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Removal of Heavy Metal Ions by a Chelating Resin Containing Glycine as Chelating Groups by Chuh-Yean Chen; Chen-Li Chiang; Chuh-Rou Chen is a Engineering article available to read on EtoBox.

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A porous chelating resin, crosslinked poly(glycidyl methacrylate-glycine) (PGLY), was synthesized through an epoxy group reaction of crosslinked poly(glycidyl methacrylate) with glycine for the removal of Cu(II), Ni(II) and Cd(II) from aqueous solutions. The interaction between a metal ion and chelating groups within PGLY was examined using FT-IR analysis. In single-metal ion solutions, all the adsorptions tended toward equilibrium at 40 min and the equilibrium adsorption capacities of PGLY were 1.22, 1.07 and 0.96 mmol/g for Cu(II), Ni(II) and Cd(II), respectively. Except pH > 4.0, as pH of the solution decreased the adsorption capacity of each metal ion decreased. After 15 cycles of adsorption-desorption operations, the re-adsorption capacities could attain 86-93% of initial values of uptake. When the pH of the mixture solutions were 2 or 2.5, the competitive adsorption tests confirmed this resin had good adsorption selectivity for the recovery of Cu(II) from Cu(II)/Ni(II) or Cu(II)/Cd(II) mixture.

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Author

Chuh-Yean Chen; Chen-Li Chiang; Chuh-Rou Chen

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 1383-5866)

Published

2007

Language

EN

Field

Engineering (Physical Sciences)