Accession Number:

ADA539858

Title:

Decontamination Strategy for Large Area and/or Equipment Contaminated with Chemical and Biological Agents using a High Energy Arc Lamp (HEAL)

Descriptive Note:

Corporate Author:

OAK RIDGE NATIONAL LAB TN MATERIALS SCIENCE AND TECHNOLOGY DIV

Report Date:

2009-04-01

Pagination or Media Count:

23.0

Abstract:

A strategy for the decontamination of large areas and or equipment contaminated with Biological Warfare Agents BWAs and Chemical Warfare Agents CWAs was demonstrated using a High Energy Arc Lamp HEAL photolysis system. This strategy offers an alternative that is potentially quicker, less hazardous, generates far less waste, and is easier to deploy than those currently fielded by the Department of Defense DoD. For example, for large frame aircraft the United States Air Force still relies on the combination of weathering stand alone in environment, air washing fly aircraft and finally washing the aircraft with Hot Soapy Water HSW in an attempt to remove any remaining contamination. This method is laborious, time consuming upwards of 12 hours not including decontamination site preparation, and requires large amounts of water e.g., 1,600 gallons for a single large frame aircraft, and generates large amounts of hazardous waste requiring disposal. The efficacy of the HEAL system was demonstrated using diisopropyl methyl phosphonate DIMP a G series CWA simulant, and Bacillus globigii BG a simulant of Bacillus anthracis. Experiments were designed to simulate the energy flux of a field deployable lamp system that could stand-off 17 meters from a 12mexp 2 target area and uniformly expose a surface at 1360 Wmexp 2. The HEAL system in the absence of a catalyst reduced the amount of B. globigii by five orders of magnitude at a starting concentration of 1.63 x 10exp 7 spores. In the case of CWA simulants, the HEAL system in the presence of the catalyst TiO2 effectively degraded DIMP sprayed onto a 100mm diameter Petri dish in 5 minutes.

Subject Categories:

  • Air Conditioning, Heating, Lighting and Ventilating
  • Chemical, Biological and Radiological Warfare

Distribution Statement:

APPROVED FOR PUBLIC RELEASE