Summary
This review examines the paradox of soil remediation: whilst mobilisation of contaminants is often necessary to facilitate their removal from soil, the process carries risks of unintended environmental consequences, including contaminant redistribution to groundwater or increased plant uptake. The authors synthesise current understanding of mobilisation mechanisms, bioavailability changes, and trade-offs between remediation success and secondary pollution, as suggested by the 2022 literature. The paper appears to argue for more integrated assessment frameworks that account for both remedial goals and off-site or ecological impacts.
UK applicability
The findings are relevant to UK soil remediation practice, particularly for contaminated land in urban, industrial and legacy mining areas where mobilisation-based approaches (chemical extraction, phytoremediation, soil washing) are employed. UK environmental regulators and site managers would benefit from the integrated risk-assessment perspective when designing remediation strategies under the Environmental Protection Act and contaminated land regimes.
Key measures
Contaminant mobilisation pathways; bioavailability; leaching potential; plant uptake; water contamination risk; remediation effectiveness metrics
Outcomes reported
The study examines mechanisms and consequences of contaminant mobilisation during soil remediation, considering both intended remediation outcomes and potential unintended environmental impacts. The work synthesises evidence on how mobilisation strategies affect contaminant fate, transport and bioavailability in soil–plant–water systems.
Topic tags
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