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Crude and modified corncobs as complexing agents for water decontamination
Author(s) -
Clave E.,
François J.,
Billon L.,
Sèbe G.,
Jéso B. De,
Guimon M. F.
Publication year - 2003
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/app.13179
Subject(s) - maleic anhydride , succinic anhydride , chemistry , adsorption , fourier transform infrared spectroscopy , copper , chemical modification , nuclear chemistry , human decontamination , x ray photoelectron spectroscopy , succinic acid , polymer chemistry , organic chemistry , chemical engineering , waste management , copolymer , polymer , engineering
The ability of corncobs to retain copper ions was studied with respect to the origin of the materials (inner or outer parts of the cobs), the granulometry, the pH, and chemical modifications with maleic anhydride (MA) and succinic anhydride (SA). Esterification, characterized by Fourier transform infrared and X‐ray photoelectron spectroscopy, led to a large increase in copper retention in comparison with unmodified corncobs. The retention capacity was improved up to 6 times with SA‐modified corncobs at pH 5. The adsorption behavior of MA‐ and SA‐grafted samples, with respect to copper, appeared to be different at pH 4 and pH 5, and this was attributed to a difference in the p K a values of the grafted carboxylic functions. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 820–826, 2004