Ctr, Nucl Chem Dept, Cairo, Egypt

来源：

ARAB JOURNAL OF NUCLEAR SCIENCES AND APPLICATIONS | 2015年 / 48卷 / 04期

关键词：

Layered double hydroxide; pertechnetate; sorption;

D O I：

暂无

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Zinc-aluminium layered double hydroxide was synthesized by coprecipitation method in molar ratios Zn : Al 2: 1 and 3: 1. The prepared layered double hydroxides were characterized by Fourer-transform infrared spectra (FTIR), X-ray diffraction (XRD) and scanning electron microscope (SEM). The synthesized layered double hydroxides were used to study the removal of pertechnetate anion (TcO4-) from aqueous solution. The influence of some parameters on pertechnate adsorption, including pH of aqueous solution, contact time and temperature were investigated. The results showed that the sorption process is most effective at a pH of about 3 in the acidic solution. The thermodynamic parameters, such as Delta H-0, Delta S-0 and Delta G(0) clarified that the sorption is an endothermic process accompanied with an increase in the disorder of the system.

引用

页码：22 / 32

页数：11

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