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Detection of Microscale Mass‐Transport Regimes in Supercritical Fluid Extraction
Author(s) -
Salamatin Arthur A.
Publication year - 2017
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201600599
Subject(s) - microscale chemistry , supercritical fluid , mass transfer , extraction (chemistry) , limiting , particle (ecology) , supercritical fluid extraction , mechanics , chemistry , materials science , statistical physics , chromatography , thermodynamics , biological system , physics , engineering , mathematics , mechanical engineering , mathematics education , oceanography , biology , geology
The problem of detecting supercritical fluid extraction regimes on the particle‐scale level is discussed by using a generalized multiparameter model, which includes the shrinking‐core (SC) and broken‐and‐intact‐cells (BIC) approaches as its limiting cases. The model accounts for two internal mass‐transfer resistances attributed to cell membranes and transport channels. A wide spectrum of particle‐scale extraction regimes, described by the model, agree with available up‐to‐date relatively short laboratory experiments. Simplified concepts (like SC or BIC) could only be used for available experimental data correlation, and do not allow a reliable extension to long process times. The experimental methodology was suggested to detect limiting internal mass‐transfer mechanisms.