Thesis-2006-Prokopovich.pdf (3.29 MB)
Download fileUltrafiltration of inorganic salts in the presence of polyelectrolytes
thesis
posted on 2018-11-20, 10:25 authored by Polina ProkopovichIn the present study ultrafiltration (UF) of inorganic salts in the presence of a
polyelectrolyte in the feed solution was investigated. Cellulose acetate membranes
completely impermeable to the polyelectrolyte were selected with pore size 5–20 nm. At
low concentrations of polyelectrolyte, a gel layer on the membrane surface does not
form. At such low polyelectrolyte concentrations the concentration of inorganic salt in
the permeate stream can be higher than in the feed solution. This salt concentration
effect is the reverse of what is obtained with conventional membrane processes; where
the permeate salt concentration is lower, or equal, to the salt concentration in the feed
solution. It is shown that when ultra-filtering inorganic salts in the presence of a
polyelectrolyte, the ratio of salt concentration in the permeate to feed is improved when
the initial salt concentration in the feed solution is low. [Continues.]
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School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering