Removal of uranyl ions from wastewaters using cellulose and modified cellulose materials</p> </p>

被引：0
|
作者：
D. Bontea
C. Mita
D. Humelnicu
机构：
[1] Institute of Macromolecular Chemistry,
[2] Al. I. Cuza” University,undefined
[3] Department of Inorganic Chemistry,undefined
[4] Al. I. Cuza” University,undefined
[5] Department of Inorganic Chemistry,undefined
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2006年 / 268卷
关键词：
Cellulose; Wastewater; Thermal Stability; Kinetic Parameter; Thermogravimetry;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Three silylcellulosic derivatives with different substitution degree were examined as sorbents for uranyl ions. The adsorption rate and capacity of cellulose and modified cellulose were investigated in aqueous media, at various pH and temperature values. The polymer - metal complexes of UO22+ were characterized by infrared and electronic spectra, and thermogravimetry. The thermal behavior of cellulose (C), trimethylsilyl - cellulose (tmsc, SD= 2.85) and triphenylsilyl - cellulose (TPSC1, SD=2.89 and TPSC2, SD =2.70) and their complexes with uranyl ions in atmospheric air has been studied between room temperature and 600 °C. The Coats-Redfern method was applied to estimate the kinetic parameters. The results revealed that the complexation of C and TMSC with UO22+ increases the thermal stability.</p> </p>
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页码：305 / 311
页数：6
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