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Aspartate glucan, glycine glucan, and serine glucan for the removal of cobalt and copper from solutions and brines
Author(s) -
Muzzarelli Riccardo A. A.,
Tanfani Fabio,
Emanuelli Monica,
Bolognini Luigi
Publication year - 1985
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260270805
Subject(s) - cobalt , glucan , chemistry , copper , glycine , nuclear chemistry , sulfuric acid , chelation , inorganic chemistry , chromatography , organic chemistry , biochemistry , amino acid
Abstract Aspartate glucan, glycine glucan, and serine glucan obtained by reductive amination of oxalacetic acid, glyoxylic acid, and β‐hydroxypyruvic acid, respectively, with polyglucosamine were tested as chromatographic chelating media. Crosslinked glycine glucan exhibited high capacities for cobalt and copper, even in acidic solutions (pH 2.9). Breakthrough points for 10 mg/L solutions through 6.0 × 0.6 cm columns containing 200 mg of polymer were at 1.8 L for both ions; for 1 mg/L solutions, they were at 4.0 and 12.0 L for cobalt and copper, respectively. Crosslinked glycine glucan could remove microgram amounts of cobalt and copper from fluoride and chloride brines. Cobalt and copper could be separated by elution with 0.25 M sulfuric acid.