Potential application of graphene oxide membranes for removal of Cs(I) and Sr(II) from high level-liquid waste

被引：68

作者：

Ma, Fuyin ^{[1
,2
]}

Li, Zheng ^{[1
]}

Zhao, Haogui ^{[1
]}

Geng, Yiyun ^{[1
,2
]}

Zhou, Wei ^{[1
]}

Li, Qingnuan ^{[1
]}

Zhang, Lan ^{[1
]}

机构：

[1] Chinese Acad Sci, Key Lab Nucl Radiat & Nucl Energy Technol, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2017年 / 188卷

基金：

中国国家自然科学基金;

关键词：

Graphene oxide membrane; High level-liquid waste; Permeation; Cs(I); Sr(II); GRAPHITE OXIDE; AQUEOUS-SOLUTIONS; PERMEATION; SEPARATION; WATER; EXTRACTION; TRANSPORT; STRONTIUM; BEHAVIOR; PRECISE;

D O I：

10.1016/j.seppur.2017.07.062

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

As a new carbon-based membrane material used for ionic and molecular sieving, the graphene oxide (GO) membrane also has potential application in radiochemical separation. In this work, the permeation performances of some typical metallic elements in high level-liquid waste (HLLW) through the ionic sieving 5-mu m-thick GO membranes were investigated. It was found that the permeation rates of ions through GO membranes markedly decreased with the increase of hydrated ionic radii. Cs(I) and Sr(II) permeated through GO membranes quickly, whereas lanthanide ions and actinide ions infiltrated much more slowly, thus providing the feasibility of separation according to the difference of hydrated ionic radii. Moreover, the concentrations of initial metal ions and acidity in feed solutions also had influences on the permeation of ions through GO membranes, and higher initial metal ions and feed solution acidity were favorable to the removal of Cs(I) and Sr(II). The barrier separation test indicated that GO membranes had promising ability for the separation of Cs(I) and Sr(II) from lanthanide and actinide ions due to the difference of hydrated ion radius, and the separation factor of Cs(I)/U(VI) and Sr(II)/U(VI) would reach about 10 and 3 in single penetration. The presented results demonstrated that the membrane separation based on GO membrane would be a promising candidate for the removal of Cs(I) and Sr(II) from HLLW.

引用

页码：523 / 529

页数：7

共 39 条

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