Surfactant-enhanced mobilization of persistent organic pollutants: Potential for soil and sediment remediation and unintended consequences

Shiv Bolan, Lokesh P Padhye, Catherine N Mulligan, Emilio Ritore Alonso, Roger Saint-Fort, Tahereh Jasemizad, Chensi Wang, Tao Zhang, Jörg Rinklebe, Hailong Wang, Kadambot H M Siddique, M B Kirkham, Nanthi Bolan

Research output: Contribution to journalReview articlepeer-review

47 Citations (Scopus)

Abstract

This review aims to provide an overview of the sources and reactions of persistent organic pollutants (POPs) and surfactants in soil and sediments, the surfactant-enhanced solubilisation of POPs, and the unintended consequences of surfactant-induced remediation of soil and sediments contaminated with POPs. POPs include chemical compounds that are recalcitrant to natural degradation through photolytic, chemical, and biological processes in the environment. POPs are potentially toxic compounds mainly used in pesticides, solvents, pharmaceuticals, or industrial applications and pose a significant and persistent risk to the ecosystem and human health. Surfactants can serve as detergents, wetting and foaming compounds, emulsifiers, or dispersants, and have been used extensively to promote the solubilization of POPs and their subsequent removal from environmental matrices, including solid wastes, soil, and sediments. However, improper use of surfactants for remediation of POPs may lead to unintended consequences that include toxicity of surfactants to soil microorganisms and plants, and leaching of POPs, thereby resulting in groundwater contamination.

Original languageEnglish
Article number130189
Pages (from-to)130189
JournalJournal of Hazardous Materials
Volume443
Issue numberPart A
Early online date13 Oct 2022
DOIs
Publication statusPublished - 5 Feb 2023

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