Dl. Yang et al., HOLLOW-FIBER CONTAINED LIQUID MEMBRANE PERVAPORATION SYSTEM FOR THE REMOVAL OF TOXIC VOLATILE ORGANICS FROM WASTE-WATER, Journal of membrane science, 103(3), 1995, pp. 195-210
A novel configuration of a hollow fiber contained liquid membrane (HFC
LM) pervaporation system was used to separate organic solutes such as
trichloroethylene and toluene from water. In this system the highly se
lective organic liquid membrane is contained in the shell side between
two sets of hollow fibers packed in a shell-and-tube heat exchanger a
rrangement. Wastewater is fed into one set of hollow fibers and vacuum
is applied in the other set of hollow fibers. The separation factors
and solute recoveries for the HFCLM system were higher and water fluxe
s lower than in a conventional pervaporation system based on silicone
rubber with vacuum applied outside the silicone rubber hollow fibers.
The effluent concentration data for the HFCLM were satisfactorily corr
elated with a material balance where the mass flux was expressed in te
rms of an overall mass transfer coefficient based on resistances-in-se
ries model.