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Concentration and separation of aqueous solutions of Cu 2+ , Ni 2+ , Fe 3+ by dextran
Author(s) -
Şolpan D.,
Şahan M.
Publication year - 1995
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1995.070550301
Subject(s) - aqueous solution , membrane , metal , metal ions in aqueous solution , chemistry , ultrafiltration (renal) , polymer , ion , inorganic chemistry , dextran , hydrolysis , chromatography , organic chemistry , biochemistry
The effects of water‐soluble polymers on the concentration and separation of the aqueous solutions of the metal ions have been studied. The separation of metal ions can be possible by ultrafiltration‐complexation process. The effect of Dextran, which is a water‐soluble polymer, on the concentration and separation of metal ions (Cu 2+ , Ni 2+ , Fe 3+ ) have been investigated by using EC‐PEG 4000 alloy membranes. The permeability of these membranes for metal ions has been rrecorded at constant pressure but different pH values. It has been notices that the highest water‐permeable membrane is also permeable towards Cu 2+ and Ni 2+ , but has shown a considerable retention for Fe 3+ as a result of the hydrolysis of Fe 3+ . The retentions of metallic ions and metallic‐ion‐Dextran couples have been determined at constant pressure but different pH and polymer concentration values. It has been shown that Fe 3+ /Ni 2+ and Fe 3+ /Cu 2+ couples can be separated by using Dextran. © 1995 John Wiley & Sons, Inc.