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, J. Hwang

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


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
Issue number12
Publication statusPublished - 2008 Dec

Bibliographical note

Funding Information:
This work is part of the project, “Development of Partial Zero Emission Technology for Future Vehicles”, funded by the Ministry of Commerce, Industry and Energy and we are grateful for their financial support.

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Pollution
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes
  • Atmospheric Science


Dive into the research topics of 'Development and performance test of a thermo-denuder for separation of volatile matter from submicron aerosol particles'. Together they form a unique fingerprint.

Cite this