||Emerging Technology Report: Destruction of Organic Contaminants in Air Using Advanced Ultraviolet Flashlamps.
Johnson, M. D. ;
Haag, W. ;
Bylstone, P. G. ;
Daley, P. F. ;
||Purus, Inc., San Jose, CA. ;Lawrence Livermore National Lab., CA.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Air pollution control equipment ;
Flash lamps ;
Ultraviolet radiation ;
Luminous intensity ;
Quantum efficiency ;
Volatile organic compounds ;
||Some EPA libraries have a fiche copy filed under the call number shown.
The paper describes a new process for photo-oxidation of volatile organic compounds (VOCs) in air using an advanced ultraviolet source, a Purus xenon flashlamp. Two full scale air emissions control systems for trichloroethane (TCE) were constructed at Purus and tested at Lawrence Livermore National Laboratory (LLNL) Superfund Site. The systems were operated at flash frequencies of 1-30 Hz, temperatures of 33-60 C, flows up to 300 scfm (260 ppmv TCE) and concentrations up to 10,600 ppmv (100 scfm). Residence times ranged from 5 to 75 seconds. In all cases except the lowest flash frequency, greater than 99% removal of TCE was observed.