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Utilization of some starch derivatives in heavy metal ions removal
Author(s) -
Khalil M. I.,
Farag S.
Publication year - 1998
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19980705)69:1<45::aid-app6>3.0.co;2-m
Subject(s) - starch , acrylamide , metal ions in aqueous solution , adsorption , copolymer , metal , chemistry , nuclear chemistry , polymer chemistry , inorganic chemistry , organic chemistry , polymer
Three types of starch derivatives containing amide groups were used in removal of heavy metal ions from their solutions. These starch derivatives were poly(acrylamide)–starch graft copolymer, carbamoylethylated starch, and starch carbamate. The different factors affecting metal ion adsorption on these substrates, such as pH, metal ion concentration, type of starch derivatives, treatment time, and temperature, were studied. Results obtained indicate that the poly(acrylamide)–starch graft copolymer was a selective adsorbant for Hg 2+ at pH 0.5–1. The adsorption values ofdifferent metal ions on these starch derivatives follow the order of Hg 2+ > Cu 2+ > Zn 2+ > Ni 2+ > Co 2+ > Cd 2+ > Pb 2+ . The adsorption values depend upon pH, type of starch derivative, treatment duration, and temperature. The adsorption efficiency percentage of metal ions on the three substrates follows the order of carbamoylethylated starch > poly(acrylamide) − starch graft copolymer > starch carbamate. © 1998 John Wiley & Sons, Inc. J Appl Polm Sci 69: 45–50, 1998