chapter  11
36 Pages

Membrane Processes

ByA.F.P. Ferreira, M.C. Campo, A.M. Mendes, and F. Kapteijn

Challenges ....................................................................................... 416 Acknowledgment ................................................................................................ 417 References ............................................................................................................. 417

Millions of years ago, nature created biological membranes. The most importantfeatureofabio-membraneisthatitisaselectively permeablelayer. Thismeansthatthesize,charge,andotherphysiochemicalpropertiesof theparticles,molecules,atomsorsubstancesattemptingtopermeateitwill determinewhethertheysucceedornot.Thisaptitudemakesthemthemost ef„cient known separation “technology.” Hence, to mimic such concept is themostlogicalpathtofollowwhentryingtointegrateseparationtechnologies.Theavailabletechnologiespresentmajordrawbacks,separationprocesseslikedistillationtendtobeenergydemanding,andprocessesbasedon adsorptionhavetheproblematicfeatureofnotoperateinacontinuousmode.