|Source:||Lawrence Livermore National Laboratory|
|Date:||7/1/93 Record No.: 10015|
|Contact:||Jesse Yow, 510-422-3521|
Sensors--New class of fiber optic sensors down in a drill hole detect concentrations 1:10**6 (benzene => gasoline) and 1:10**9 (TCE). Dramatic reduction in cost to characterize/monitor an underground site in almost real time.
Underground Imaging:--Electromagnetic techniques using RF or DC current--can get 3-d images of pollutant plumes, or of the burn front of in situ coal gasification.
Spill Cleanup--Electric resistance heating and steam injection used to drive volatile compounds out of the earth, reducing time scale from 10's-100's of years to 10's of months.
(Ground heating may be applicable to ground source heat pump work.)
Radiolytic Decomposition of toxic Materials (Steve Matthews, 510-423-3052)
Use of E beams, x-rays and ultraviolet ionizing radiation to break down organic materials into harmless or less toxic materials. Can be applied to vapor or liquid phase, in remediation applications or process streams.