Abstract From USDA Study
"The RADOX catalyst was shown to be significantly more effective than
chlorine dioxide (ClO2) for reducing the concentration of malodorous
VOC and total VOC emitted from poultry rendering. Samples from RADOX-treated air streams had (1) a 42±14% (the average plus or minus
the standard deviation) higher concentration of carbon dioxide (CO2),
(2) 69±9% lower concentrations of the highly aldehyde compounds, and
(3) 52±13% lower total VOC when compared to untreated, or ClO2-treated
samples. The concentration of highly malodorous aldehyde compounds,
which were responsible for a majority of the poultry rendering odor,
were not changed by the ClO2 treatment.
Additionally, there was a 5-fold higher concentration of indole in the
ClO2 samples when compared to RADOX-treated samples. This is important
because indole is a highly odorous metabolite from protein degradation
that has an odor threshold of 0.0019 mg/m3 (Zahn et al., 2001). The RADOX treatment reduced the total perceived odor intensity by 74±19%,
while the ClO2 treatment did not significantly alter the odor
intensity."
From the USDA study Effect
Of A Packed-Bed Scrubber Using Radox Catalyst On The Emission of Odors
And Volatile Organic Compounds From A Commercial Poultry Rendering Plant by Zahn et al., 2002
