U(VI) and Th(IV) recovery using silica beads functionalized with urea- or thiourea-based polymers – Application to ore leachate - 成果

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U(VI) and Th(IV) recovery using silica beads functionalized with urea- or thiourea-based polymers – Application to ore leachate

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作者信息关键词期刊信息基础信息归属信息摘要

成果类型：

期刊论文

作者：

Hamza, Mohammed F.;Wei, Yuezhou;Khalafalla, Mahmoud S.;Abed, Neveen S.;Fouda, Amr;...

通讯作者：

Wei, YZ;Guibal, E

作者机构：

[Wei, Yuezhou; Hamza, Mohammed F.] Univ South China, Sch Nucl Sci & Technol, Heng Yang 421001, Egypt.

[Khalafalla, Mahmoud S.; Abed, Neveen S.; Hamza, Mohammed F.] Nucl Mat Author, POB 530, Cairo, Egypt.

[Wei, Yuezhou] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, Shanghai, Peoples R China.

[Fouda, Amr] Al Azhar Univ, Fac Sci, Bot & Microbiol Dept, Cairo 11884, Egypt.

[Elwakeel, Khalid Z.] Univ Jeddah, Dept Chem, Coll Sci, Jeddah, Saudi Arabia.

通讯机构：

[Wei, YZ ] U

[Guibal, E ] I

Univ South China, Sch Nucl Sci & Technol, Heng Yang 421001, Egypt.

Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, Shanghai, Peoples R China.

IMT Mines Ales, Polymers Composites & Hybrids PCH, Ales, France.

语种：

英文

关键词：

Application to acidic leachates;Selectivity issues;Sorption kinetics and isotherms;Uranium and thorium sorption and desorption;Urea and thiourea functionalization of silica beads

期刊：

Science of The Total Environment

ISSN：

0048-9697

年：

2022

卷：

821

页码：

153184

DOI：

10.1016/j.scitotenv.2022.153184

基金类别：

NSFC, ChinaNational Natural Science Foundation of China (NSFC) [U1967218, U11975082]; Institut Francais d'Egypte; Nuclear Materials Authority-Egypt - Egyptian Academy of Science and Technology (Egypt); Ministere des Affaires Etrangeres and Ministere de l'Enseignement Superieur et de la Recherche (France)

机构署名：

本校为第一且通讯机构

院系归属：

核科学技术学院

摘要：

Urea and thiourea have been successfully deposited at the surface of silica beads (through one-pot reaction with formaldehyde) for designing new sorbents for U(VI) and Th(IV) recovery (UR/SiO(2) and TUR/SiO(2) composites, respectively). These materials have been characterized by FTIR, titration, elemental analysis, BET, TGA, SEM-EDX for identification of structural and chemical properties, and interpretation of binding mechanisms. Based on deprotonation of reactive groups (amine, carbonyl, or thiocarbonyl) and metal speciation, the optimum pH was ~4. Uptake kinetics was fast (equilibrium withi...

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U(VI) and Th(IV) recovery using silica beads functionalized with urea- or thiourea-based polymers – Application to ore leachate

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