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易于结构的晶体多孔框架珠用于深度净化核废水

Hai-Ruo Li¹, Xue-Zhuo Jing¹, Chao-Yue Zhao²

¹College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Academy of Interdisciplinary Studies on Intelligent Molecules, Tianjin Normal University, Tianjin 300387, China.

National science review

|April 11, 2025

概括

研究人员从晶体多孔框架 (CPF) 开发了微珠复合材料,以从废水中去除放射性核素残留物. 这些珠子有效地净化污染水,以满足严格的饮用水标准,并且可重复使用,为核废水处理提供了可扩展的解决方案.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
核工程核工程是指核工程.

背景情况:

地下水中的放射性核化物残留物对人类健康和环境构成重大风险.
晶体多孔框架 (CPF) 显示了净化水的潜力,但由于其微晶性质而面临挑战.
工业规模的CPF应用受到其物理形式和处理的限制.

研究的目的:

开发一种可扩展的方法,用于将各种CPF结构化为实际的吸附剂形式.
评估这些结构化CPF在从污染水中去除放射性核酸替代物的有效性.
展示核废水深度净化的一种通用战略.

主要方法:

通过使用聚烯酸) - 藻酸盐和聚乙烯硫,将17种CPF结构化为34种水友和疏水性微珠复合材料.
测试了微珠复合材料从自来水和模拟的汉福德低活性废物 (LAW) 中捕获酸盐 (ReO4-).
根据世界卫生组织 (WHO) 和美国环境保护局 (EPA) 的饮用水标准评估了净化效率.

主要成果:

在预处理的LAW流中达到高净化水平,使饮用水净化达到珠子重量的5000倍.
将技术 (Tc) 的含量降至0.026ppb,超过了世卫组织和环保署的标准.
通过循环,证明了微珠复合材料的方便和快速再生.

结论:

一个简单而可扩展的结构化策略成功地将CPF转化为有效的微珠吸收剂.
开发的CPF微珠为深度净化核废水提供了一个有前途的解决方案.
该战略为工业水处理应用的CPF结构提供了一种通用方法.

关键词:

99TcO4−/ReO4− 的封存方式.深度净化深度净化通过键结合的有机框架.结构化混合矩阵珠子

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