Angelo Basile, a Chemical Engineer with Ph.D. in Technical Physics, is author of hundreds of papers, books, chapter-books, and Special Issues in the field of Membrane Science and Technology, with also various Italian, European and worldwide patents. He is an Associate Editor of various int. journals (IJHE, APCEJ, etc), Editor-in-Chief of the Int. J. Membrane Sci. & Techn., and member of the Editorial Board of more 25 int. journals. Today Basile is working at General TAG, Via Mastri Ligornettesi n. 28, Ligornetto 6853 – Switzerland. Evangelos P. Favvas is a Senior Researcher at the Institute of Nanoscience and Nanotechnology in NCSR “Demokritos, Athens - Greece. He has 80 scientific papers in peer-reviewed journals and 100 articles in international congresses; editor of 2 scientific books, 2 Greek and 4 worldwide patents. His research interests embrace the experimental study of gas separation, with emphasis on carbon dioxide and hydrogen separations, using membranes, sorbents and hybrid porous materials. The in-situ study of condensation process using the combination of X-ray and neutron scattering and adsorption techniques is another filed of his interests.