Development and performance test of a thermo-denuder for separation of volatile matter from submicron aerosol particles

Park D. Park, S. Kim, N. K. Choi, Jungho Hwang

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In this study we designed and evaluated a home-made thermo-denuder (TD) both experimentally and numerically. Sodium chloride (NaCl) particles, toluene gas, and carbon black particles were used for the performance evaluation of the TD. The TD was evaluated for various set-point air temperatures and particle sizes using the following three parameters: the temperature profile, penetration efficiency, and gas adsorption efficiency. At 0.6 l min- 1, the temperature was nearly uniform, remaining within ± 15 {ring operator} C of the set-point temperature, in the heating section and decreased to the temperature of ambient air in the cooling section. The particle penetration efficiencies were 93-96% at 20 {ring operator} C and 58-67% at 300 {ring operator} C for particle sizes of 20-60 nm. The gas adsorption efficiency was nearly unity until the breakthrough time of 65 h, and the total amount of toluene adsorbed by activated carbon particles was 72 mg-toluene/g-activated carbon particles. From size distribution measurements of dry carbon black and toluene enriched carbon black particles, the mode diameter measured at the set-point temperature of 300 {ring operator} C was found to be 48.6 nm, which agreed with the one obtained from the dry particle measurements. The overall number concentration obtained after particle losses were compensated was lower than that measured without using the TD by 35.6%, which was caused by gas adsorption in the TD.

Original languageEnglish
Pages (from-to)1099-1108
Number of pages10
JournalJournal of Aerosol Science
Volume39
Issue number12
DOIs
Publication statusPublished - 2008 Jan 1

Fingerprint

Aerosols
Particles (particulate matter)
Toluene
aerosol
Soot
Gas adsorption
Carbon black
toluene
black carbon
Activated carbon
Temperature
adsorption
Particle size
gas
activated carbon
penetration
temperature
particle size
Sodium chloride
Air

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Materials Science(all)
  • Pollution

Cite this

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title = "Development and performance test of a thermo-denuder for separation of volatile matter from submicron aerosol particles",
abstract = "In this study we designed and evaluated a home-made thermo-denuder (TD) both experimentally and numerically. Sodium chloride (NaCl) particles, toluene gas, and carbon black particles were used for the performance evaluation of the TD. The TD was evaluated for various set-point air temperatures and particle sizes using the following three parameters: the temperature profile, penetration efficiency, and gas adsorption efficiency. At 0.6 l min- 1, the temperature was nearly uniform, remaining within ± 15 {ring operator} C of the set-point temperature, in the heating section and decreased to the temperature of ambient air in the cooling section. The particle penetration efficiencies were 93-96{\%} at 20 {ring operator} C and 58-67{\%} at 300 {ring operator} C for particle sizes of 20-60 nm. The gas adsorption efficiency was nearly unity until the breakthrough time of 65 h, and the total amount of toluene adsorbed by activated carbon particles was 72 mg-toluene/g-activated carbon particles. From size distribution measurements of dry carbon black and toluene enriched carbon black particles, the mode diameter measured at the set-point temperature of 300 {ring operator} C was found to be 48.6 nm, which agreed with the one obtained from the dry particle measurements. The overall number concentration obtained after particle losses were compensated was lower than that measured without using the TD by 35.6{\%}, which was caused by gas adsorption in the TD.",
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Development and performance test of a thermo-denuder for separation of volatile matter from submicron aerosol particles. / D. Park, Park; Kim, S.; Choi, N. K.; Hwang, Jungho.

In: Journal of Aerosol Science, Vol. 39, No. 12, 01.01.2008, p. 1099-1108.

Research output: Contribution to journalArticle

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