TY - JOUR
T1 - Liquid-liquid extraction systems of benzoic acid in water, heptane, methylbenzene or trichloroethylene as co-solvent
AU - Visscher, F.
AU - Gaakeer, W.A.
AU - Granados Mendoza, P.
AU - Croon, de, M.H.J.M.
AU - Schaaf, van der, J.
AU - Schouten, J.C.
PY - 2011
Y1 - 2011
N2 - Equilibrium data at (293 ± 2) K are presented for benzoic acid in water and three different organic phases (heptane, methylbenzene, and trichloroethylene). The monomeric partition constant, KPMON, and the dimerization constant, KD, for the organic phase were determined at 293 K. For the heptane/water benzoic acid system, KPMON equals (0.209 ± 0.049) m3AQ·m–3ORG, and KD equals (1.33 ± 0.68) m3·mol–1. For the methylbenzene/water benzoic acid system, KPMON equals (1.17 ± 0.92) m3AQ·m–3ORG, and KD equals (0.39 ± 0.64) m3·mol–1. For the trichloroethylene/water benzoic acid system, KPMON equals (0.808 ± 0.295) m3AQ·m–3ORG, and KD equals (1.18 ± 0.89) m3·mol–1. Equilibrium constants were obtained from UV–vis spectroscopy and conductivity experiments. The equilibrium data of these extraction systems can be used to quantify liquid–liquid mass transfer rates with extraction systems that require low flammability risk (trichloroethylene), low costs (methylbenzene), or setups constructed from polymethyl methacrylate (heptane).
AB - Equilibrium data at (293 ± 2) K are presented for benzoic acid in water and three different organic phases (heptane, methylbenzene, and trichloroethylene). The monomeric partition constant, KPMON, and the dimerization constant, KD, for the organic phase were determined at 293 K. For the heptane/water benzoic acid system, KPMON equals (0.209 ± 0.049) m3AQ·m–3ORG, and KD equals (1.33 ± 0.68) m3·mol–1. For the methylbenzene/water benzoic acid system, KPMON equals (1.17 ± 0.92) m3AQ·m–3ORG, and KD equals (0.39 ± 0.64) m3·mol–1. For the trichloroethylene/water benzoic acid system, KPMON equals (0.808 ± 0.295) m3AQ·m–3ORG, and KD equals (1.18 ± 0.89) m3·mol–1. Equilibrium constants were obtained from UV–vis spectroscopy and conductivity experiments. The equilibrium data of these extraction systems can be used to quantify liquid–liquid mass transfer rates with extraction systems that require low flammability risk (trichloroethylene), low costs (methylbenzene), or setups constructed from polymethyl methacrylate (heptane).
U2 - 10.1021/je200478p
DO - 10.1021/je200478p
M3 - Article
VL - 56
SP - 3630
EP - 3636
JO - Journal of Chemical and Engineering Data
JF - Journal of Chemical and Engineering Data
SN - 0021-9568
IS - 9
ER -