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Russian Journal of Applied Chemistry, Vol. 74, No. 2, 2001, pp. 247!252. Translated from Zhurnal Prikladnoi Khimii, Vol. 74, No. 2, 2001,
Original Russian Text Copyright + 2001 by Korobov, Lazarev.
OF CHEMISTRY AND TECHNOLOGY
Diffusion, Osmotic, and Electroosmotic Permeability
of Reverse-Osmosis Membranes
V. B. Korobov and S. I. Lazarev
Tambov State Technical University, Tambov, Russia
Received October 4, 1999; in final form, February 2000
Abstract-The diffusion, osmotic, and electroosmotic permeabilities of MGA-100 and OPM-K mem-
branes in aniline- and morpholine-containing aqueous solutions were studied in the concentration range
0.4312.5 kg m
at 20345oC. The behavior of the permeabilities with solution concentration and tempera-
ture is analyzed and accounted for.
In  were presented results obtained in study-
ing by the methods of reverse osmosis and electro-
osmofiltration the purification of wastewater produced
at plants manufacturing chemicals-additives for poly-
meric materials. As objects of study served aniline-
and morpholine-containing kinds of wastewater (both
model and real) and polymeric reverse-osmosis mem-
branes MGA-100 and OPM-K. It was shown that
the baromembrane methods are promising for waste-
The present communication reports the results ob-
tained in studying the diffusion, osmotic, and elec-
troosmotic permeabilities to aniline and morpholine of
reverse-osmosis membranes MGA-100 and OPM-K.
These data are necessary for analyzing transport
phenomena and performing engineering calculations
of membrane processes .
A schematic of the experimental setup for studying
the diffusion, osmotic, and electroosmotic permeabili-
ties is presented in the figure.
The setup comprises a thermostated cell I3II, mea-
suring capillary 1, vessels for the starting (2, 3) and
spent (4, 5) solutions, and a dc power source 6.
The main unit of the setup is the I3II cell. It con-
sists of two chambers, I and II, separated by a mem-
brane 7 under study.
In analyzing the diffusion and osmotic permeabili-
ties, a membrane is pressed between grids 8 made
of acrylic resin in order to prevent its bending under
the action of hydrostatic pressure and temperature
In studying the electroosmotic permeability, the
membrane is fixed between chambers I and II in an-
other way. A membrane under study is placed on
a piece of Whatman paper, in its turn laid on the po-
Schematic of the experimental setup. For explanations see