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Preparation and characterization of a phosphonylated polypropylene ion exchanger
Author(s) -
Bouknight J. M.,
DePalma P. A.,
Cobb G. P.,
Shalaby S. W.
Publication year - 2000
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(20000404)76:1<93::aid-app12>3.0.co;2-f
Subject(s) - polypropylene , ion exchange , chemistry , nuclear chemistry , hydrolysis , metal ions in aqueous solution , sulfur , europium , metal , materials science , polymer chemistry , ion , organic chemistry
Because typical ion exchange resins used for treating wastewater contain sulfur binding sites and suffer from application limitations, a new ion exchange system was developed by phosphonylating nonwoven polypropylene fabric (PP). These fabrics were phosphonylated for 0.5, 1, 2, and 4 h; amount of phosphorus on phosphonylated PP increased with an increase in phosphonylation time. After hydrolysis, the appropriate phosphonylated sample was placed in a glass column where a europium (Eu 3+ ), lead (Pb 2+ ), or mercury (Hg 2+ ) salt solution was passed through the fabrics after an equilibration period of 5 min. Filtrate samples were then analyzed by atomic absorption spectroscopy for metal concentration. Results showed that metal binding efficiency for Eu 3+ increased with an increase in phosphonylation time; Pb 2+ binding efficiency increased up to 2 h phosphonylation time and then decreased; Hg 2+ binding efficiency was practically independent of phosphonylation time. PP fabrics were also sulfonated and tested for binding efficiency to determine if phosphorus was a better binding site than sulfur. By comparing the results from phosphonylated PP and sulfonated PP, data showed that phosphonylated PP bound metal ions at a higher efficiency than sulfonated PP. Also, phosphonylated PP had higher binding efficiencies with Eu 3+ and Pb 2+ than a commercial exchange resin. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 76: 93–100, 2000