Control of optical transport parameters of 'porous medium – supercritical fluid' systems

2015 ◽  
Vol 45 (11) ◽  
pp. 1069-1074
Author(s):  
D A Zimnyakov ◽  
O V Ushakova ◽  
S A Yuvchenko ◽  
V N Bagratashvili
Keyword(s):  
Porous Medium ◽  
Supercritical Fluid ◽  
Transport Parameters ◽  
Fluid Systems ◽  
Optical Transport

Stability Analysis of a Supercritical Fluid in a Porous Medium Heated from Below

2016 ◽  
Author(s):  
Leonardo Santos de Brito Alves ◽  
Leandro Santos de Barros ◽  
Heitor Herculano de Barros
Keyword(s):  
Porous Medium ◽  
Stability Analysis ◽  
Supercritical Fluid

scholarly journals Temperature effect in potassium and nitrate ions in soil transport

2008 ◽  
Vol 28 (3) ◽  
pp. 438-447 ◽  
Author(s):  
Adriano D. M. A. Gonçalves ◽  
Jarbas H. Miranda ◽  
Paulo Rossi ◽  
José F. G. Sabadin ◽  
Marcos Y. Kamogawa
Keyword(s):  
Porous Medium ◽  
Dispersion Coefficient ◽  
Potassium Nitrate ◽  
Positive Influence ◽  
Retardation Factor ◽  
Nitrate Transport ◽  
Transport Parameters ◽  
Medium Temperature ◽  
Soil Transport ◽  
Solute Dynamics

When doing researches on solute dynamics in porous medium, the knowledge of medium characteristics and percolating liquids, as well as of external factors is very important. An important external factor is temperature and, in this sense, our purpose was determining potassium and nitrate transport parameters for different values of temperature, in miscible displacement experiments. Evaluated parameters were retardation factor (R), diffusion/dispersion coefficient (D) and dispersivity, at ambient temperature (25 up to 28 ºC), 40 ºC and 50 ºC. Salts used were potassium nitrate and potassium chlorate, prepared in a solution made up of 5 ppm nitrate and 2.000 ppm potassium, with Red-Yellow Latosol porous medium. Temperature exhibited a positive influence upon porous medium solution and upon dispersion coefficient.

Molecular thermodynamics of solute-polymer-supercritical fluid systems

AIChE Journal ◽  
1991 ◽  
Vol 37 (4) ◽  
pp. 607-616 ◽  
Author(s):  
Jae-Jin Shim ◽  
Keith P. Johnston
Keyword(s):  
Supercritical Fluid ◽  
Molecular Thermodynamics ◽  
Fluid Systems
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