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Aqueous and organic phases in equilibrium are important in natural and industrial processes and their properties may determine the performance of several products. Common examples of their importance are oil spills in sea or fresh waters. Detergents, paints, coatings, agrochemicals, and cosmetics are examples of products where phase equilibria and interfacial tension may determine their performance. Industrial processes such as liquid-liquid extraction and emulsification are determined by the correct knowledge of the properties of these systems. Although a considerable amount of research papers
may be found dealing with the aqueous-organic phase equilibrium, only a few
results have been published about the interfacial properties of these systems
and only a reduced number of authors have dedicated their attention to both
the distribution of components among the equilibrium phases and the
interfacial properties of these heterogeneous systems. The research work that we are carrying out aims at
improving the knowledge of these systems by measuring properties such as
interfacial tensions, density and compositions of phases at equilibrium and
their modelling based on the principles of Applied Thermodynamics. With this work we hope to add enough knowledge such
that it shall be possible to understand, and especially quantify the
distribution, separation, fate and the eventual recovery of organic mixtures
in equilibrium with aqueous systems. |
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..2005 © PATh |
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