In situ analysis of the interaction of manganese vapor and silica microspheres in a laboratory-scale combustor

K. Iida, C. Y. Wu, D. W. Hahn

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

To simulate and better understand toxic metal-sorbent particle interactions, laser-induced breakdown spectroscopy (LIBS) was implemented to quantify trace amounts of manganese enriched on the surface of concomitant silica microsphere particles in an optical access laboratory-scale combustion system. Flame atomic absorption measurements verified that introduced manganese nanoparticles were extensively dissociated within the high-temperature region of the H2-O2-N2-air flame. LIBS-based conditional spectral analysis was performed using the Si (I) 288.1 nm atomic emission line with a spectral window containing both silicon and manganese atomic emission lines. The presence of silicon was found to have no effect on the emission intensity of the Mn triplet near 279 nm. The enrichment of manganese on the silica particles was observed in situ using the LIBS technique. The experimental trends agree very well with the theoretical trend predicted by modeling the aerosol system by accounting for nucleation, condensation, and coagulation processes.

Original languageEnglish (US)
Pages (from-to)453-480
Number of pages28
JournalCombustion science and technology
Volume176
Issue number3
DOIs
StatePublished - Mar 2004
Externally publishedYes

Keywords

  • Aerosol
  • Condensation
  • Emissions
  • Formation
  • LIBS
  • Manganese
  • Silicon

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology
  • General Physics and Astronomy

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