Fundamentals for the Thermal Remediation of Contaminated Soils. Particle and Bed Desorption Models

JoAnn S. Lighty; Geoffrey D. Silcox; David W. Pershing; Vic A. Cundy; David G. Linz

doi:10.1021/es00075a022

Fundamentals for the Thermal Remediation of Contaminated Soils. Particle and Bed Desorption Models

JoAnn S. Lighty, Geoffrey D. Silcox, David W. Pershing, Vic A. Cundy, David G. Linz

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Abstract

A major research effort has been initiated to characterize the rate-controlling processes associated with the evolution of hazardous materials from soils. A 3-fold experimental approach was used in conjunction with computer modeling to analyze thermal desorption of contaminants. Phenomena occurring both inside particles (intraparticle) and within a bed of particles (interparticle) were studied. The results obtained suggest that the most important process variables are local thermal environment and gas-phase contaminant concentration because the adsorption equilibrium characteristics of the contaminant/soil pair control the desorption of contaminant from a particle at a given temperature. A mass-transfer/desorption model, which assumes gas/solid equilibrium at all points and time, is proposed and the model was found to predict the measured temperature dependence.

Original language	American English
Journal	Environmental Science & Technology
Volume	24
Issue number	5
DOIs	https://doi.org/10.1021/es00075a022
State	Published - 1 May 1990
Externally published	Yes

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Chemical Engineering

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title = "Fundamentals for the Thermal Remediation of Contaminated Soils. Particle and Bed Desorption Models",

abstract = " A major research effort has been initiated to characterize the rate-controlling processes associated with the evolution of hazardous materials from soils. A 3-fold experimental approach was used in conjunction with computer modeling to analyze thermal desorption of contaminants. Phenomena occurring both inside particles (intraparticle) and within a bed of particles (interparticle) were studied. The results obtained suggest that the most important process variables are local thermal environment and gas-phase contaminant concentration because the adsorption equilibrium characteristics of the contaminant/soil pair control the desorption of contaminant from a particle at a given temperature. A mass-transfer/desorption model, which assumes gas/solid equilibrium at all points and time, is proposed and the model was found to predict the measured temperature dependence. ",

author = "Lighty, \{JoAnn S.\} and Silcox, \{Geoffrey D.\} and Pershing, \{David W.\} and Cundy, \{Vic A.\} and Linz, \{David G.\}",

year = "1990",

month = may,

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doi = "10.1021/es00075a022",

language = "American English",

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TY - JOUR

T1 - Fundamentals for the Thermal Remediation of Contaminated Soils. Particle and Bed Desorption Models

AU - Lighty, JoAnn S.

AU - Silcox, Geoffrey D.

AU - Pershing, David W.

AU - Cundy, Vic A.

AU - Linz, David G.

PY - 1990/5/1

Y1 - 1990/5/1

N2 - A major research effort has been initiated to characterize the rate-controlling processes associated with the evolution of hazardous materials from soils. A 3-fold experimental approach was used in conjunction with computer modeling to analyze thermal desorption of contaminants. Phenomena occurring both inside particles (intraparticle) and within a bed of particles (interparticle) were studied. The results obtained suggest that the most important process variables are local thermal environment and gas-phase contaminant concentration because the adsorption equilibrium characteristics of the contaminant/soil pair control the desorption of contaminant from a particle at a given temperature. A mass-transfer/desorption model, which assumes gas/solid equilibrium at all points and time, is proposed and the model was found to predict the measured temperature dependence.

AB - A major research effort has been initiated to characterize the rate-controlling processes associated with the evolution of hazardous materials from soils. A 3-fold experimental approach was used in conjunction with computer modeling to analyze thermal desorption of contaminants. Phenomena occurring both inside particles (intraparticle) and within a bed of particles (interparticle) were studied. The results obtained suggest that the most important process variables are local thermal environment and gas-phase contaminant concentration because the adsorption equilibrium characteristics of the contaminant/soil pair control the desorption of contaminant from a particle at a given temperature. A mass-transfer/desorption model, which assumes gas/solid equilibrium at all points and time, is proposed and the model was found to predict the measured temperature dependence.

UR - http://dx.doi.org/10.1021/es00075a022

U2 - 10.1021/es00075a022

DO - 10.1021/es00075a022

M3 - Article

VL - 24

JO - Environmental Science & Technology

JF - Environmental Science & Technology

IS - 5

ER -

Fundamentals for the Thermal Remediation of Contaminated Soils. Particle and Bed Desorption Models

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