For
separating the special phenolic compound 2,6-xylenol from the
model coal tar, the liquid–liquid equilibrium data regarding
the four mixtures (toluene + 2,6-xylenol + glycerol/ethylene glycol/1,4-butanediol/1,3-propanediol)
were measured at 303.15 K under pressure 0.1 MPa. The separation performance
of the selected solvents was assessed by distribution coefficient
(D) and separation factor (S). The
experimental and calculated results showed that glycerol and ethylene
glycol were suitable solvents. Meanwhile, the reliability of the measured
data was checked by the Hand and Othmer–Tobias methods. In
addition, the NRTL and UNIQUAC thermodynamic models were adopted to
correlate the experimental data with the calculated values of root-mean-square
deviation (RMSD) and absolute average relative deviation (AARD) lower
than 0.01. The consistency of the regressed binary interaction parameters
was verified using a tool GUI-MATLAB.
Liquid–liquid
equilibrium (LLE) data for the ternary mixture
of water + 2,2,3,3-tetrafluoro-1-propanol (TFP) + {1-pentanol or 2-ethyl-1-hexanol
or n-propyl acetate or dichloromethane} was measured
in 101.3 KPa and 303.2 K. The distribution coefficient and separation
factor appraised utility for extracting TFP from water. The experimental
LLE data were related by the nonrandom two liquid and universal quasichemical
models for which the absolute average deviation and root means square
deviation were no more than 0.0029 and 0.0035, respectively.
The liquid–liquid equilibrium (LLE) data of ternary
systems n-hexane + 1-hexene + solvents (furfural and N,N-dimethylformamide)
were determined experimentally at 298.2, 308.2, and 318.2 K under
101.3 kPa. The solvents’ extraction capacity was assessed by
the solute distribution coefficient and selectivity. Othmer-Tobias
and Hand equations were used to correlate the measured data to test
the correlation of the experimental data, which the linear correlation
is (R
2) ≥ 0.99. Experimental LLE
data was correlated utilizing the NRTL and UNIQUAC thermodynamic models
with all of the RMSD and AARD values below 0.01 meaning that each
ternary system satisfactory agreement at temperatures studied and
the NRTL model gives a better agreement than the UNIQUAC model for
ternary systems.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.