A novel preparation and vapor phase modification of 2D-open channel bioadsorbent for uranium separation

被引：13

作者：

Ahmad, Mudasir ^{[1
,2
]}

Ren, Jianquan ^{[1
]}

Xiu, Tao ^{[1
]}

Naik, Mehraj-ud-din ^{[3
]}

Zhang, Qiuyu ^{[1
,2
]}

Zhang, Baoliang ^{[1
,4
]}

机构：

[1] Northwestern Polytech Univ, Sch Chem & Chem Engn, Youyi Rd 127, Xian 710072, Peoples R China

[2] Northwestern Polytech Univ, Xian Key Lab Funct Organ Porous Mat, Xian, Peoples R China

[3] Jazan Univ, Coll Engn, Dept Chem Engn, Jazan, Saudi Arabia

[4] Sunresins New Mat Co Ltd, Shaanxi Engn & Res Ctr Funct Polymers Adsorpt & S, Xian, Peoples R China

来源：

AICHE JOURNAL | 2022年 / 68卷 / 12期

基金：

中国国家自然科学基金;

关键词：

2D-open channel; microporous bioadsorbent; uranium; vapor-phase modification; BAMBOO CHARCOAL; SEAWATER; EXTRACTION; EFFICIENT; RECOVERY; POLYMER; SITES; COST;

D O I：

10.1002/aic.17884

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

An economical and highly uranium extraction from seawater remains a crucial task for energy sources and environmental safety. Aiming for improving the mass transfer rate of uranium from seawater, a new synthetic strategy was adopted to synthesize two-dimensional-open channel microporous bioadsorbent for uranium extraction from seawater. Herein, a vapor phase modification approach was adopted to graft divinylbenzene (DVB), and polyacrylonitrile (AN) onto the surfaces of microporous frameworks via a free radical polymerization method. The postsynthetic functionalization was carried out by hydrothermal process, where amidoxime groups are structure-directing agents to trap uranium. Furthermore, amidoxime groups not only enhanced hydrophilicity but also adjusts adsorbents pK(a). AO-Fc faces minimum interference of competing ions and achieves a high uranium adsorption capacity of 8.57 +/- 0.02 and 409 +/- 1 mg/g in seawater and simulated solution. Despite its stable structure, AO-Fc exhibits a long life span and negligible weight loss revealed AO-Fc could be applied as a potential adsorbent for radionuclides.

引用

页数：13

共 58 条

[1] Design Strategies to Enhance Amidoxime Chelators for Uranium Recovery [J].