REMOVAL OF SOME CHROMIUM CONTAMINANTS FROM AQUEOUS SOLUTIONS USING PANI-ALGINATE GEL BEADS

被引：0
作者：
Olaru, Andreea [2 ,3 ]
Stanculescu, Ioana [1 ]
Cinteza, Ludmila Otilia [1 ,4 ]
Weisssieker, Horst [5 ]
Schaff, Peter [5 ]
机构：
[1] Univ Bucharest, Fac Chem, Dept Phys Chem, Bucharest 030018, Romania
[2] Int Ctr Biodynam, Bucharest 060101, Romania
[3] Univ Bucharest, Fac Chem, Dept Analyt Chem, Bucharest 050663, Romania
[4] Ctr Res & Management Surface Chem & Adv Mat CHEMA, Bucharest, Romania
[5] TUV SUD Business Field PEOPLE, D-80339 Munich, Germany
来源：
FRESENIUS ENVIRONMENTAL BULLETIN | 2009年 / 18卷 / 10期
关键词：
removal; chromium contaminant; alginate beads; polyaniline-alginate hybrid materials; HEXAVALENT CHROMIUM; CONDUCTING POLYMER; ADSORPTION; POLYANILINE; COMPOSITES; SORPTION; CALCIUM; DIFFUSION; ION;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The paper presents a comprehensive study on the removal efficiency for different concentrations of Cr(VI) aqueous solutions, using alginate gel beads with and without polyaniline constituent. Synthesized polyaniline was entrapped in calcium alginate particles and further characterized with optical/spectroscopic techniques. The influences of contact time, pH, adsorbent type and initial chromium concentration on the adsorption process have been investigated. In good agreement with similar studies, the mixed sorbent with polymeric composition (PANI-Alg) showed a good efficiency for hexa-valent Cr removal from aqueous solution under acidic conditions (pH 2). Modeling of experimental data was achieved using Langmuir and Freundlich equations. Our study suggests that the proposed material (polyaniline-alginate beads) could be used for the removal of Cr from contaminated waters, through a cost-effective and environmentally friendly process.
引用
收藏
页码：1851 / 1859
页数：9
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