Synthesis and Characterization of Poly (1,4-Benzenedimethylene Phthalate) and the Study of its ability to sorb Pb(II), Cd(II), and Zn(II) ions (AOICS) - Lupine Publishers
Poly (1,4-benzenedimethylene phthalate) was synthesized by condensation
of phthaloyl chloride with 1,4-benzenedimethanol in the presence of
pyridine in dry THF at 30 °C . The resulting polymer white powder was
characterized by viscosity measurement, FT-IR, 1H and 13C NMR, elemental
analysis, thermal (TGA-DSC) methods and scanning electron microscopy.
The uptake properties of Pb(II), Zn(II) and Cd(II) metals by the polymer
from aqueous solutions were studied by the batch and column techniques
as a function of pH, temperature, concentration and contact time. The
uptake increased with increasing pH reaching a maximum at pH = 6.00 for
all ions. The polymer showed high uptake capacities toward Pb(II) and
Zn(II) ions, but medium uptake capacity toward Cd (II). The linearized
forms of Langmuir, Freundlich and Dubinin-Radushkevich adsorption
isotherms indicate studied ions Pb(II), Zn(II), and Cd(II). The
adsorption capacity follow the order: Pb(II) > Zn(II) > Cd(II).
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