Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 24-31 |
| Number of pages | 8 |
| Journal | Journal of Applied Geophysics |
| Volume | 115 |
| Early online date | 15 Nov 2014 |
| DOIs | |
| Publication status | Published - 1 Apr 2015 |
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Keywords
- geophysics
- ERT
- bioremediation
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Small scale monitoring of a bioremediation barrier using miniature electrical resistivity tomography. / Sentenac, Phillippe; Tom, Hogson; Keenan, Helen; Kulessa, Bernd.
In: Journal of Applied Geophysics, Vol. 115, 01.04.2015, p. 24-31.Research output: Contribution to journal › Article
TY - JOUR
T1 - Small scale monitoring of a bioremediation barrier using miniature electrical resistivity tomography
AU - Sentenac, Phillippe
AU - Tom, Hogson
AU - Keenan, Helen
AU - Kulessa, Bernd
PY - 2015/4/1
Y1 - 2015/4/1
N2 - The aim of this study was to assess, in the laboratory, the efficiency of a barrier of oxygen release compound (ORC) to block and divert a diesel plumemigration in a scaled aquifermodel usingminiature electrical resistivity tomography (ERT) as themonitoring system. Two plumes of contaminant (diesel) were injected in a soil model made of local sand and clay. The diesel plumesmigrationwas imaged andmonitored using aminiature resistivity array systemthat has proved to be accurate in soil resistivity variations in small-scaledmodels of soil. ERT results reflected the lateral spreading and diversion of the diesel plumes in the unsaturated zone. One of the contaminant plumes was partially blocked by the ORC barrier and a diversion and reorganisation of the diesel in the soil matrix was observed. The technique of time-lapse ERT imaging showed that a dense non-aqueous phase liquid (DNAPL) contaminant like diesel can be monitored through a bioremediation barrier and the technique is well suited to monitor the efficiency of the barrier. Therefore, miniature ERT as a small-scale modelling tool could complement conventional techniques, which require more expensive and intrusive site investigation prior to remediation
AB - The aim of this study was to assess, in the laboratory, the efficiency of a barrier of oxygen release compound (ORC) to block and divert a diesel plumemigration in a scaled aquifermodel usingminiature electrical resistivity tomography (ERT) as themonitoring system. Two plumes of contaminant (diesel) were injected in a soil model made of local sand and clay. The diesel plumesmigrationwas imaged andmonitored using aminiature resistivity array systemthat has proved to be accurate in soil resistivity variations in small-scaledmodels of soil. ERT results reflected the lateral spreading and diversion of the diesel plumes in the unsaturated zone. One of the contaminant plumes was partially blocked by the ORC barrier and a diversion and reorganisation of the diesel in the soil matrix was observed. The technique of time-lapse ERT imaging showed that a dense non-aqueous phase liquid (DNAPL) contaminant like diesel can be monitored through a bioremediation barrier and the technique is well suited to monitor the efficiency of the barrier. Therefore, miniature ERT as a small-scale modelling tool could complement conventional techniques, which require more expensive and intrusive site investigation prior to remediation
KW - geophysics
KW - ERT
KW - bioremediation
UR - http://www.sciencedirect.com/science/article/pii/S0926985114003255
U2 - 10.1016/j.jappgeo.2014.11.006
DO - 10.1016/j.jappgeo.2014.11.006
M3 - Article
VL - 115
SP - 24
EP - 31
JO - Journal of Applied Geophysics
JF - Journal of Applied Geophysics
SN - 0926-9851
ER -