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通过以为基础的多孔聚合物有效地去除甲酸/甲酸

Miaomiao He¹, Yuxuan Chen¹, Guangyuan Chen¹

¹National Co-Innovation Center for Nuclear Waste Disposal and Environmental Safety, Southwest University of Science and Technology, Mianyang, 621010, China; State Key Laboratory of Environment-Friendly Energy Materials, School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang, 621010, China.

Environmental pollution (Barking, Essex : 1987)

|June 29, 2024

概括

一个基于的新型阴离子聚合物网络,CPP-Cl,证明了从放射性废物中有效地去除99-甲 (TcO) 甲 (⁹⁹TcO₄-). 这种吸附剂具有超快的动力学和环境修复应用的高容量.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
核化学核化学核化学

背景情况:

从放射性废水中去除99--99甲酸 (TcO4-TcO9) 对于核废物处理和环境保护至关重要.
开发高效,具有成本效益的吸附剂对于控制放射性污染至关重要.

研究的目的:

合成和评估一种以为基础的性聚合物网络 (CPP-Cl),用于吸附烯酸盐 (ReO-),一种替代99-TcO的替代物.
研究CPP-Cl的吸附性能,动力学和可重复使用性,以便在核废物处理中潜在应用.

主要方法:

简单且低成本的合成基于的阴离子聚合物网络 (CPP-Cl).
批量吸附实验以确定使用ReO₄^-的吸附能力,动力学和效率.
评估CPP-Cl在不同pH条件下的性能及其通过多个吸附/脱附周期的可重复使用性.

主要成果:

CPP-Cl表现出超快的吸附动力学,在30秒内达到平衡.
该材料显示了ReO₄^-的高吸附能力为1069.7mg/g.
在去除1000 ppm ReO₄^-时,实现了94.3%的特殊分离效率,在模拟核废物中,效率高达94.2%.

结论:

在广泛的pH范围内,CPP-Cl表现出极好的可重复使用性和稳定的性能.
合成的以为基础的酸性聚合物网络具有很大的潜力,可以作为一种高效的吸收剂,用于在核相关的环境系统中捕获TcO-ReO.

关键词:

(99) TcO(4)(−) / ReO(4)(−) 的使用情况.吸附方式吸附方式吸附方式化聚合物网络中的化聚合物.放射性离子交换是一种放射性离子交换.

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