(19d) Validation of Impact Maps Obtained with Dispersions Models through Neigbourgh Annotations of Annoyance, and Chemical Analysis
AIChE Annual Meeting
2005
2005 Annual Meeting
Environmental Division
Environmental Fate and Transport Processes
Monday, October 31, 2005 - 8:56am to 9:14am
Results of the odor impact of a gelatin production plant are presented in three different ways in order to validate them:
- Map impact obtained with a Gaussian dispersion model, which operates with meteorological data from a local surface station in the zone of study, to calculate the relative concentrations of odor compounds emitted diffusely from the processing plant. - Annotations of smell perception of odor by neighbors in a scale range from 1 to 5. This is done systematically at least three times at day, in the periods 0-8 hours, 8-16 hours, and 16-24 hours. And also annotations are done during the strong odor episodes, indicating the duration and scale of annoyance. - Chemical analysis of air during several periods of 24 hours. The system is composed of a chemical compound adsorption multisorbent tube with a forced air flow, that is later analyzed by combining thermal desorption with high-resolution gas chromatography and mass spectrometry detection (TD-GC-MS) method.
This methodology shows that validated odor impact maps obtained could be a very useful tool to improve the air quality.
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