الفهرس 
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Abstract
Different types of chelating resins were synthesized and used in the
removal of heavy metal ions from solutions using batch and column
methods. Chelating resins based on crosslinked polyacrylamide were
prepared by suspension polymerization of acrylamide and N,N~
methylenebisacrylamide (NNMBA). It was converted to polyvinylamine
chelating resins (PVAMI& PVAM2) by Hofmann degradation reaction
using sodium hypochlorite and sodium hydroxide. Also, the chelating resins
of polyesterurethanes (PEU& CPEU) and polyestenirethaneureas (PEUU&
CPEUU) based on I ,3- di (carboxymethoxy ) benzen were prepared. The
chemical structures of these chelating resins were confirmed from infrared
spectra.
The different factors affecting the metal ions adsorption of these
chelating resins such as pH, concentration of metal ions, treatment time,
amine value, crosslinking and type of chelating resins were studied.
2+ 7± 2+ 2+ 7± 7± 7+
- iferent metal ions (Hg , Cd , Pb , Cu , Zn , Mn~ , Co , and
Ni2~ ) were adsorbed on these chelating resins at different pH values ,the
data obtained showed that. Generally, the adsorption of metal ions increases
with increasing pH. The optimum pH values for adsorption of different
metal ions occur in the range 5.0 — 6.8 depending on the metal ion used. The
sorption capacity was found between 0.3 and 2.7 mmoi/g resin at initial
concentration of (0.005 M) and optimum .