Transport properties and fouling issues of membranes utilized for the concentration of dairy products by air-gap membrane distillation and microfiltration

摘要: The work contains results related to the application of membrane separation processes (i.e., distillation and microfiltration) in dairy products processing. performance titania ceramic membranes (pristine as well hydrophobized) was studied microfiltration process whey lactose solutions. On other hand, polymeric porous hydrophobic membranes, (polypropylene—PP polytetrafluoroethylene—PTFE) were tested air-gap (AGMD) contact with extended material physiochemical characterization (including fouling issues) materials before after performed. Transport solution across characterized by higher effectiveness comparing solution. Lactose played an important role reduced interactions material. possessed lower adhesion ability than what influenced reduction permeate flux. Membrane found be a that generates high-quality water retention > 99% while simultaneously concentrating or Microfiltration rejection range 80–90% for pristine hydrophobized one, respectively. tendency case AGMD associated contribution polar part (29%) surface free energy SFE PTFE membrane. lowest value normalized flux decline observed PP membrane, correlated smallest interaction SFE, roughness (RSM), angle (CA), hysteresis (HCA), determined its utilization process.