Critical Review of Electro-kinetic Remediation of Contaminated Soils and Sediments : Mechanisms, Performances and Technologies
(2021) In Water, Air, and Soil Pollution 232(8).- Abstract
Remediation of contaminated soil and sediment is important for improving the eco-environmental quality. Electro-kinetic remediation (EKR) is an environmentally friendly technology to migrate and remove pollutants from the soil and sediment matrix. This paper analyses the mechanism and performance of EKR of heavy metals, organic pollutants, and compound pollutants. Moreover, the effect of optimizing individual EKR through soil and sediment pre-treatment (adding acid/oxidant/co-solvent/surfactant, stirring, heating, etc.), electrode optimization (exchange electrode, anode approximation, electrode matrix, etc.), and applying multi-technology combination (electro-kinetic permeable reaction barrier/Fenton/ion, exchange... (More)
Remediation of contaminated soil and sediment is important for improving the eco-environmental quality. Electro-kinetic remediation (EKR) is an environmentally friendly technology to migrate and remove pollutants from the soil and sediment matrix. This paper analyses the mechanism and performance of EKR of heavy metals, organic pollutants, and compound pollutants. Moreover, the effect of optimizing individual EKR through soil and sediment pre-treatment (adding acid/oxidant/co-solvent/surfactant, stirring, heating, etc.), electrode optimization (exchange electrode, anode approximation, electrode matrix, etc.), and applying multi-technology combination (electro-kinetic permeable reaction barrier/Fenton/ion, exchange membrane/ultrasonic/electrolyte enhancement, etc.) was evaluated. Factors including incomplete separation of pollutants, variation in physico-chemical properties and microstructure of soil/sediment, and difficulties in in situ practice have restrained the field application of EKR. To solve the above technical challenge, an integrated EKR technology based on pollutant in situ separation, followed by separated contaminant treatment, and subsequent valuable elements recovery is proposed.
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- author
- Han, Ding ; Wu, Xingyi ; Li, Rui ; Tang, Xianqiang ; Xiao, Shangbin and Scholz, Miklas LU
- organization
- publishing date
- 2021-08
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Electro-kinetic remediation, Electrode, Enhanced method, In situ separation, Pore water, Soil pollution
- in
- Water, Air, and Soil Pollution
- volume
- 232
- issue
- 8
- article number
- 335
- publisher
- Springer
- external identifiers
-
- scopus:85112357554
- ISSN
- 0049-6979
- DOI
- 10.1007/s11270-021-05182-4
- language
- English
- LU publication?
- yes
- id
- c8f0f292-a06e-4ff6-b662-941c50d69cd5
- date added to LUP
- 2021-09-23 11:38:30
- date last changed
- 2022-04-27 04:10:15
@article{c8f0f292-a06e-4ff6-b662-941c50d69cd5,
abstract = {{<p>Remediation of contaminated soil and sediment is important for improving the eco-environmental quality. Electro-kinetic remediation (EKR) is an environmentally friendly technology to migrate and remove pollutants from the soil and sediment matrix. This paper analyses the mechanism and performance of EKR of heavy metals, organic pollutants, and compound pollutants. Moreover, the effect of optimizing individual EKR through soil and sediment pre-treatment (adding acid/oxidant/co-solvent/surfactant, stirring, heating, etc.), electrode optimization (exchange electrode, anode approximation, electrode matrix, etc.), and applying multi-technology combination (electro-kinetic permeable reaction barrier/Fenton/ion, exchange membrane/ultrasonic/electrolyte enhancement, etc.) was evaluated. Factors including incomplete separation of pollutants, variation in physico-chemical properties and microstructure of soil/sediment, and difficulties in in situ practice have restrained the field application of EKR. To solve the above technical challenge, an integrated EKR technology based on pollutant in situ separation, followed by separated contaminant treatment, and subsequent valuable elements recovery is proposed.</p>}},
author = {{Han, Ding and Wu, Xingyi and Li, Rui and Tang, Xianqiang and Xiao, Shangbin and Scholz, Miklas}},
issn = {{0049-6979}},
keywords = {{Electro-kinetic remediation; Electrode; Enhanced method; In situ separation; Pore water; Soil pollution}},
language = {{eng}},
number = {{8}},
publisher = {{Springer}},
series = {{Water, Air, and Soil Pollution}},
title = {{Critical Review of Electro-kinetic Remediation of Contaminated Soils and Sediments : Mechanisms, Performances and Technologies}},
url = {{http://dx.doi.org/10.1007/s11270-021-05182-4}},
doi = {{10.1007/s11270-021-05182-4}},
volume = {{232}},
year = {{2021}},
}