Process in which diffusion
of a component occurs from a less
concentrated stream to a more concentrated permeable stream.
PAC, 1996, 68, 1479
(Terminology for membranes and membrane processes (IUPAC Recommendations 1996))
on page 1486
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook