HR: 0802h
AN: NS11C-0691    [Abstracts]
TI: Self Potential as a method of monitoring the effectiveness of insitu remediation technologies
AU: * Doherty, R
EM: r.doherty@qub.ac.uk
AF: Queens University Belfast, Stranmillis Road, Belfast, BT71NN, United Kingdom
AU: Moore, S
EM: s.moore29@qub.ac.uk
AF: Queens University Belfast, Stranmillis Road, Belfast, BT71NN, United Kingdom
AU: Ntarlagiannis, D
EM: d.Ntarlagiannis@qub.ac.uk
AF: Queens University Belfast, Stranmillis Road, Belfast, BT71NN, United Kingdom
AU: Singh, K
EM: kpsing03@qub.ac.uk
AF: Queens University Belfast, Stranmillis Road, Belfast, BT71NN, United Kingdom
AB: This project uses a 2D flow tank (dimensions 145cm x 85cm x 6.6cm) filled with sand, a gravel pack and slotted piezometer to monitor the effectiveness of commonly used groundwater sparging systems. The flow tank is designed to have a hydraulic gradient maintained by lateral flow. Two types of SP electrodes were constructed and compared - Pb-PbCl Petiau electrodes and Ag-AgCl electrodes utilizing agar as a fixing agent. The electrodes are evenly spaced along the hydraulic gradient with the reference in contact with fluid at the base of the tank. Falling head tests are conducted before and after each sparging event to monitor changes in hydraulic conductivity. Down borehole insitu remediation technologies are difficult to design, effectively monitor and validate. Often additional monitoring boreholes have to be drilled at great expense to confirm zones of influence around groundwater remediation boreholes. The results of this work contribute to real time monitoring and development of groundwater remediation technologies
DE: 0416 Biogeophysics
DE: 0418 Bioremediation
SC: Near-Surface Geophysics [NS]
MN: 2007 Fall Meeting