“…Non ideal mixtures separation overall performance heavily relies on the choice of a suitable entrainer E. This issue has been frequently considered for a non ideal binary mixture A-B separation under continuous operation (Berg, 1969;Doherty and Caldarola, 1985;Laroche et al, 1991Laroche et al, , 1992Pöllmann and Blass, 1994;Perry et al, 1997) or under batch operation (Lang et al, 1994;Safrit et al, 1995;Lelkes, 1998;Rodriguez-Donis et al, 2001a,b, 2003aSkouras et al, 2005;Gerbaud et al, 2006;Kotai et al, 2007). Apart from being market available, inexpensive, stable, non toxic, non-flammable or non corrosive, the most awaited feature of the entrainer E is selectivity, through preferential interaction with either A or B.…”