GAS TRANSPORT OF VOLATILE ORGANIC COMPOUNDS IN UNSATURATED SOILS

2005 ◽  
Vol 69 (4) ◽  
pp. 990-995 ◽  
Author(s):  
Heonki Kim ◽  
Seungjae Lee ◽  
Ji-Won Moon ◽  
P. Suresh C. Rao
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Unsaturated Soils ◽  
Gas Transport ◽  
Volatile Organic

scholarly journals Seepage and Gas Diffusion of Volatile Organic Compounds in Unsaturated Soils.

1999 ◽  
pp. 25-32 ◽  
Author(s):  
Masanori SHIMOMURA ◽  
Satoshi IMAMURA ◽  
Toru SUEOKA ◽  
Tetsuo NAGATOU ◽  
Tatemasa HIRATA
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Unsaturated Soils ◽  
Gas Diffusion ◽  
Volatile Organic

scholarly journals Study of the influence of temperature the venting depollution process of soils contaminated with volatile organic compounds

2006 ◽  
Vol 71 (12) ◽  
pp. 1353-1361 ◽  
Author(s):  
Gabriela-Alina Brusturean ◽  
Jean Carré ◽  
Delia Perju ◽  
Teodor Todinca
Keyword(s):  
Mathematical Model ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Vapour Pressure ◽  
Unsaturated Soils ◽  
Fold Increase ◽  
Organic Liquids ◽  
Influence Of Temperature ◽  
Volatile Organic ◽  
Influence Of Temperature On

Venting is one of the most used in situ remediation methods for unsaturated soils contaminated with volatile organic compounds (VOC). The development of mathematical models and their validation by means of experimental results allowed the identification of the main parameters which influence the soil depollution process. The influence of temperature on the venting depollution process of soils polluted with volatile organic compounds was studied in this investigation. It was found that the depollution efficiency is strongly influenced by the vapour pressure of the pollutants. The conclusions, derived from the performed experimental determinations allowed characterization of the depollution process by using an "equilibrium" model. This model considers the existence of equilibrium between the four pollution phases (vapour, aqueous, "solid" and non-aqueous phase organic liquids) at any moment in time. In order to calculate the vapour pressure, a modified equation of the Antoine model was used in the model. Application of the mathematical model indicates that a 10 ?C temperature rise leads to a two-fold increase in the vapor pressure of a compound. Comparison of the modeled and experimental curves, as well as the values of the obtained performance critterions, verified that the chosen mathematical model describes the influence of temperature on the depollution process very well. .

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