Heavy metals and organic contaminants impact on smectite behaviors at a similar double layer thickness
VR Ouhadi, M Yaghoubi
Dans les comptes rendus d’articles de la conférence: GeoSaskatoon 2023: 76th Canadian Geotechnical ConferenceSession: Geoenvironmental 2
ABSTRACT: Despite extensive research about soil contaminant interaction, there needs to be more research on the geo-environmental behavior of smectite with different contaminants while the double layer thickness is remained similar. The main objective of this paper is to study the mechano-chemical behavior of smectite samples contaminated with different organic components at an equal double-layer thickness. The experimental study includes a series of unconfined compression tests, Atterberg limits, and XRD tests to address contaminated smectite's microstructural changes and engineering properties. The results suggest that even though, according to the double layer theory, the dielectric constant is the primary factor that controls the soil-organic interaction process, the influence of other characteristics of organic compounds, such as molecule weight is the dominant controlling factor. This indicates some of the significant limitations of the double layer theory for clay-organic contaminant interaction.
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Citer cet article:
Ouhadi, VR, Yaghoubi, M (2023) Heavy metals and organic contaminants impact on smectite behaviors at a similar double layer thickness in GEO2023. Ottawa, Ontario: Canadian Geotechnical Society.
@inproceedings{Ouhadi_GEO2023_34,
author = {{Ouhadi, VR}, {Yaghoubi, M}}
title = {Heavy metals and organic contaminants impact on smectite behaviors at a similar double layer thickness }
booktitle = {Proceedings of the 76th Canadian Geotechnical Conference}
year = {2023}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
title = {Heavy metals and organic contaminants impact on smectite behaviors at a similar double layer thickness }
booktitle = {Proceedings of the 76th Canadian Geotechnical Conference}
year = {2023}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }