Electrokinetic (EK) removal of soil co-contaminated with petroleum oils and heavy metals in three-dimensional (3D) small-scale reactor

Lee, Jae-Young; Kwon, Tae-Young; Park, Jiyeon; Choi, Seo Young; Kim, Eui Jin; Lee, Hyun Uk; Lee, Young-Chul

doi:10.1016/j.psep.2015.10.015

Cited by 22 publications

(6 citation statements)

References 24 publications

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“…The transport of the predominantly neutral PFASs can be possibly explained by the electro-osmotic flow. Similarly, previous studies have reported trends towards the cathode for neutral organic contaminants, e.g., petroleum hydrocarbons (Lee et al, 2016), trichloroethylene (Chung and Lee, 2007), 2,4,6-trichlorophenol (Ruiz et al, 2014 and perchloroethylene (Gholami et al, 2014), and have attributed these to extraction from soil due to electro-osmotic flow. Hence, electro-remediation of soil can be applied for both charged and neutral PFASs, which can be retrieved at opposing electrodes.…”

Section: Performance Parameters Of the Electrodialytic Experimentsmentioning

confidence: 53%

Electrodialytic per- and polyfluoroalkyl substances (PFASs) removal mechanism for contaminated soil

et al. 2019

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Contamination of soils with per-and polyfluoroalkyl substances (PFASs) is a global problem, in particular at fire-fighter training sites due to the usage of PFAS-containing aqueous fire-fighting foams (AFFFs). In this study, an electrodialytic remediation method was applied for the first time to remove PFASs from contaminated soil. The electrodialytic remediation system was evaluated in a laboratoryscale experiment with current densities of 0.19 mA cm -2 and 0.38 mA cm -2 over 21 days, using PFAScontaminated soil from a fire-fighter training site at Stockholm Arlanda Airport, Sweden. Of the 23 PFASs targeted, significant (p<0.05) PFAS electromigration towards the anode was observed for C3-C7 perfluoroalkyl carboxylates (PFCAs) (PFBA, PFPeA, PFHxA, PFOA) and C4, C6, and C8 perfluoroalkane sulfonates (PFSAs) (PFBS, PFHxS, PFOS) since these PFASs were predominantly negatively charged. In contrast to the electromigration of the charged PFASs, N-methyl perfluorooctane sulfonamide (MeFOSA), perfluorooctane sulfonamidoacetic acid (FOSAA) and ethyl FOSAA (EtFOSAA) showed significant (p<0.05) transport towards the cathode, which is probably attributed due to electro-osmotic flow of these predominantly neutral PFASs. Mass balance calculations showed that for the shortestchained PFASs (i.e., PFBA, PFPeA, PFHxA, PFBS, and PFHxS), up to 20% was extracted from the soil to the anolyte, which showed that electrodialytic is a possible in-situ remediation technique for PFAScontaminated soil.

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Section: Performance Parameters Of the Electrodialytic Experimentsmentioning

confidence: 53%

Electrodialytic per- and polyfluoroalkyl substances (PFASs) removal mechanism for contaminated soil

et al. 2019

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“…Indeed, the use of KH 2 PO 4 as an anolyte permitted to enhance the removal efficiencies of As species by >50% and ∼ 20% for Cu species. Meanwhile, it did not enhanced the removal of the Pb and Zn (< 20%) [89,90]. Also reported that adding ethylene diamine disuccinate (EDDS) in the anolyte enhanced Pb and Cd removal efficiencies in the contaminated soil.…”

Section: Electrodes and Electrolytesmentioning

confidence: 99%

Metal-Contaminated Soil Remediation: Phytoremediation, Chemical Leaching and Electrochemical Remediation

Ifon¹,

Togbé²,

Tometin³

et al. 2019

Metals in Soil - Contamination and Remediation

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Soil contamination has led to serious land tenure problems, reduction in land usability for agricultural production; as a consequence, food insecurity is nowadays a global challenge. Indeed, with rapid population growth across the world, the food demand for consumption has drastically increased and traditional ways of producing food cannot meet with the actual demand. Industrialization has been acknowledged as a way out to sustain humanity with food. Unfortunately, the later has further turn into a threat to the environment. In effect, several potentially toxic elements (PTE) are being released in the environment and soil systems; and arable or agricultural lands are getting restraint, limited and scarce. Nowadays, there is a consensus on remediating contaminated lands with PTE, mainly inorganic contaminants, metals. The state at which a metal is found in the soil greatly influences its bioavailability, interaction with plants and the level at which it will threaten (toxicity) the environment and thus human. It even defines the remediation approaches to be applied for the soil restoration. This chapter will provide an insight on the occurrence of PTE in the soil, bioavailability and remediation approaches namely phytoremediation, chemical leaching and electrochemical remediation; and finally highlight the future research direction on this topic.

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“…However, the removal efficiency varies with the type of chemical used (anolyte) and metal remediated (Vocciante et al, 2016). For example, Lee et al (2016) used KH 2 PO 4 as an anolyte and showed that removal efficiencies increased by N50% for As species and ∼20% for Cu species. However, removal of the Pb and Zn was relatively inefficient (b 20%).…”

Section: Electrokinetic Remediationmentioning

confidence: 99%

A comparison of technologies for remediation of heavy metal contaminated soils

Khalid

Shahid

Niazi

et al. 2017

Journal of Geochemical Exploration

1,065

349

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, et al.. A comparison of technologies for remediation of heavy metal contaminated soils. Journal of Geochemical Exploration, Elsevier, 2016Elsevier, , 182, pp.247 -268. 10.1016Elsevier, /j.gexplo.2016 Any correspondence concerning this service should be sent to the repository administrator: staff-oatao@listes-diff.inp-toulouse.fr a b s t r a c tSoil contamination with persistent and potentially (eco)toxic heavy metal(loid)s is ubiquitous around the globe. Concentration of these heavy metal(loid)s in soil has increased drastically over the last three decades, thus posing risk to the environment and human health. Some technologies have long been in use to remediate the hazardous heavy metal(loid)s. Conventional remediation methods for heavy metal(loid)s are generally based on physical, chemical and biological approaches, which may be used in combination with one another to clean-up heavy metal(loid) contaminated soils to an acceptable and safe level. This review summarizes the soil contamination by heavy metal(loid)s at a global scale, accumulation of heavy metal(loid)s in vegetables to toxic levels and their regulatory guidelines in soil. In this review, we also elucidate and compare the pool of available technologies that are currently being applied for remediation of heavy metal(loid) contaminated soils, as well as the economic aspect of soil remediation for different techniques. This review article includes an assessment of the contemporary status of technology deployment and recommendations for future remediation research. Finally, the molecular and genetic basis of heavy metal(loid) (hyper)accumulation and tolerance in microbes and plants is also discussed. It is proposed that for effective and economic remediation of soil, a better understanding of remediation procedures and the various options available at the different stages of remediation is highly necessary.

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Electrokinetic (EK) removal of soil co-contaminated with petroleum oils and heavy metals in three-dimensional (3D) small-scale reactor

Cited by 22 publications

References 24 publications

Electrodialytic per- and polyfluoroalkyl substances (PFASs) removal mechanism for contaminated soil

Electrodialytic per- and polyfluoroalkyl substances (PFASs) removal mechanism for contaminated soil

Metal-Contaminated Soil Remediation: Phytoremediation, Chemical Leaching and Electrochemical Remediation

A comparison of technologies for remediation of heavy metal contaminated soils

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