Nonequilibrium mass transfer of multi-component NAPL in a soil column venting

Sang-Hyup Lee, I. T. Yeom, K. H. Ahn, Jeehyeong Khim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This study was conducted to investigate the mass transfer behavior for a multi-component system in the soil venting process. Soil venting experiments were conducted using gasoline-contaminated soil and models of local equilibrium assumption (LEA) and the first-order kinetic approach were used to describe the gasoline volatilization process. However, the focus was on the application of the kinetic model. In both models, thirteen major components of gasoline were selected for the model input and the rest of the gasoline was divided into 11 groups based on the retention times in the gas chromatography of gasoline. The LEA model had the tendency of underestimating the gas concentration at the initial phase and overestimating at the later phase due to the different volatilities of multi-components. In the kinetic model, the estimation of mass transfer coefficient values were carried out by adopting the relationship developed in the single-components system and choosing the appropriate modified Sherwood number. This method resulted in the good agreement with the simulation and the experimental results.

Original languageEnglish
Pages (from-to)741-748
Number of pages8
JournalEnvironmental Technology
Volume22
Issue number6
Publication statusPublished - 2001 Jul 24

Fingerprint

Gasoline
venting
nonaqueous phase liquid
soil column
mass transfer
Soil
Mass transfer
Soils
Volatilization
kinetics
Mass Behavior
Kinetics
Gas Chromatography
volatilization
Vaporization
Gas chromatography
Gases
gas chromatography
soil
gas

Keywords

  • Gasoline
  • Kinetic
  • Mass transfer coefficient
  • Model
  • Multi-component
  • Nonequilibrium
  • Soil venting

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry

Cite this

Nonequilibrium mass transfer of multi-component NAPL in a soil column venting. / Lee, Sang-Hyup; Yeom, I. T.; Ahn, K. H.; Khim, Jeehyeong.

In: Environmental Technology, Vol. 22, No. 6, 24.07.2001, p. 741-748.

Research output: Contribution to journalArticle

Lee, Sang-Hyup ; Yeom, I. T. ; Ahn, K. H. ; Khim, Jeehyeong. / Nonequilibrium mass transfer of multi-component NAPL in a soil column venting. In: Environmental Technology. 2001 ; Vol. 22, No. 6. pp. 741-748.
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