Volatilization during thermal plasma processing of glass melts containing heavy metals

Jeffrey W. Wood, David G. Cahill, Rebecca Cortez, Larry D. Stephenson, Hany H. Zaghloul

Research output: Contribution to journalConference articlepeer-review

Abstract

Thermal plasma technology offers promise as an effective tool to treat a variety of hazardous wastes containing heavy metals. In the present work, a plasma furnace is evaluated for experiment studies that will lead to an increased understanding of the mechanisms responsible for the volatilization of heavy metals from glass melts. The experimental system consists of a 75-kW transferred arc thermal plasma torch. Model waste specimens consisting of either high-alumina clay or silicate glasses spiked with 10 wt% iron, nickel, or chromium are processed in atmospheres with various oxygen partial pressures. Volatilization during processing is monitored using atomic emission spectroscopy. Particulate collected following each specimen run is analyzed by energy dispersive X-ray analysis to determine composition.

Original languageEnglish (US)
Pages (from-to)55-61
Number of pages7
JournalCeramic Engineering and Science Proceedings
Volume17
Issue number2
StatePublished - Jan 1 1996
EventProceedings of the 1995 56th Conference on Glass Problems - Urbana, IL, USA
Duration: Oct 24 1995Oct 25 1995

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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