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

Handle URI:
http://hdl.handle.net/10754/597611
Title:
Assessing PAH removal from clayey soil by means of electro-osmosis and electrodialysis
Authors:
Lima, Ana T.; Ottosen, Lisbeth M.; Heister, Katja; Loch, J.P. Gustav
Abstract:
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 100. years. 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. © 2012.
Citation:
Lima AT, Ottosen LM, Heister K, Loch JPG (2012) Assessing PAH removal from clayey soil by means of electro-osmosis and electrodialysis. Science of The Total Environment 435-436: 1–6. Available: http://dx.doi.org/10.1016/j.scitotenv.2012.07.010.
Publisher:
Elsevier BV
Journal:
Science of The Total Environment
KAUST Grant Number:
KUK-C1-017-12
Issue Date:
Oct-2012
DOI:
10.1016/j.scitotenv.2012.07.010
PubMed ID:
22842591
Type:
Article
ISSN:
0048-9697
Sponsors:
We thank Bärbel Agres (Technische Universität München) for the PAH analysis. Frank Volkering from TAUW B.V., Deventer, The Netherlands is kindly acknowledged for providing the sample material and information about the contaminated site. This publication was based on work supported by award no KUK-C1-017-12, made by King Abdullah University of Science and Technology (KAUST).
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorLima, Ana T.en
dc.contributor.authorOttosen, Lisbeth M.en
dc.contributor.authorHeister, Katjaen
dc.contributor.authorLoch, J.P. Gustaven
dc.date.accessioned2016-02-25T12:43:02Zen
dc.date.available2016-02-25T12:43:02Zen
dc.date.issued2012-10en
dc.identifier.citationLima AT, Ottosen LM, Heister K, Loch JPG (2012) Assessing PAH removal from clayey soil by means of electro-osmosis and electrodialysis. Science of The Total Environment 435-436: 1–6. Available: http://dx.doi.org/10.1016/j.scitotenv.2012.07.010.en
dc.identifier.issn0048-9697en
dc.identifier.pmid22842591en
dc.identifier.doi10.1016/j.scitotenv.2012.07.010en
dc.identifier.urihttp://hdl.handle.net/10754/597611en
dc.description.abstractPolycyclic 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 100. years. 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. © 2012.en
dc.description.sponsorshipWe thank Bärbel Agres (Technische Universität München) for the PAH analysis. Frank Volkering from TAUW B.V., Deventer, The Netherlands is kindly acknowledged for providing the sample material and information about the contaminated site. This publication was based on work supported by award no KUK-C1-017-12, made by King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.subjectElectro-osmosisen
dc.subjectElectrodialysisen
dc.subjectPolycyclic aromatic hydrocarbonsen
dc.subjectSoil remediationen
dc.subjectSurfactanten
dc.titleAssessing PAH removal from clayey soil by means of electro-osmosis and electrodialysisen
dc.typeArticleen
dc.identifier.journalScience of The Total Environmenten
dc.contributor.institutionUtrecht University, Utrecht, Netherlandsen
dc.contributor.institutionUniversity of Waterloo, Waterloo, Canadaen
dc.contributor.institutionDanmarks Tekniske Universitet, Lyngby, Denmarken
dc.contributor.institutionTechnische Universitat Munchen, Munich, Germanyen
kaust.grant.numberKUK-C1-017-12en

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