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Table 4 LLE binary interaction parameters of the NRTL and UNIQUAC models for 2,3-butanediol (2,3-BDO), water, and oleyl alcohol (OA)

From: Purification of 2,3-butanediol from fermentation broth: process development and techno-economic analysis

System NRTL UNIQUAC
a ij a ji b ij (K) b ji (K) c ij a ij a ji b ij (K) b ji (K)
2,3-BDO/Water − 0.5863 0.567324 − 107.067 899.029 0.2 7.06203 − 34.0042 − 2388.66 10,000
2,3-BDO/OA − 31.1741 20.1625 9998.51 − 6329.68 0.2 − 1.16437 − 17.0389 2.92684 4985.16
Water-OA − 11.9258 − 28.0351 5808.59 9999.42 0.2 0.967516 − 22.3601 − 225.248 − 7369.56
AAD 0.0186 0.0211