| 冻融法合成Sr高效吸附剂硅钛酸钠 |
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| 引用本文： | 郑宇,李玉松,张振涛,王雷,华小辉,游新锋,郑文俊,杨林月. 冻融法合成Sr高效吸附剂硅钛酸钠[J]. 核化学与放射化学, 2017, 39(6): 454-458. DOI: 10.7538/hhx.2017.39.06.0454 |
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| 作者姓名： | 郑宇 李玉松 张振涛 王雷 华小辉 游新锋 郑文俊 杨林月 |
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| 作者单位： | 中国原子能科学研究院 放射化学研究所，北京102413 |
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| 摘 要： | "冻融法"合成了高效除Sr吸附剂。经扫描电镜(SEM)、差示扫描量热仪(DSC)和热重分析(TG)等分析方法对吸附剂进行了形貌及成分表征。考察了吸附剂硅钛酸钠对非放射性模拟废液中Sr的去除能力,验证了硅钛酸钠对放射性废液中90Sr的深度净化能力。实验结果显示,合成的硅钛酸钠对废液中Sr的吸附效果十分出色,在室温、pH=13的条件下,硅钛酸钠对非放模拟废液中Sr的吸附Kd值超过105 mL/g;同时所制备的吸附剂具有极强的耐盐性。"冻融法"制备吸附剂过程简单、产量大,适于工业化生产。
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| 关 键 词： | 吸附 锶 冻融法 吸附剂 放射性废液 |
Synthesis of High Efficient Absorbent for Sr by Freezing and Thawing Method |
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| ZHENG Yu,LI Yu-song,ZHANG Zhen-tao,WANG Lei,HUA Xiao-hui,YOU Xin-feng,ZHENG Wen-jun,YANG Lin-yue. Synthesis of High Efficient Absorbent for Sr by Freezing and Thawing Method[J]. Journal of Nuclear and Radiochemistry, 2017, 39(6): 454-458. DOI: 10.7538/hhx.2017.39.06.0454 |
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| Authors: | ZHENG Yu LI Yu-song ZHANG Zhen-tao WANG Lei HUA Xiao-hui YOU Xin-feng ZHENG Wen-jun YANG Lin-yue |
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| Affiliation: | China Institute of Atomic Energy, P. O. Box 275(93), Beijing 102413, China |
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| Abstract: | In this paper, high efficient absorbent for Sr named crystalline silicontitanate was prepared through the “freezing and thawing” method. The morphology and composition of absorbent were characterized by SEM, DSC, TG and other analytical methods. The removal ability of Sr in non radioactive waste liquid was investigated, and the deep purification ability of 90Sr in the high salt radioactive waste liquid was verified. When the pH of solution is 13, the crystalline silicontitanate has a very strong adsorption effect to Sr. The Kd value is larger than 105 mL/g. And it is indicated that the absorbent has strong salt resistance. The “freezing and thawing” method is simple and has large output. It is suitable for industrial production. |
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