UNIQAIR providing Odor Evaluation Service with PURDUE UNIVERSITY Odor Lab


Source: Uniqair Technologies Ltd.

New Odor Sampling Procedure for Petfood and fishfeed dryers:

Special odor sampling procedure with nitrogen dilution has been developed by Uniqair and Purdue University Odor Lab for odor samples with high humidity from fishfeed and Petfood dryers. The nitrogen will preserve the odor and prevent condensation for more accurate odor concentration test results. Unlike VOC testing, the odor lab is utilizing human noses of screened panel members with odor sensing capabilities that reflect the average person according the latest ASTM and CEN odor testing standards. Odor samples are diluted until detection threshold; the required number of dilution is the odor concentration: DT (Detection Threshold) or ou/m3 (Odor Units per cubic meter). Some Petfood recipes with high fat and protein content can have high odor concentrations in the (untreated) air from the dryers of 100,000 DT or ou/m3. This means it needs a stack dilution of 100,000 to ground level. Fish feed generally has even more odor, so for fish feed or Petfood containing fish, a Plasma-Injector with more energy capacity is applied to oxidize these odors. Most countries/states now recognize the latest European CEN-13725 odor standards and cold plasma odor oxidation for feed and Petfood dryer stack odor control.

Plasma-Injector stack odor oxidation process (www.uniqair.com):

Uniqair Technologies Ltd (BC-Canada):
We are the originators of cold plasma injection odor control systems for stack emissions. Unlike incinerators, chemical- or water scrubbers or bio-systems, the PLASMA-INJECTORTM is an oxidizer that does not need any chemicals or water and does not generate any waste. Our experience includes over 100 systems for stack odor control: dryers of Petfood, fish feed etc.

Plasma-Injector: a compact cold plasma-injection technology, selected as Best Available Technology in Europe, Asia and N-America. The Plasma-Injector is oxidizing odors instantly with oxygen radical injection from ambient air; for example 12,000 cfm (20,000 m3/h) with only 6 to 9kW energy consumption. Simple on/off control. See www.uniqair.com or info@uniqair.com for more info.

Please visit us at the upcoming trade shows for the feed and Petfood industry:
- IPPE Atlanta, at booth# 3120, January 28-30, 2014.
- Petfood Forum Chicago, booth# 308, March 31 – April 3, 2014.
- VICTAM Bangkok, Thailand, booth# C053, April 8-10, 2014.

Purdue University (IN - USA)
The Purdue Agricultural Air Quality Laboratory (PAAQL) is part of the Department of Agricultural and Biological Engineering at Purdue University, West Lafayette, Indiana, USA. The PAAQL specializes in odor assessment using field and laboratory olfactometry, chemical analyses using gas chromatographymass spectrometry with olfactory sensing (GC-MS-O), ion chromatography, closed-cell FTIR spectrometry, and continuous emissions monitoring of ammonia, hydrogen sulfide, carbon dioxide, methane, nitrous oxide, ethanol, methanol and particulate matter. PAAQL personnel have been studying the science and engineering of odor, gas, and dust emissions since January of 1994. Our research has served industry, government and agribusiness, in addition to communities at large. More info at https://engineering.purdue.edu/~odor/ More information re. this press release at www.uniqair.com or email us at info@uniqair.com .

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