Dépollution de sols contaminés par des hydrocarbures aromatiques polycycliques : les minéraux peuvent-ils être des acteurs de dépollution ?

Abstract : The high reactivity of certain mineral phases (clays, iron oxides ...) can be used to catalyze the degradation or stabilization of organic contaminants (including hydrocarbons) in the context of low-temperature oxidation. To put this into evidence, the air oxidation experiments were carried out for 5 months at two temperatures (60° and 100° C) in the laboratory with three mineral matrices: two of them considered as reactive (goethite, smectite) and one as reference (sand). Two complementary methods were applied: (i) simple: Doping mineral phases only by organic extracts from coking soils (Homécourt and Neuves Maisons), (ii) complex: a mixture of mineral phases with the raw coking soils (Homécourt and Neuves Maisons) associating the organic extract, non-extractable organic fraction and mineral fraction of the soil. The results presented in this report suggest that (i) for the simple system, the reduction of the organic extract (including PAH) is mainly due to their incorporation into the reactive solid matrices (goethite and smectite), but oxygenated polycyclic aromatic compounds (O-PAC) are generated, (ii) for the complex: the reductions of the contents of extract and PAH are significant (up to 80% reduction in the amount of extract and 95% of PAH). Moreover, unlike the doping experiments, the O-PAC decreases also.
Document type :
Master thesis
File URL :
http://docnum.univ-lorraine.fr/public/SCDSCI_M_2011_KOUADIO_OLIVIER.pdf
Complete list of metadatas

Cited literature [28 references]  Display  Hide  Download

https://hal.univ-lorraine.fr/hal-01877569
Contributor : Memoires Ul <>
Submitted on : Thursday, September 20, 2018 - 8:48:24 AM
Last modification on : Friday, September 21, 2018 - 1:02:27 AM
Long-term archiving on : Friday, December 21, 2018 - 12:47:03 PM

File

SCDSCI_M_2011_KOUADIO_OLIVIER....
Files produced by the author(s)

Identifiers

  • HAL Id : hal-01877569, version 1

Collections

Citation

Olivier Kouadio. Dépollution de sols contaminés par des hydrocarbures aromatiques polycycliques : les minéraux peuvent-ils être des acteurs de dépollution ?. Sciences de la Terre. 2011. ⟨hal-01877569⟩

Share

Metrics

Record views

64

Files downloads

33