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PFAS吸附在自然水特性上的化物上的干扰

Nathaniel P Sheehan¹, Charles A Ponge², Abe Pankratz³

¹Civil, Environmental, and Architectural Engineering, University of Kansas, Lawrence, KS 66045, USA.

|April 16, 2025

概括

化物CP814E (BEA) 能够有效地从水中去除化物和多化物 (PFAS),即使在复杂的矩阵中也是如此. 这种可再生吸附剂在处理PFAS污染的水源方面表现有前途.

科学领域:

环境科学环境科学
水处理技术水处理技术
材料科学材料科学材料科学

背景情况:

和多醇基物质 (PFAS) 是广泛存在的人为污染物,具有潜在的健康和环境风险.
传统的去除方法,如活性碳和离子交换树脂有局限性.
焦石正在成为有前途的吸附剂,具有提高PFAS去除的选择性和再生能力.

研究的目的:

评估紫 CP814E (BEA) 在从水中去除 PFAS 的功效.
调查各种水矩阵特征对BEA的PFAS吸附性能的影响.
评估BEA在PFAS整治中的可再生性和实际应用性.

主要方法:

批量吸附实验使用西奥利特CP814E (BEA) 进行.
在不同pH值的合成EPA水中测试了PFAS去除,酸 (Na+,Ca2+,Mg2+),酸 (HA),酸 (FA) 和天然有机物质 (NOM).
吸附剂的性能在七个热再生周期和真实水样中进行了评估.

主要成果:

与超纯水相比,BEA在合成EPA水中证明了更好的PFAS去除.
Na+,Ca2+和Mg2+离子的存在显著提高了BEA的性能.
在6-9的pH范围内,PFAS吸附稳定,并且在1g/L负载下基本不受HA,FA和NOM的影响.
在多个再生周期中,BEA 保持了吸附能力,在真水中以 ppt 的水平吸附了 PFOA,PFOS 和 PFHxS.

结论:

化物CP814E (BEA) 是一种高效和可再生的吸附剂,用于从水中去除各种PFAS,包括PFOA,PFOS和PFHxS.
在存在常见的水矩阵成分和在典型的pH范围内,BEA的性能是稳健的.
这项研究强调了BEA作为一种可行的技术,用于在各种水源中进行实际的PFAS整治.

关键词:

吸附方式吸附方式吸附方式贝塔热酸乙烯 (Beta-zeolite) 是一种有氧化物.姓名姓名姓名这就是PFOA的PFOA.在PFOS系统中,我们可以处理水处理水处理水处理

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