Optimization of polyacrylonitrile-cysteine resin synthesis and its selective removal of Cu(II) in aqueous solutions
Polyacrylonitrile beads (PAN) cysteine (CS) was synthesized from polyacrylonitrile beads (PAN) and cysteine (CS). The content of the functional group and the percentage conversion of the functional group of PAN-CS prepared under the optimum condition using response surface methodology (RSM) for the first attempt were 3.22mmol/g and 35.78%. The structure was characterized by FT-IR and elemental analysis. The adsorption properties of the resin for Cu(II) were investigated by batch and column experiments. Batch adsorption results suggested that PAN-CS had higher adsorption capability for Cu(II) than other metal ions and maximum saturated adsorption capacity was 184.7mg/g. The resin and its metal complexes were studied by FT-IR. Furthermore, the resin can be eluted easily using 1mol/L HCl. PAN-CS can provide a potential application for selective removal of copper from waste solution.
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