Consideration of Vadose Zone Moisture Dynamics in Remediation of PFAS-Impacted Soils

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-04-13 DOI:10.1111/gwmr.12646

Kayvan Karimi Askarani, John S. Cook, John A. Connor, Charles J. Newell

引用次数: 0

Abstract

Oilfield brines are soluble, non-volatile, and recalcitrant contaminants that are vulnerable to capillary effects and evapoconcentration and have been known to recontaminate clean fill soils emplaced after excavations. This problem may also occur for some poly- and perfluoroalkyl substances (PFAS) at PFAS sites. In this paper, we consider the soil moisture characteristic curve, wetting front dynamics, and the moisture redistribution cycle to understand the potential behavior of different PFAS in the vadose zone. Drawing on experience with remediation of soils impacted by brine spills, we provide recommendations on the design and implementation of soil excavation and cover remedies such as capillary barriers to prevent recontamination.

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在修复受全氟辛烷磺酸（PFAS）影响的土壤时考虑地下蓄水层的湿度动态

油田盐水是易溶、非挥发性和难降解的污染物，很容易受到毛细管效应和蒸发富集的影响，已知会对挖掘后填埋的清洁土壤造成再污染。在全氟烷基磺酸盐（PFAS）场地，一些多氟和全氟烷基物质（PFAS）也可能出现这种问题。在本文中，我们考虑了土壤湿度特性曲线、湿润前沿动力学和湿度再分布周期，以了解不同 PFAS 在渗流区的潜在行为。根据对受盐水泄漏影响的土壤进行修复的经验，我们就土壤挖掘和覆盖补救措施（如毛细管屏障）的设计和实施提出了建议，以防止再次污染。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.