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- W1993686528 endingPage "415" @default.
- W1993686528 startingPage "401" @default.
- W1993686528 abstract "The tracer diffusion coefficients are fundamental quantities in simulation and design. Due to the increasing interest upon biorefinery and sustainability in general, green solvents and processes, like carbon dioxide and supercritical fluid extraction, are attracting relevance in both chemistry and chemical engineering research and development. In this work, tracer diffusion coefficients at infinite dilution are focused aiming to propose reliable models for their pure estimation. Four predictive hydrodynamic models were proposed on the basis of modifications introduced in the original expressions of Wilke–Chang, Scheibel, Lusis–Ratcliff, and Tyn–Calus. The modified equations provide reliable results with average absolute errors between 7.86% and 8.56%, and inferior dispersion around the averages. On the contrary, the original correlations taken from the literature achieve errors between 11.89% and 27.25%, along with higher scattering of results. Furthermore, the new expressions offer average errors between 0.47% and 0.53%, while the original ones provide systematic overestimations between 2.95% and 27.23%. In the whole, the new expressions proposed in this work are equally able to predict accurately tracer diffusion coefficients of any solutes in supercritical carbon dioxide." @default.
- W1993686528 created "2016-06-24" @default.
- W1993686528 creator A5012054429 @default.
- W1993686528 creator A5025233891 @default.
- W1993686528 creator A5034215437 @default.
- W1993686528 date "2013-12-01" @default.
- W1993686528 modified "2023-10-13" @default.
- W1993686528 title "Improved hydrodynamic equations for the accurate prediction of diffusivities in supercritical carbon dioxide" @default.
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