Case Study

Multi-Pollutant System

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This research investigated how the wavelengths of light emitted by mercury lamps affects radical generation and chemistry in an oxidation flow reactor. Different types of lamps were designed and tested, and the Model 106-M Ozone Monitor measured the ozone concentration at the exit of the flow reactor. Empirical estimation equations could be used to predict the hydroxyl radical production, a much simpler approach than using photochemical models.

In this study, a new method of cleaning the cabins of passenger airplanes was studied. High ozone was pumped into the aircraft’s air conditioning system. The 0-100 ppm range of the Model 106-L enabled researchers to monitor the fumigation levels of the ozone as well as the fallback to safe levels. Hospital-grade sterilization was achieved in about 90 minutes of treatment, with the added benefit of the ability of ozone to penetrate the hard-to-reach places on the plane, such as tray tables in the locked & upright position.

Researchers at the University of São Paulo are studying the use of ozone as a more environmentally sound method for modifying the properties of starch. Industrial sectors that use starch include food, petrochemical, adhesives, paints, and others. This study applied high ozone and used the Model 106-H Ozone Monitor to follow the inlet and outlet concentrations of a reactor containing the starch. The study identified several techniques for optimizing starch properties.