预辐射接枝改性无纺布制备铯离子吸附材料

徐晓; 刘西艳; 赵晓燕; 马红娟

doi:10.11889/j.1000-3436.2017.rrj.35.050302

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预辐射接枝改性无纺布制备铯离子吸附材料

辐射化学 | 更新时间：2021-12-10

- 预辐射接枝改性无纺布制备铯离子吸附材料
- Adsorption of cesium on non-woven fabric prepared from pre-irradiation-induced graft polymerization
- 辐射研究与辐射工艺学报 2017年35卷第5期
- 作者机构：
  
  1.常州大学石油化工学院常州 213164
  2.中国科学院上海应用物理研究所嘉定园区上海 201800
- 作者简介：
  
  [ "徐晓, 男, 1992年11月出生, 2016年于齐鲁理工学院获学士学位, 现为常州大学与中国科学院上海应用物理研究所联合培养硕士研究生, 从事化学工程与工艺研究, E-mail:xuxiao@sinap.ac.cn", "XU Xiao (male) was born in November 1992, and received his bachelor's degree from Qilu Institute of Technology in 2016. Now he is a joint master promotion programme in Changzhou University and Shanghai Institute of Applied Physics, Chinese Academy of Sciences, focusing on chemical engineering and technology, E-mail:xuxiao@sinap.ac.cn" ]
  赵晓燕, 博士, 副教授, E-mail:zhaoxiaoyan@cczu.edu.cnPh.D. ZHAO Xiaoyan, associate professor, E-mail:zhaoxiaoyan@cczu.edu.cn
  马红娟, 博士, 副研究员, E-mail:mahongjuan@sinap.ac.cnPh.D. MA Hongjuan, associate professor, E-mail:mahongjuan@sinap.ac.cn
- 基金信息：
  
  国家自然科学基金项目(11305241);中国科学院战略性先导科技专项(XDA02030200);日本原子力研究机构博士后项目
- DOI：10.11889/j.1000-3436.2017.rrj.35.050302
  中图分类号：
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徐晓, 刘西艳, 赵晓燕, 等. 预辐射接枝改性无纺布制备铯离子吸附材料[J]. 辐射研究与辐射工艺学报, 2017,35(5):050302-10.

Xiao XU, Xiyan LIU, Xiaoyan ZHAO, et al. Adsorption of cesium on non-woven fabric prepared from pre-irradiation-induced graft polymerization[J]. Journal of Radiation Research and Radiation Processing, 2017,35(5):050302-10.
徐晓, 刘西艳, 赵晓燕, 等. 预辐射接枝改性无纺布制备铯离子吸附材料[J]. 辐射研究与辐射工艺学报, 2017,35(5):050302-10. DOI： 10.11889/j.1000-3436.2017.rrj.35.050302.

Xiao XU, Xiyan LIU, Xiaoyan ZHAO, et al. Adsorption of cesium on non-woven fabric prepared from pre-irradiation-induced graft polymerization[J]. Journal of Radiation Research and Radiation Processing, 2017,35(5):050302-10. DOI： 10.11889/j.1000-3436.2017.rrj.35.050302.

摘要

采用预辐射接枝聚合方法制备了4-羟基丁基丙烯酸酯缩水甘油醚（4HBAG）接枝的聚乙烯/聚丙烯（PE/PP）皮芯结构无纺布。用Na,2,SO,3,对接枝4HBAG的无纺布（PE/PP-g-4HBAG）进行开环反应，改性得到磺酸型吸附材料。在环氧基物质的量转化率52%时获得了磺酸基密度1.4 mmol/g的吸附材料。采用批次吸附和流动吸附对Cs,+,的吸附性能进行研究。Cs,+,的吸附等温线和吸附动力学表明，吸附过程遵循Langmuir等温线模型和准二级动力学模型。在1 000 SV/h高流速下，Cs,+,的最大吸附容量为1.35 mmol/g。在pH=4~10时，吸附率稳定在90%左右，该值随pH值的增加而降低。在Cs,+,初始浓度为1 mg/L和10 mg/L的溶液中研究了Na,+,对Cs,+,吸附率的影响，当Na,+,浓度从0增加到20 mmol/L时，Cs,+,的吸附率迅速降低。二价和三价金属离子Mg,2+,、Ca,2+,和Fe,3+,对Cs,+,吸附更具有阻碍作用。该磺酸型吸附材料在1 000 SV/h的高流速下能快速去除Cs,+,。

Abstract

Sulfonic-type adsorbent was prepared from radiation-induced graft polymerization of 4-hydroxybutyl acrylate glycidylether (4HBAG) on PE/PP non-woven fabric. Sulfonation of the 4HBAG grafted PE/PP non-woven fabric was carried out in a mixed solution of Na,2,SO,3,. The process of sulfonation was investigated by the morphology and weight of the material. A sulfonic group density of 1.4 mmol/g adsorbent with a 52% molar conversion of the epoxy group was obtained. The adsorption behavior of cesium was studied with batch and column model. The sorption isotherm and sorption kinetics of cesium indicated that the adsorption process followed the Langmuir isotherm model and pseudo second-order kinetic model. The maximum adsorption capacity of cesium was evaluated as 1.35 mmol/g at a high flow rate of 1 000 SV/h. In the range of pH=4~10, the adsorption ratio remained stable at approximately 90%, and the value decreased with further increments of pH value. The effect of Na,+, on the removal ratio of Cs,+, was studied in its 1 mg/L and 10 mg/L solution. The removal ratio of Cs,+, decreased quickly when the Na,+, concentration increased from 0 to 20 mmol/L. Compared with the effects of Na,+, and K+, bivalent ions such as Mg,2+, and Ca,2+, and the trivalent metal ion Fe,3+, were found to be more impeditive to Cs,+, adsorption. This sulfonic-type adsorbent exhibited the extremely rapid removal of Cs,+, with a high flow rate of 1 000 SV/h.

关键词

预辐射接枝聚合磺酸型铯离子吸附4-羟基丁基丙烯酸酯缩水甘油醚聚乙烯/聚丙烯

Keywords

Pre-irradiationGraft polymerizationSulfonic-typeCesiumAdsorption4-hydroxybutyl acrylate glycidyletherPE/PP

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