Adsorption behavior of calcined layered double hydroxides towards removal of iodide contaminants

被引：56

作者：

Liang, Lv ^{[1
]}

Li, Luo

机构：

[1] Zhejiang Univ Technol, W Branch, Zhejiang 324000, Peoples R China

[2] Jinhua Univ, Mat Sci & Chem Engn Inst, Zhejiang 321017, Peoples R China

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2007年 / 273卷 / 01期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

D O I：

10.1007/s10967-007-0740-x

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Calcined layered double hydroxide (CLDH) as a potential adsorbent to remove iodide contaminants was investigated in batch mode. The uptake capacity of calcined LDH is higher than that of LDHs as precursor, due to their different mechanism which is supported by XRD and TG-MS measurements. The influences of CLDH structure, dosage of CLDH, initial concentration of iodide ion and co-existing anions on the removal of iodide ion have been investigated. The applicability of the Langmuir isotherm shows that the maximum uptake capacity was approximately 376 mg/g, and Gibbs free energy (AGO) for the process is -23.8 kJ/mol. The negative AGO value shows the spontaneity of the adsorption process.

引用

页码：221 / 226

页数：6

共 15 条

[1] HYDROTALCITE-TYPE ANIONIC CLAYS: PREPARATION, PROPERTIES AND APPLICATIONS [J].

Cavani, F. ;

Trifiro, F. ;

Vaccari, A. .

CATALYSIS TODAY, 1991, 11 (02) :173-301

[2] Physicochemical characterization and adsorption behavior of calcined Zn/Al hydrotalcite-like compound (HTlc) towards removal of fluoride from aqueous solution [J].

Das, DP ;

Das, J ;

Parida, K .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2003, 261 (02) :213-220

[3]

DUAN X, 1999, Patent No. 9911385

[4] Adsorption of radioactive iodide by natural zeolites [J].

Faghihian, H ;

Maragheh, MG ;

Malekpour, A .

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2002, 254 (03) :545-550

[5] Removal and sequestration of iodide using silver-impregnated activated carbon [J].

Hoskins, JS ;

Karanfil, T .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2002, 36 (04) :784-789

[6] Radioactive iodine waste treatment using electrodialysis with an anion exchange paper membrane [J].

Inoue, H ;

Kagoshima, M ;

Yamasaki, M ;

Honda, Y .

APPLIED RADIATION AND ISOTOPES, 2004, 61 (06) :1189-1193

[7]

Inoue H., 2000, APPL RADIAT ISOTOPES, V52, P1047

[8] Adsorption of fluoride on zirconium (IV)-impregnated collagen fiber [J].

Liao, XP ;

Shi, B .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2005, 39 (12) :4628-4632

[9]

LV L, IN PRESS J HAZARD MA

[10] Uptake of chloride ion from aqueous solution by calcined layered double hydroxides: Equilibrium and kinetic studies [J].

Lv, LA ;

He, J ;

Wei, M ;

Evans, DG ;

Duan, X .

WATER RESEARCH, 2006, 40 (04) :735-743

← 1 2 →