Radiation synthesis of copolymers for adsorption of dyes from their industrial wastes

Copolymer hydrogels were prepared by γ‐radiation copolymerization of N‐vinyl‐2‐pyrrolidone (NVP) and methylmethacrylate (MMA) or acrylonitrile (AN). The effect of NVP/MMA and NVP/AN compositions and irradiation dose on the gel fraction yield in the prepared hydrogels was determined. It was found tha...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science 2005-05, Vol.96 (3), p.753-763
Main Authors: Abd El-Aal, Samia E., Hegazy, El-Sayed A., AbuTaleb, M. F., Dessouki, A. M.
Format: Article
Language:English
Subjects:
adsorption
Applied sciences
copolymerization
dyes/pigments
Exact sciences and technology
Industrial wastewaters
Organic polymers
Physicochemistry of polymers
Pollution
Properties and characterization
radiation
Solution and gel properties
waste
Wastewaters
Water treatment and pollution
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Copolymer hydrogels were prepared by γ‐radiation copolymerization of N‐vinyl‐2‐pyrrolidone (NVP) and methylmethacrylate (MMA) or acrylonitrile (AN). The effect of NVP/MMA and NVP/AN compositions and irradiation dose on the gel fraction yield in the prepared hydrogels was determined. It was found that as the content of NVP increased, the gel fraction yield decreased. The increase in irradiation dose resulted in increasing the crosslinked network structure and, consequently, the gel percentage increased. The thermal stability and swelling properties were also investigated as a function of comonomer composition. The nitrile groups (–CN) in the prepared copolymer were converted into their respective amidoxime groups by treating with NH2OH‐hydrochloride. Such a process resulted in improving both the swelling behavior and adsorption capacity. Characterization and some selected properties of the prepared hydrogels were studied and accordingly the possibility of its practicable use in the treatment of industrial waste dyes was determined. The thermodynamic parameters for the adsorption process were calculated. The effect of treatment time, pH of feed solution, effect of initial feed concentration, and temperature on the dye uptake was also investigated. The maximum uptake for investigated dyes was higher for treated NVP/AN hydrogel than that for untreated NVP/AN and NVP/MMA ones. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 96: 753–763, 2005
ISSN:0021-8995
1097-4628
DOI:10.1002/app.21514