We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Evidence of colloidal transport of PAHs during column experiments run with contaminated soil samples.
- Authors
Benhabib, Karim; Sardin, Michel; Simonnot, Marie-Odile; Faure, Pierre
- Abstract
Brownfield soils may contain high levels of organic pollutants particularly polycyclic aromatic hydrocarbons (PAHs). It is essential to predict their migration and fate and to evaluate the risk of transfer to sensitive targets, such as water resources, ecosystems and human health. In this study, soil samples have been taken from an experimental contaminated site of former steel activities located at Homecourt (Lorraine, France). These samples have been lixiviated in laboratory column in water-saturated condition at room temperature. The effluent has been collected by fraction and analysed by a standard method giving total concentration of each of 16 PAHs. The breakthrough curves of 16 PAHs significantly evolve in the same way according to the volume of effluent and tend to vanish to 12-15 pore volumes. If several PAHs remain at a concentration below the solubility, others clearly exceed this threshold. Material balance sheets show that only a very small fraction of PAHs is mobilised. These results are interpreted by postulating that PAHs are transported by the solution not only in the dissolved state but also by associations with particulate or dissolved organic matter.
- Subjects
POLYCYCLIC aromatic hydrocarbons; BIODEGRADATION of polycyclic aromatic hydrocarbons; POLYCYCLIC aromatic hydrocarbon analysis; SOIL pollution; SOIL testing
- Publication
Environmental Science & Pollution Research, 2017, Vol 24, Issue 10, p9220
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-017-8586-4