The elaboration of a polymer inclusion membrane (PIM) and solvent
impregnated resin (SIR) XAD7 with sorptive characteristics intended for removal
of heavy metals was investigated. Bis (2,4,4-trimethylpentyl)
monothiophosphinic acid (Cyanex 302) was used as an acidic extractant. The
sorption of Zn(II), Cu(II) and Fe(II) ions onto the PIM and SIR was
investigated and optimized as a function of contact time, pH, extractant amount
and concentration of metal ions. Both the PIM and the SIR showed reasonably
good ability for the separation of metal ions from ternary mixture. The elution
of the metal from the PIM and SIR was accomplished (100% and 90% for PIM and
SIR respectively) with 1.0 M HNO3. The elution treatment allows both
the polymers to be reused.
Cite this paper
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