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氨基多聚 (?? 碳酸) - 功能化PolyHIPE珠子用于从水中消除微量重金属离子

Cuicui Guo¹, Yiling Wang¹, Yijing You¹

¹School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.

Langmuir : the ACS journal of surfaces and colloids

|March 11, 2024

概括

新的二乙烯二胺五酸 (DTPA) 功能化珠子有效地从水中去除铜和等微量重金属. 这些耐用,可回收的珠子为净化水提供了一个有希望的解决方案,以满足饮用水标准.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
水处理技术水处理技术

背景情况:

先进的材料对于从水中去除重金属至关重要.
消除微量重金属以达到饮用水标准仍然是一个重大挑战.

研究的目的:

为了合成新的环氧组功能化的开放细胞珠.
为了使这些珠子具有乙二胺五酸 (DTPA) 的功能,以增强重金属吸附.
评估DTPA@polyHIPE珠子的效率和可重复使用性,以消除重金属的痕迹.

主要方法:

通过UV聚合,合成环氧组功能化的开放细胞珠.
使用六甲基二胺作为桥梁剂,用DTPA对环氧基组的功能化.
吸附实验以评估从水中去除Cu (II),Cr (III),Pb (II),Fe (III) 和Cd (II) 的情况.

主要成果:

DTPA@polyHIPE珠子实现了 >99.55%的微量重金属吸附效率.
Cu (II),Cr (III),Pb (II),Fe (III) 和Cd (II) 的残留度降低到<0.1 mg/L.
吸附剂表现出优异的耐用性和可回收性,在5个循环后保持≥91%的容量.
吸附遵循弗洛伊德利希模型,表明多层异质吸附.

结论:

DTPA@polyHIPE珠子在从水中去除微量重金属离子方面非常有效.
吸附过程是自发的和可行的,具有出色的材料稳定性和可重复使用性.
这些珠子显示出实际应用的巨大潜力,用于处理污染水以达到饮用水标准.

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