Adsorption behavior of Cu²⁺ and UO ions on crosslinked poly[2,2‐bis(acrylamido)acetic acid]

Abstract

SYNOPSISThe synthesis of a water-insoluble metal ion complexing resin was carried out by radical polymerization of 2,2-bis(acrylamido) acetic acid. The resin was characterized by elemental analyses, FTIR spectroscopy, and thermal analyses. The ability to bind copper(II), iron(II), iron(III), and uranium(V1) as well as the elution of the metal ions from the loaded resins were studied. For uranyl ions, pH 5 was the optimum sorption pH value. Sorption selectivity from the binary mixture Cu(I1) + U(V1) was studied at pH 2. The thermal stability is increased by adsorption of TJO;+. According to these results a coordination mechanism is suggested for sorption of copper and uranium. 0 1995 John Wiley & Sons, Inc.

Removal of concentrated heavy metal ions from aqueous solutions using polymers with enriched amidoxime groups

“…An amidoxime density of 2 mmol/g of dry fabric was achieved as reported in detail elsewhere. 26 Metal salts used in the adsorption experiments Cu(NO 3 ) 2 ion concentrations remaining in the solutions were determined by using Philips 8710 UV-Vis spectrophotometer by using sodium salicylate and ammonia as complexing agents for UO 2 2ϩ and Cu 2ϩ ions, respectively. The concentration of Pb 2ϩ ions was determined with an Hitachi AAS.…”

“…A polymeric ligand is used to selectively bind a specific metal ion in a mixture to isolate important metal ions from wastewater and aqueous media. [2][3][4][5] A polymeric ligand is usually used in an insoluble resin form to separate a specific metal ion from a liquid containing a mixture of metal ions. For example, uranium is a potential environmental pollutant, especially in mining industry wastewater, and the migration of uranium in nature is important in this context.…”

Hybridization of aqueous-based polyurethane with glycidyl methacrylate copolymer

“…Its absorption on 1656 and 1589 cm Ϫ1 of the PU carboxylate (CO 2 Ϫ ) carbonyl stretching frequencies increased and the absorption of the carboxylic acid (at 1716 cm Ϫ1 ) decreased 6 (Fig. 2).…”

“…There was no change of the PU infrared spectrum after it was treated with diluted hydrochloric acid. 6,7 The triethylamine was evaporated and the carboxylic acid remained free on the PU film after drying.…”

Studies on poly(8-hydroxy-4-azoquinolinephenylacrylate) and its metal complexes

“…The polymer of vinyl benzoylacetone was prepared from vinyl benzaldehyde and co-polymerized to polymer, which readily forms complexes with Ni(II), Cu(II), Co(II) and Au(II) [10]. The free radical polymerization of Cu(II) complex with Schiff's base ligand containing vinyl group and radical polymerization of methacrylate monomers coordinated to Co(II) have been reported [11].…”