You are here:
HORIZONTAL LASAGNA^TM TO BIOREMEDIATE TCE
Citation:
DavisHoover*, W J., M H. Roulier*, L T. Bryndzia*, L. C. Murdoch, M C. Kemper, P. Cluxton, S. AlAbed, W. W. Slack, AND S J. Vesper. HORIZONTAL LASAGNA^TM TO BIOREMEDIATE TCE. (1999).
Description:
Removal of TCE from these tight clay soils has been technically difficult and expensive. However, the LASAGNA technique allows movement of the TCE into treatment zones for biodegradation or dechlorination in place, lessening the costs and exposure to TCE.
Electroosmosis waas conducted between an anode of titanium mesh placed upon the ground surface and a cathode composed of a horizontal graphite-filled fracture created at a depth of 4 m below the ground surface. Liquids were also pumped out of the cathode to maintain a downward hydraulic head gradient and liquid flow. Two types of remediation zones between the electrodes
were created by horizontal fracturing methods, this paper will discuss the bioremediation treeatment zone.
For bioremediation of the TCE, a single fracture consisting of granular activated carbon (GAC) inoculated with a consortium of methanotrophic TCE degrading soil bacteria was created by hydraulic fracture between the electrodes within the contaminated clay material at 240 cm depth.