Accession Number:

ADA285197

Title:

Use of Infrared Spectrometry to Determine the Effect of Temperature on the Description Rates of Trichloroethylene from Plastic Clay 98b

Descriptive Note:

Final rept.

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH SCHOOL OF ENGINEERING

Personal Author(s):

Report Date:

1994-08-01

Pagination or Media Count:

148.0

Abstract:

This thesis investigated the influence of temperature on the desorption rated of trichloroethylene TCE from plastic clay. It was expected that an increase in temperature will cause an increase in both the desorption rates of TCE and in the desorbed quantity. Previous studies on other chemicals indicated a faster decrease in the remaining sorbed concentration with an increase in temperature. This research made use of the infrared optical absorption technique. IR spectroscopy was used to measure the concentration of the vapor TCE that desorbed from the soil. The soil was exposed to liquid TCE for 2 days then placed inside an enclosed glass tube and was allowed to desorb at a fixed temperature for a period of 4 hours. Similar experiments were performed with temperature as the only variable. The results were an initial and rapid desorption followed by a leveling off. The rate of the initial desorption was found to increase with temperature and the quantity desorbed was also found to increase. The data was analyzed and was found to follow the Langmuir kinetic model. Trichloroethylene, Desorption, Infrared, Plastic clay diffusion, Temperature, Langmuir isotherm, Spectroscopy volatile organic compounds, Energy bonds, Adsorption.

Subject Categories:

  • Organic Chemistry
  • Physical Chemistry
  • Atomic and Molecular Physics and Spectroscopy
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE