Patent ID: 7138145

Claim:
A process for treating grain in-situ comprising the steps: a) pulling a gas stream from the top of a grain containment area to the bottom of the container via a fan located at the bottom of the grain containment area; b) introducing ozone into the top of the container sufficient to maintain a concentration of between 35 and 200 ppm throughout the entire grain containment area, with the proviso that if the grain is being treated for other than mold only, that sufficient ozone be introduced to maintain the concentration of ozone between 50 and 200 ppm throughout said grain containment area; c) taking the gases from the bottom of the grain container and re-circulating those gases via a large duct back to the top of the container so that they may be reused; and d) monitoring the concentration of the ozone at the bottom of the containment area to maintain the concentration in the grain at a level of at least 35 ppm, if the grain is being treated for mold only, otherwise, at a level of at least 50 ppm.