Assessing PAH removal from clayey soil by means of electro-osmosis and electrodialysis

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Assessing PAH removal from clayey soil by means of electro-osmosis and electrodialysis. / Lima, Ana T.; Ottosen, Lisbeth M.; Heister, Katja; Loch, J.P. Gustav.

In: Science of the Total Environment, Vol. 435-436, 2012, p. 1-6.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Author

Lima, Ana T.; Ottosen, Lisbeth M.; Heister, Katja; Loch, J.P. Gustav / Assessing PAH removal from clayey soil by means of electro-osmosis and electrodialysis.

In: Science of the Total Environment, Vol. 435-436, 2012, p. 1-6.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{40151b9bafbc4ec4b3681f6517fdf9d3,
title = "Assessing PAH removal from clayey soil by means of electro-osmosis and electrodialysis",
publisher = "Elsevier BV",
author = "Lima, {Ana T.} and Ottosen, {Lisbeth M.} and Katja Heister and Loch, {J.P. Gustav}",
year = "2012",
doi = "10.1016/j.scitotenv.2012.07.010",
volume = "435-436",
pages = "1--6",
journal = "Science of the Total Environment",
issn = "0048-9697",

}

RIS

TY - JOUR

T1 - Assessing PAH removal from clayey soil by means of electro-osmosis and electrodialysis

A1 - Lima,Ana T.

A1 - Ottosen,Lisbeth M.

A1 - Heister,Katja

A1 - Loch,J.P. Gustav

AU - Lima,Ana T.

AU - Ottosen,Lisbeth M.

AU - Heister,Katja

AU - Loch,J.P. Gustav

PB - Elsevier BV

PY - 2012

Y1 - 2012

N2 - Polycyclic aromatic hydrocarbons (PAH) are persistent and toxic contaminants which are difficult to remove from fine porous material like clayey soils. The present work aims at studying two electroremediation techniques for the removal of PAHs from a spiked natural silt soil from Saudi Arabia and a silty loam soil from The Netherlands which has been exposed to tar contamination for over 100years. The two techniques at focus are electro-osmosis and electrodialysis. The latter is applied for the first time for the removal of PAH. The efficiency of the techniques is studied using these two soils, having been subjected to different PAH contact times.Two surfactants were used: the non-ionic surfactant Tween 80 and anionic surfactant sodium dodecyl sulphate (SDS) to aid desorption of PAHs from the soil. Results show a large discrepancy in the removal rates between spiked soil and long-term field contaminated soil, as expected. In spiked soil, electro-osmosis achieves up to 85% while electrodialysis accomplishes 68% PAH removal. In field contaminated soil, electro-osmosis results in 35% PAH removal whereas electrodialysis results in 79%. Short recommendations are derived for the up-scale of the two techniques.

AB - Polycyclic aromatic hydrocarbons (PAH) are persistent and toxic contaminants which are difficult to remove from fine porous material like clayey soils. The present work aims at studying two electroremediation techniques for the removal of PAHs from a spiked natural silt soil from Saudi Arabia and a silty loam soil from The Netherlands which has been exposed to tar contamination for over 100years. The two techniques at focus are electro-osmosis and electrodialysis. The latter is applied for the first time for the removal of PAH. The efficiency of the techniques is studied using these two soils, having been subjected to different PAH contact times.Two surfactants were used: the non-ionic surfactant Tween 80 and anionic surfactant sodium dodecyl sulphate (SDS) to aid desorption of PAHs from the soil. Results show a large discrepancy in the removal rates between spiked soil and long-term field contaminated soil, as expected. In spiked soil, electro-osmosis achieves up to 85% while electrodialysis accomplishes 68% PAH removal. In field contaminated soil, electro-osmosis results in 35% PAH removal whereas electrodialysis results in 79%. Short recommendations are derived for the up-scale of the two techniques.

KW - Soil remediation

KW - Polycyclic aromatic hydrocarbons

KW - Surfactant

KW - Electro-osmosis

KW - Electrodialysis

U2 - 10.1016/j.scitotenv.2012.07.010

DO - 10.1016/j.scitotenv.2012.07.010

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

VL - 435-436

SP - 1

EP - 6

ER -