الفهرس 
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Abstract
Water sanctity throughout history where the creation of
every living thing was obtained, but with the progress of
civilization of mankind water pollution has become one of
the negatives of this progress. So scientists have been
working to find out solutions for water purification. The
heavy metals are the most dangerous pollutants facing
organisms because of their toxicity. Various technologies
have been developed to be available for removal of toxic
materials from waste water, thereby preventing the
pollution of surface and ground water.
The current study take care of a solution to the problem o f
environmental pollution and re-plastic waste recycling for
water pollution treatment. Hence a new easily prepared,
low-cost and efficient chelating polymers CPs based on
waste polystyrene plastics (PSt) and
polymethylamethacrylate PMMA functionalized by
itaconic acid (IA) and 2-hydroxyethyl methacrylate
(HEMA) moieties in absence and presence of
montmorillonite clay MMT have been used as potential
adsorbents for removal of toxic heavy metal pollutants
from water system. The adsorption of Cu
2+
ions were found
to be time dependent. Adsorption isotherms have been
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studied in terms of Langmuir, Freundlish and Temkin
isotherms models. The values of correlation coefficients
deduced from the aforementioned three models confirmed
that R1, R3, R4, R5, R6 and R7 are good fitted to Temkin
adsorption model. In the other hand, R2 and R8 follows
Langmuir adsorption. The data of the kinetics of Cu
2+
ions
sorbet from aqueous solutions into the prepared resin at
different times were analyzed using Lagergren`s pseudofirst and pseudo-second order, where the correlation
coefficient values illustrated that the sorption of Cu
+2
ions
by R2, R4, R7 and R8 fit well the pseudo-first order model,
where as the sorption of Cu
+2
ions by R1, R3, R5, and R6
fit well the pseudo-second order model. The selectivity
measurements for different toxic heavy metal ions (Cu, Pb,
Cr, Co, Ni and Cd) have been investigated and it was found
from the adsorption test the adsorbents being evaluated had
the highest adsorption capacities for Cu
2+
ions with most
synthesized CPs where; the sorption capacities of the tested
metal ions on the surface of CPs in the following order for
R1 (Cu ˃Pb ˃Cr ˃ Co ˃ Cd ˃ Ni), for R2 in the order (Cu
˃ Cr ˃ Cd ˃ Pb ˃ Co ˃ Ni), for R3 in the order (Cd ˃Cr ˃
Cu ˃ Co ˃ Pb ˃ Ni), for R4 in the order (Cu ˃ Cd ˃ Co ˃
Cr ˃ Ni ˃ Pb), for R5 in the order (Cd ˃ Cr ˃ Cu ˃ Pb ˃ Ni ˃ Co), for R6 in the order (Cu ˃ Pb ˃ Cr ˃ Co ˃ Ni ˃ Cd),
for R7 in the order (Pb˃ Co ˃Cr ˃Ni ˃Cd ˃Cu) and for R8
in the order (Cd ˃ Ni ˃ Pb ˃ Cr ˃ Cu ˃ Co). The metal
ions uptake increases with increasing pH values due to
complete ionization of the COOH groups occurred at
higher pH values.
Finally, we can conclude that these commercial, easily
prepared CPs have double positive features in which it
helps to get rid of the organic plastic wastes as well as toxic
heavy metal pollutants.