Methacryloylamidoglutamic acid functionalized poly(2-hydroxyethyl methacrylate) beads for UO22+ removal

Abstract A novel approach was developed to obtaining high uranium adsorption capacity utilizing 2-methacryloylamidoglutamic acid (MAGA) as a metal-complexing ligand. MAGA was synthesized by using methacryloyl chloride and glutamic acid. Spherical beads with an average size of 150–200 μm were obtained by suspension polymerization of MAGA and 2-hydroxyethyl methacrylate (HEMA) conducted in an aqueous dispersion medium. Poly(2-hydroxyethyl methacrylate–methacryloylamidoglutamic acid) [p(HEMA–MAGA)] beads have a specific surface area of 56.7 m2/g. p(HEMA–MAGA) beads were characterized by swelling studies, FTIR and elemental analysis. The p(HEMA–MAGA) beads with a swelling ratio of 63%, and containing 3.5 mmol MAGA/g were used in the removal of UO22+ from aqueous solutions. Adsorption equilibrium was achieved in about 120 min. The adsorption of uranium(VI) ions onto pHEMA was negligible (1.4 mg/g). The MAGA incorporation significantly increased the uranium adsorption capacity (204.8 mg/g). Adsorption capacity of MAGA incorporated beads increased significantly with pH and then reached the maximum at pH 6.0. Consecutive adsorption and elution operations showed the feasibility of repeated use for p(HEMA–MAGA) chelating beads.

[1]  P. Cloirec,et al.  Uranium biosorption by a filamentous fungus Mucor miehei pH effect on mechanisms and performances of uptake , 1992 .

[2]  D. Acosta,et al.  Uo22+ Sorption in Natural Mexican Erionite and Y zeolite , 1994 .

[3]  N. Kabay.  Preparation of Amidoxime-Fiber Adsorbents Based on Poly(Methacrylonitrile) for Recovery of Uranium from Seawater∗ , 1994 .

[4]  M. Tsezos,et al.  Mechanism of aluminum interference on uranium biosorption by Rhizopus arrhizus. , 1997, Biotechnology and bioengineering.

[5]  A. Denizli,et al.  A Novel Affinity Support Material for the Separation of Immunoglobulin G from Human Plasma , 2002 .

[6]  A. Nakajima,et al.  ACCUMULATION OF URANIUM BY IMMOBILIZED PERSIMMON TANNIN , 1994 .

[7]  N. Alcock,et al.  Carboxylato complexes of the uranyl ion: Effects of ligand size and coordination geometry upon molecular and crystal structure , 1995 .

[8]  Huijun Zhao,et al.  Preparation and characterisation of a poly(acrylamidoglycolic acid-co-acrylamide) hydrogel for selective binding of Cu2+ and application to diffusive gradients in thin films measurements , 2002 .

[9]  T. Caykara,et al.  Radiation synthesis and uranyl-ion adsorption of poly(2-hydroxyethyl methacrylate/maleic acid) hydrogels , 2001 .

[10]  G. Gadd.  Bioremedial potential of microbial mechanisms of metal mobilization and immobilization. , 2000, Current Opinion in Biotechnology.

[11]  T. Nonaka,et al.  Recovery of uranium from seawater. X: Pore structure and uranium adsorption of macroreticular chelating resin containing amidoxime groups , 1992 .

[12]  A. Denizli,et al.  Synthesis and adsorption properties of poly(2-hydroxyethylmethacrylate-co-methacrylamidophenylalanine) membranes for copper ions , 2000 .

[13]  Michael Z. Hu,et al.  Ligand-grafted biomaterials for adsorptive separations of uranium in solution , 1999 .

[14]  Yulin Deng,et al.  Synthesis and characterization of soy-based copolyamides with different α-amino acids , 1999 .

[15]  Manson Benedict,et al.  Nuclear Chemical Engineering , 1981 .

[16]  I. Arvanitoyannis,et al.  Composites of novel biodegradable copolyamides based on adipic acid, 1,6-hexane diamine and -proline with short E-glass fibres: 1. Preparation and properties , 1995 .

[17]  A. Denizli,et al.  HEAVY METAL SEPARATION CAPACITY OF A POROUS METHACRYLAMIDO-PHENYLALANINE CONTAINING MEMBRANE BASED ON A POLYHYDROXY-ETHYL METHACRYLATE MATRIX , 2001 .

[18]  N. Friis,et al.  Biosorption of uranium and lead by Streptomyces longwoodensis , 1986, Biotechnology and bioengineering.

[19]  C. Brierley,et al.  Microbial Mineral Recovery , 1990 .

[20]  S. F. D’souza,et al.  Biosorptive uranium uptake by a Pseudomonas strain: characterization and equilibrium studies , 2001 .

[21]  K. Kusakabe,et al.  Desorption of Uranium from Amidoxime Fiber Adsorbent , 1993 .

[22]  J. Norman,et al.  Biosorption of uranium by Pseudomonas aeruginosa strain CSU: Characterization and comparison studies , 1996, Biotechnology and bioengineering.

[23]  Seong-Ho Choi,et al.  Adsorption of UO2+2 by polyethylene adsorbents with amidoxime, carboxyl, and amidoxime/carboxyl group , 2000 .

[24]  S. Sikdar,et al.  Novel poly-glutamic acid functionalized microfiltration membranes for sorption of heavy metals at high capacity , 1998 .

[25]  M. Chanda,et al.  Chromium(III) removal by poly(ethyleneimine) granular sorbents made by a new process of templated gel filling , 1997 .

[26]  S. Margel,et al.  Poly(N-vinyl α-amino acid) microspheres: a model—poly(N-vinyl α-phenyl alanine) microspheres: synthesis and characterization , 2002 .

[27]  J. Okamoto,et al.  A New Type of Amidoxime-Group-Containing Adsorbent for the Recovery of Uranium from Seawater. II. Effect of Grafting of Hydrophilic Monomers , 1986 .

[28]  A. Denizli,et al.  Synthesis of Poly[(hydroxyethyl methacrylate)-co-(methacrylamidoalanine)] Membranes and Their Utilization as an Affinity Sorbent for Lysozyme Adsorption , 2001 .

[29]  Bohumil Volesky,et al.  Biosorption of uranium and thorium , 1981 .

[30]  Z. Kučerová,et al.  Aromatic amino acids and their derivatives as ligands for the isolation of aspartic proteinases. , 2002, Journal of chromatography. B, Analytical technologies in the biomedical and life sciences.

[31]  Robert Langer,et al.  Copolymerization and Degradation of Poly(lactic acid-co-lysine) , 1995 .