冻融法合成Sr高效吸附剂硅钛酸钠

Yu ZHENG,Yu-song LI,Zhen-tao ZHANG,Lei WANG,Xiao-hui HUA,Xin-feng YOU,Wen-jun ZHENG,Lin-yue YANG

Journal of Nuclear and Radiochemistry（2017）

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Abstract

“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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Key words

adsorb,strontium,freezing and thawing,absorbent,radioactive waste liquid

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