Removal of hydrophobic organic pollutants from soil washing/flushing solutions: A critical review

Abstract : The release of hydrophobic organoxenobiotics such as polycyclic aromatic hydrocarbons, petroleum hydrocarbons or polychlorobiphenyls results in long-term contamination of soils and groundwaters. This constitutes a common concern as these compounds have high potential toxicological impact. Therefore, the development of cost-effective processes with high pollutant removal efficiency is a major challenge for researchers and soil remediation companies. Soil washing (SW) and soil flushing (SF) processes enhanced by the use of extracting agents (surfactants, biosurfactants, cyclodextrins etc.) are conceivable and efficient approaches. However, this generates high strength effluents containing large amount of extracting agent. For the treatment of these SW/SF solutions, the goal is to remove target pollutants and to recover extracting agents for further SW/SF steps. Heterogeneous photocatalysis, technologies based on Fenton reaction chemistry (including homogeneous photocatalysis such as photo-Fenton), ozonation, electrochemical processes and biological treatments have been investigated. Main advantages and drawbacks as well as target pollutant removal mechanisms are reviewed and compared. Promising integrated treatments, particularly the use of a selective adsorption step of target pollutants and the combination of advanced oxidation processes with biological treatments, are also discussed.
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Article dans une revue
Journal of Hazardous Materials, Elsevier, 2015, 306, pp.149-174. <http://www.sciencedirect.com/science/article/pii/S0304389415302685>
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https://hal.univ-lorraine.fr/hal-01413709
Contributeur : Emmanuel Mousset <>
Soumis le : samedi 10 décembre 2016 - 19:12:38
Dernière modification le : jeudi 27 avril 2017 - 11:40:10

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  • HAL Id : hal-01413709, version 1

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C. Trellu, Emmanuel Mousset, Yoan Pechaud, David Huguenot, Eric D. Van Hullebusch, et al.. Removal of hydrophobic organic pollutants from soil washing/flushing solutions: A critical review. Journal of Hazardous Materials, Elsevier, 2015, 306, pp.149-174. <http://www.sciencedirect.com/science/article/pii/S0304389415302685>. <hal-01413709>

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