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Evaluation, characterization and analytical application of a new composite material for removing metal ions from wastewater
Yavari, R.; Ahmadi, S. J.; Farkhondehru, F.; Gholipoor, V. & Kamel, L.
Abstract
A new organic/inorganic composite based on
polyacrylonitrile and stannic molybdophosphate (PAN–
SMP) as an adsorbent was synthesized under various
conditions. The physicochemical properties of this material
were specified by elemental analysis, scanning electron
microscopy, infrared spectroscopy and thermogravimetry
studies. The synthesized material was found to be stable in
demineralized water, in dilute acids, under gamma radiation
up to the total radiated of 100 kGy doses and in high
temperature up to 500 C. Ion exchange capacity of the
synthesized composite and its distribution coefficient (Kd)
for several metal ions were determined. The results showed
that PAN–SMP has a great affinity toward some metal ions
such as Tl?, Sr2
?, Ba2?, UO2
2? and La4?. Based on the
determined Kd values, two binary quantitative separations
of metal ions (Cr6? from Cu2? and Pb2? from Cu2?) have
been achieved on columns of this ion exchanger. The
ability of PAN–SMP to decontaminate low-level liquid
waste was also investigated.
Keywords
Composite; Ion exchange; Stannic molybdophosphate; Polyacrylonitrile; Decontamination
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