Elaboration of Impregnated Composite for Sorption of Europium and Neodymium Ions from Aqueous Solutions

被引：38
作者：
Naser, A. A. [1 ]
El-Deen, G. E. Sharaf [1 ]
Bhran, Ahmed A. [2 ]
Metwally, S. S. [1 ]
El-Kamash, A. M. [1 ]
机构：
[1] Atom Energy Author, Hot Labs Ctr, Cairo 13759, Egypt
[2] Suez Univ, Fac Petr & Min Engn, Dept Chem & Refining Engn, Suez, Egypt
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2015年 / 32卷
关键词：
Impregnation; Composite; Lanthanides; Kinetics; Thermodynamics; RARE-EARTH-ELEMENTS; ACID SOLUTIONS; REMOVAL; BATCH; EXTRACTION; SEPARATION; EU(III); BLEND; OXIDE;
D O I：
10.1016/j.jiec.2015.08.024
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Silica-based urea-formaldehyde (SiO2/UF) composite material was prepared and impregnated with organophosphorus extractant, namely; 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester, for removal of Eu3+ and Nd3+ from aqueous solutions. The sorption capacity of the impregnated SiO2/UF for Eu3+ and Nd3+ were determined and found to be 3.1 and 2.8 meq/g, respectively. Pseudo-second-order kinetic model is applicable and the sorption process is controlled by intra-particle diffusion mechanism. The values of thermodynamic parameters indicated that the sorption process is spontaneous and has endothermic nature. The prepared impregnated composite is an efficient sorbent media and recommended for removal of some lanthanide elements from aqueous solution. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：264 / 272
页数：9
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