CO 2 absorption enhancement by methanol-based Al 2O 3 and SiO 2 nanofluids in a tray column absorber

Israel Torres Pineda, Jae Won Lee, Inhwa Jung, Yong Tae Kang

Research output: Contribution to journalArticlepeer-review

117 Citations (Scopus)


In the present study, suspensions of Al 2O 3 and SiO 2 nanoparticles in methanol (nanofluid) are produced and analyzed for the application of CO 2 absorption in a tray column absorber. The absorber is an acrylic tray column with twelve plates. The column is a sieve tray type which has flat perforated plates where the vapor velocity keeps the liquid from flowing down through the holes and the CO 2 gas and methanol liquid are brought in contact in a counter-current flow. The test section is equipped with two mass flow meters to measure the absorption rate. The results show maximum enhanced absorption rates of 9.4% and 9.7% for Al 2O 3 and SiO 2 particles (compared to pure methanol), respectively. It is also found that SiO 2 nanoparticle is a better candidate than Al 2O 3 nanoparticle and 0.05 vol% of nanoparticles is an optimum condition for CO 2 absorption enhancement for the present experimental conditions.

Original languageEnglish
Pages (from-to)1402-1409
Number of pages8
JournalInternational Journal of Refrigeration
Issue number5
Publication statusPublished - 2012 Aug
Externally publishedYes


  • Absorption
  • Bubbles
  • Carbon dioxide
  • Continuous flow
  • Enhancement
  • Methanol
  • Particle

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering


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