Hybrid Properties of Alginate‐PEI Adsorbent for Chromium (VI) Removal from Aqueous Solutions

References

• James , B. R. 1996 . The challenge of remediating chromium‐contaminated soil . Environ. Sci. Technol. , 30 : 248A – 251A .
   PubMed Web of Science ®Google Scholar
• Erzen , N. K. and Stupar , J. 2003 . Fractionation of chromium in soils treated with aqueous solutions of Cr(VI) and Cr(III) . Acta Chim. Slov. , 50 : 67 – 81 .
   Web of Science ®Google Scholar
• Fukushima , M. , Nakayasu , K. , Tanaka , S. and Nakamura , H. 1997 . Speciation analysis of chromium after reduction of chromium (VI) by humic acid . Toxicol. Environ. Chem. , 62 : 207 – 215 .
   Google Scholar
• Chung , J. B. , Burau , R. G. and Zasoski , R. J. 2001 . Chromate generation by chromate depleted subsurface metarial . Wat. Air Soil Pollut. , 128 : 407 – 417 .
   Web of Science ®Google Scholar
• Gzura , L. and Dhahbi , M. 2001 . Removal of chromate anions by micellar‐enhanced ultrafiltration using cationic surfactants . Desalination. , 137 : 241 – 250 .
   Web of Science ®Google Scholar
• Selomulya , C. , Meeyoo , V. and Amal , R. 1999 . Mechanisms of Cr(VI) removal from water by various types of activated carbon . J. Chem. Technol. Biotechnol. , 74 : 111 – 122 .
   Web of Science ®Google Scholar
• Nakano , Y. , Takeshita , K. and Tsutsumi , T. 2001 . Adsorption mechanisms of hexavalent chromium by redox within condensed tannin gel . Wat. Res. , 35 : 496 – 500 .
   PubMed Web of Science ®Google Scholar
• Rojas , G. , Silva , G. , Flores , J. , Rodriguez , A. , Ly , M. and Maldonedo , H. 2005 . Adsorption of chromium onto crosslinked chitosan . Sep. Purif. Technol. , 44 : 31 – 36 .
   Web of Science ®Google Scholar
• Deshphande , K. , Cheung , S. , Rao , M. and Dave , B. 2005 . Efficient sequestration and reduction of hexavalent with organo‐silica sol‐gels . J. Mater. Chem. , 15 : 2997 – 3004 .
   Web of Science ®Google Scholar
• Jang , L. K. , Nguyen , D. and Geesey , G. 1999a . Equilibrium model for the adsorption of multiple divalent metals by alginate gels under acidic conditions . Wat. Res. , 33 ( 12 ) : 2826 – 2832 .
   Web of Science ®Google Scholar
• Jang , L. K. , Nguyen , D. and Geesey , G. 1999b . Selectivity of alginate gel for Cu over Zn when acidic conditions prevail . Wat. Res. , 33 ( 12 ) : 2817 – 2825 .
   Web of Science ®Google Scholar
• Ibanez , J. P. and Umetsu , Y. 2002 . Potential of protonated alginate beads for heavy metals uptake . Hydrometallurgy. , 64 : 89 – 99 .
   Web of Science ®Google Scholar
• De Groot , A. R. and Newfeld , R. J. 2001 . Encapsulation of urease in alginate beads and protection from a‐chymotrypsin with chitosan membranes . Enz. Microb. Technol. , 29 : 321 – 327 .
   Web of Science ®Google Scholar
• Tanaka , H. M. , Matsumura , M. and Velicky , I. 1984 . Diffusion characteristics of substrates in Ca‐alginate gel beads . Biotechnol. Bioeng. , 26 : 53 – 58 .
   PubMed Web of Science ®Google Scholar
• Pandey , A. K. , Pandey , S. , Misra , V. and Devi , S. 2003 . Role of humic acid entrapped calcium‐alginate beads in removal of heavy metals . J Hazard Mater , 98 : 177 – 181 .
   PubMed Web of Science ®Google Scholar
• ASTM . 1997 . Annual book of ASTM standards D 1687 – 92 . Philadelphia : American Society for Testing and Materials .
   Google Scholar
• Kong , H. J. and Mooney , D. J. 2003 . The effects of polyethyleneimine (PEI) molecular weight on reinforcement of alginate hydrogels . Cell Transplant. , 12 ( 7 ) : 779 – 785 .
   PubMed Web of Science ®Google Scholar
• Nahalka , J. , Wu , B. , Sahao , J. , Gremeiner , P. and Wang , G. 2004 . Production of cystidine 5′‐momophosphono‐N‐acetyl β‐D‐n‐neuramic acid (CMP‐sialic acid) using enzymes or whole cells entrapped in calcium‐pectate‐silica‐gel beads . Biotechnol. Appl. Biochem. , 40 : 101 – 106 .
   PubMed Web of Science ®Google Scholar
• Navarro , R. , Sumi , K. and Matsumura , M. 1998 . Heavy metal sequestration properties of a new amine‐type chelating adsorbent . Wat. Sci. Technol. , 38 ( 4–5 ) : 195 – 201 .
   Web of Science ®Google Scholar
• Navarro , R. , Sumi , K. and Matsumura , M. 1999 . Improved metal affinity of chelating adsorbents through graft polymerization . Wat. Res. , 33 ( 9 ) : 2037 – 2044 .
   Web of Science ®Google Scholar
• Environment Agency Japan . 1973 . Testing Methods for Metals in Industrial Wastes. . Notification No. 13 of the Environment Agency
   Google Scholar