Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Solubility of high-value compounds in ethyl lactate
T2 - measurements and modelling
AU - Manic, Marina S.
AU - Villanueva, David
AU - Fornari, Tiziana
AU - Queimada, Antonio J.
AU - Macedo, Eugenia A.
AU - Najdanovic, Vesna
PY - 2012/5
Y1 - 2012/5
N2 - (Solid + liquid) equilibria of binary mixtures containing high-value compounds and ethyl lactate were studied. Using the gravimetric method, the solubility of various solutes such as caffeine, vanillic acid, ferulic acid, caffeic acid and thymol in ethyl lactate was measured as a function of temperature over the range of (298.2 to 343.2) K, at atmospheric pressure. The differences in solubility of a given solute in water-saturated and dry ethyl lactate were observed. The deviation of these binary systems from ideal mixture behaviour was discussed. In order to understand the solubilization process, melting properties of pure solutes were determined by differential scanning calorimetry (DSC). The solubility data obtained were represented using UNIQUAC and UNIFAC-based models as well as with the Cubic-Plus-Association (CPA) equation of state. The results of the modeling indicate that these models are the appropriate tools for representing the solubility behaviour of various solutes in ethyl lactate. (C) 2011 Elsevier Ltd. All rights reserved.
AB - (Solid + liquid) equilibria of binary mixtures containing high-value compounds and ethyl lactate were studied. Using the gravimetric method, the solubility of various solutes such as caffeine, vanillic acid, ferulic acid, caffeic acid and thymol in ethyl lactate was measured as a function of temperature over the range of (298.2 to 343.2) K, at atmospheric pressure. The differences in solubility of a given solute in water-saturated and dry ethyl lactate were observed. The deviation of these binary systems from ideal mixture behaviour was discussed. In order to understand the solubilization process, melting properties of pure solutes were determined by differential scanning calorimetry (DSC). The solubility data obtained were represented using UNIQUAC and UNIFAC-based models as well as with the Cubic-Plus-Association (CPA) equation of state. The results of the modeling indicate that these models are the appropriate tools for representing the solubility behaviour of various solutes in ethyl lactate. (C) 2011 Elsevier Ltd. All rights reserved.
KW - FERULIC ACID
KW - EQUATION-OF-STATE
KW - UNIFAC
KW - Solubility
KW - UNIQUAC
KW - EXTRACTION
KW - Cubic-Plus-Association equation of state
KW - PHASE-BEHAVIOR
KW - HEAT-CAPACITY
KW - OLIVE OIL
KW - ORGANIC-COMPOUNDS
KW - Green solvents
KW - VANILLIC ACID
KW - High-value solutes
KW - IONIC LIQUIDS
KW - PHENOLIC-COMPOUNDS
U2 - 10.1016/j.jct.2011.12.005
DO - 10.1016/j.jct.2011.12.005
M3 - Journal article
VL - 48
SP - 93
EP - 100
JO - Journal of Chemical Thermodynamics
JF - Journal of Chemical Thermodynamics
SN - 0021-9614
ER -