Dye-incorporated poly(EGDMA-HEMA) microspheres as specific sorbents for aluminum removal

被引:21
作者
Denizli, A
Salih, B
Kavakli, C
Piskin, E
机构
[1] HACETTEPE UNIV,DIV BIOCHEM,TR-06532 ANKARA,TURKEY
[2] HACETTEPE UNIV,DIV ANALYT CHEM,TR-06532 ANKARA,TURKEY
[3] HACETTEPE UNIV,DEPT CHEM ENGN,TR-06532 ANKARA,TURKEY
[4] HACETTEPE UNIV,BIOENGN DIV,TR-06532 ANKARA,TURKEY
来源
JOURNAL OF CHROMATOGRAPHY B | 1997年 / 698卷 / 1-2期
关键词
aluminum; poly(ethylene glycol dimethacrylate-hydroxyethyl methylacrylate);
D O I
10.1016/S0378-4347(97)00306-X
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Aluminum [Al(III)] adsorption onto dye-incorporated poly(ethylene glycol dimethacrylate-hydroxyethyl methacrylate) [poly(EGDMA-HEMA)] microspheres was investigated. Poly(EGDMA-HEMA) microspheres, in the size range of 150-200 mu m, were produced by a modified suspension polymerization of EGDMA and HEMA. The reactive dyes (i.e., Congo Red, Cibacron Blue F3GA and Alkali Blue 6B) were covalently incorporated to the microspheres. The maximum dye load was 14.5 mu mol Congo Red/g, 16.5 mu mol Cibacron Blue F3GA/g and 23.7 mu mol Alkali Blue 6B/g polymer. The maximum Al(III) adsorption on the dye microspheres from aqueous solutions containing different amounts of Al(III) ions were 27.9 mg/g, 17.3 mg/g and 12.2 mg/g polymer for the Congo Red, Cibacron Blue F3GA and Alkali Blue 6B, respectively. The maximum AI(III) adsorption was observed at pH 7.0 in all cases. Non-specific Al(III) adsorption was about 0.84 mg/g polymer under the same conditions. High desorption ratios (95%) were achieved in all cases by using 0.1 M HNO3. It was possible to reuse these dye-incorporated poly(EGDMA-HEMA) microspheres without significant losses in the Al(III) adsorption capacities. (C) 1997 Elsevier Science B.V.
引用
收藏
页码:89 / 96
页数:8
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