|
A. V. Ivanov, N. Yu. Smirnova, M. S. Vakshtein, I. A. Chernyshev
Compexing
properties of the cation-exchangers with grafted carboxylic moieties
Abstract
The
complexing properties of the carboxylic sorbents such as CM-52, Olvagel-COOH, MacroPrep
50 CM and hyper cross-linked polysterene MN towards Cu2+, Co2+,
Ni2+, Cd2+, Zn2+, Mn2+ and Pb2+
were systematically studied. The optimal conditions for sorption of the metal
ions from solutions were determined; the pH influence on the metal ions
recovery was studied. The maximum recovery of the ions from the solutions is
reached at pH higher than 5-6, but at pH lower than 2 the ions are
quantitatively desorbed. The sorbent Olvagel-COOH is the most selective towards the
studied ions.
Copyright (C) Chemistry Dept., Moscow State University, 2002
|
|
