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Chapter One - Advances in metal(loid) in situ soil remediation and potential influences of changing environmental conditions.

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Title: Chapter One - Advances in metal(loid) in situ soil remediation and potential influences of changing environmental conditions.
Authors: Sowers, Tyler D.1 (AUTHOR) sowers.tyler@epa.gov, Fischel, Matthew H.H.2 (AUTHOR), Peel, Hannah R.1 (AUTHOR), Fischel, Jason S.T.3 (AUTHOR), Betts, Aaron R.4 (AUTHOR), Bone, Sharon E.5 (AUTHOR)
Source: Advances in Agronomy. 2025, Vol. 194, p1-53. 53p.
Subject Terms: *SOIL remediation, *BIOGEOCHEMISTRY, *CHEMICAL elements, *MERCURY (Element), *LEAD, *ECOSYSTEM dynamics, *ARSENIC, *POLLUTANTS
Abstract: Soils ubiquitously contain metal(loid)s that may have severe implications on human and ecosystem health. Increased understanding of the toxicity and mobility of metal (loid) contaminants has intensified the need for remediation options that reduce exposure. Metal(loid) biogeochemistry and soil heterogeneity determine the design and implementation of remediation methods; however, fluctuating environmental conditions due to sea level rise, flooding, and/or wildfires create further complications. Here, we discuss a subset of in situ remediation methods that represent promising options for treating high priority metal(loid) contaminants. Specifically, lead, mercury, arsenic, chromium, and uranium remediation are discussed to evaluate unique chemistries associated with cation, oxyanion, and radionuclide contaminants. Mobility of these elements when subjected to environmental changes from sea level rise, flooding, and wildfires are also explored. Ultimately, there is great uncertainty regarding how remediated contaminants will respond when exposed to changing soil conditions promoted by shifts in the surrounding environment. Further exploration is essential to understanding metal(loid) contaminant biogeochemical cycling and estimating reduction in exposure post-remediative action. [ABSTRACT FROM AUTHOR]
Database: Academic Search Index
Description
Abstract:Soils ubiquitously contain metal(loid)s that may have severe implications on human and ecosystem health. Increased understanding of the toxicity and mobility of metal (loid) contaminants has intensified the need for remediation options that reduce exposure. Metal(loid) biogeochemistry and soil heterogeneity determine the design and implementation of remediation methods; however, fluctuating environmental conditions due to sea level rise, flooding, and/or wildfires create further complications. Here, we discuss a subset of in situ remediation methods that represent promising options for treating high priority metal(loid) contaminants. Specifically, lead, mercury, arsenic, chromium, and uranium remediation are discussed to evaluate unique chemistries associated with cation, oxyanion, and radionuclide contaminants. Mobility of these elements when subjected to environmental changes from sea level rise, flooding, and wildfires are also explored. Ultimately, there is great uncertainty regarding how remediated contaminants will respond when exposed to changing soil conditions promoted by shifts in the surrounding environment. Further exploration is essential to understanding metal(loid) contaminant biogeochemical cycling and estimating reduction in exposure post-remediative action. [ABSTRACT FROM AUTHOR]
ISSN:00652113
DOI:10.1016/bs.agron.2025.07.002