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DTSTART:20230312T070000
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DTSTART:20221106T060000
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DTSTART;TZID=America/Toronto:20230905T130000
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URL:https://uwaterloo.ca/chemical-engineering/events/masc-oral-exam-synthes
 is-and-characterization-polymeric-gas
LOCATION:E6 - Engineering 6 200 University Ave West Room 2022 Waterloo ON N
 2L 3G1 Canada
SUMMARY:MASc Oral Exam| Synthesis and Characterization of Polymeric Gas\nSe
 nsing Materials for Detection of Agricultural Lagoon Off-Gas by\nKayoung (
 Gina) Kim
CLASS:PUBLIC
DESCRIPTION:To monitor the progress of manure fermentation and control gas\
 npollutants from manure lagoon released into the atmosphere\, a sensor\nth
 at can detect components of biogas in a reliable manner is\nnecessary. Any
  sensor requires a sensing material that responds to one\nspecific gas ana
 lyte. Polyaniline (PANI)\, PPy and PDMS are found to\nhave affinity for am
 monia and/or methane.\n\nThey were tested with gas chromatography using fo
 rmaldehyde. PANI\nshowed better sorption. SnO2\, ZnO\, SDS\, TiO2 and HCl 
 were selected as\ndopants for PANI. PANI was synthesized with varying dopa
 nt levels for\nGC testing. When tested with the MEMS sensor\, both PANI wi
 th SnO2 and\nZnO sorbed methane at ambient temperature. PANI-5% ZnO was pr
 oven to\nbe the most suitable sensing material for methane detection\, sho
 wing\nthe highest signal at 50 ppm methane levels.
DTSTAMP:20260527T152537Z
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