Adsorption of methyl violet in aqueous solutions by poly(N-vinylpyrrolidone-co-methacrylic acid) hydrogels

被引：39
|
作者：
Solpan, D [1 ]
Kölge, Z [1 ]
机构：
[1] Hacettepe Univ, Dept Chem, TR-06532 Ankara, Turkey
来源：
RADIATION PHYSICS AND CHEMISTRY | 2006年 / 75卷 / 01期
关键词：
gamma-irradiation; hydrogel; poly(N-vinylpyrrolidone-co-methacrylic acid); adsorption; methyl violet;
D O I：
10.1016/j.radphyschem.2005.06.005
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
N-vinylpyrrolidone(VP)/methacrylic acid (MAA) monomer mixtures containing different quantities of methacrylic acid were irradiated with gamma-radiation to form hydrogels. Mixtures which contain 5, 10, 15% and irradiated with 3.4 kGy were used for swelling and diffusion studies in water and solutions of methyl violet and for the adsorption of methyl violet from aqueous solutions. Diffusion of water and methyl violet within hydrogels were found to be of non-Fickian character. In the dye adsorption experiments, the effects of pH, concentration of aqueous solution of dye and the composition of hydrogels on the adsorption process were investigated. When the pH and concentration of aqueous solutions of dye and the MAA content in hydrogels increased, the adsorption increased. (C) 2005 Elsevier Ltd. All rights reserved.
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页码：120 / 128
页数：9
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