Premium
Synthesis of a polyacrylamide chelating resin and applications in metal ion extractions
Author(s) -
Latha A. Gomathy,
George Benny K.,
Kannan K. G.,
Ninan K. N.
Publication year - 1991
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.1991.070430616
Subject(s) - adsorption , polyacrylamide , metal ions in aqueous solution , chelation , metal , diamine , valence (chemistry) , acrylamide , ethylene , polymer chemistry , methylene , chemistry , chelating resin , ion , materials science , inorganic chemistry , polymer , catalysis , organic chemistry , copolymer
A series of differently crosslinked polyacrylamide chelating resins were prepared, using N,N′‐methylene‐bis‐acrylamide as the crosslinking agent. The crosslinked resins were functionalized by the reaction with ethylene diamine to get amino group capacities varying from 4.2 to 1.1 mequiv/g. The maximum adsorption capacities of the lightly crosslinked resin for Fe 3+ , Fe 2+ , Ni 2+ , and Cu 2+ are 3.62, 4.22, 1.48, and 1.67 mequiv/g, respectively. The adsorbed metal ions can be quantitatively desorbed. The adsorption rate and the influence of pH on the adsorption of metal ions were examined. The resins can be used for the separation between different metal ions as well as the ions in different valence states (e.g., Fe 3+ and Fe 2+ ). The resin is amenable for continuous process and can be regenerated several times.