Uranium(VI) recovery from acidic leach liquor using manganese oxide coated zeolite (MOCZ) modified with amine

被引：9

作者：

Yousef, L. A. ^{[1
]}

Bakry, A. R. ^{[1
]}

Ahmad, A. A. ^{[1
]}

机构：

[1] Nucl Mat Author, Cairo, Egypt

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2020年 / 324卷 / 01期

关键词：

MOCZ; TOA; Uranium(VI); Kinetic; Equilibrium; Adsorption; Elution; ION-EXCHANGE; ADSORPTION-ISOTHERMS; AQUEOUS-SOLUTIONS; VI ADSORPTION; REMOVAL; EQUILIBRIUM; SORPTION; THORIUM; ALUMINOSILICATES; THERMODYNAMICS;

D O I：

10.1007/s10967-020-07042-7

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Manganese oxide coated zeolite modified with trioctyl amine (MOCZ/TOA) was tested for adsorption of uranium. Different experiments were performed to evaluate the optimum adsorption conditions; pH, dose, uranium concentration, temperature variation and contact time. Maximum adsorption capacity reached 99 mg/g according to Langmuir model. The study of thermodynamic parameters showed that sorption process is non spontaneous, exothermic and random. Studies on process kinetics showed that the process obeys pseudo-second order model. Uranium desorption was accomplished using 0.3 M H2SO4. Optimum conditions were carried out for uranium recovery from sedimentary geologic sample from Gattar area, North Eastern Desert, Egypt. The final uranium precipitate was characterized by ICP-OES technique.

引用

页码：409 / 421

页数：13

共 46 条

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