EPA 540/M5-92/009
Electron Beam Treatment for the Removal of
Trichloroethylene and Tetrachloroethylene
from Streams and Sludge
Florida International University and the
University of Miami
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Electron Beam Treatment for the Removal of Benzene
and Toluene from Aqueous Streams and Sludge Florida International University
and the University of Miami (16K)
ABSTRACT
Electron Beam Treatment for the Removal of Trichloroethylene and Tetrachloroethylene
from Streams and Sludge
Florida International University and the University of Miami Emerging Technology
Bulletin
EPA 540/M5-92/009
September 1992
Irradiation of aqueous solutions with high-energy electrons results in the formation
of the aqueous electron, e-aq ; hydrogen radical, H-; and the hydroxyl radical,
OH-. These reactive transient species initiate chemical reactions capable of
destroying organic compounds in aqueous solution, in most cases oxidizing them
to carbon dioxide, water and salt. No sludge is formed and no pretreatment is
necessary. The reaction by-products are non-toxic, and the process represents
a new technology for the restoration of contaminated water, soils and sediments.
This process can treat complex mixtures of hazardous chemicals in drinking water,
groundwater, wastewater, and water containing up to 5 percent suspended solids.
It can be utilized to remove various organic chemicals. Several different experiments
with electron beam irradiation of aqueous streams were conducted. In tests to
compare the dose required to remove 99 percent of the trichloroethylene and
tetrachloroethylene in three different quality waters at the lower and higher
initial solute concentration, it was apparent that the removal of the TCE and
PCE required a smaller dose in potable water than in either wastewaters. The
removal of PCE required a higher dose than TCE under equivalent conditions.
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Posted February 26, 1999
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