Title of article :
Supercritical CO2 impregnation of Radiata pine with organic fungicides: Effect of operating conditions and two-parameters modeling
Author/Authors :
Lucas، نويسنده , , S. and Gonzلlez-Carrasco، نويسنده , , E. S. Calvo، نويسنده , , M.P. and Palencia، نويسنده , , C. and Alonso، نويسنده , , E. and Cocero، نويسنده , , M.J.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Pages :
8
From page :
462
To page :
469
Abstract :
Supercritical impregnation of Radiata pine with ethyl acetate and decanal using CO2 as carrier solvent has been studied at pilot plant scale. Radiata pine is one of the most common wood species that is originally from Australia and is widely grown in Spain and Portugal and ethyl acetate and decanal were selected as organic compounds. xperiences were carried out to obtain the optimal operating conditions for the supercritical impregnation process. Experiments were conducted at pressures of 7–15 MPa, temperatures of 35–50 °C and solvent flow rate between 1.5 and 3.5 kg/h. The results of this study have indicated that the treatment gives much better preservative penetration and retention operating with low pressures (7.5 MPa), low temperatures (close to 35 °C) and moderate CO2 flow rate (3.5 kg/h) in the selected operating range. Moreover, a simple mathematical model of two adjustable parameters (external mass transfer coefficient and partition coefficient) has demonstrated to fit the experimental impregnation curves with reasonable accuracy (average absolute deviation, 3–10%).
Keywords :
radiata pine , Supercritical impregnation , Fungicide , MODELING
Journal title :
Journal of Supercritical Fluids
Serial Year :
2007
Journal title :
Journal of Supercritical Fluids
Record number :
1419996
Link To Document :
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