Cygnarowicz and Seider [Biotechnol. Prog., 6, 82-91 (1990)] present a process design for the supercritical extraction of β-carotene from water with carbon dioxide using the GC-EOS method of Skjold-Jorgensen to estimate phase equilibria. Repeat the calculations for the conditions of their design using the Peng-Robinson EOS with the Wong-Sandler mixing rules. How do the two designs compare?