Efficient adsorption of Th(Ⅳ) from aqueous solution by modified SBA-15 mesoporous silica

被引：3

作者：

Mutlu G?k

?enol Sert

Gül?in ?zevci

Meral Eral

机构：

[1] InstituteofNuclearSciences,EgeUniversity

来源：

Nuclear Science and Techniques | 2018年 / 29卷 / 07期

关键词：

Thorium; SBA-15; Adsorption; TTA; Radionuclide;

D O I：

暂无

中图分类号：

X591 [放射性物质污染及其防治];

学科分类号：

071012 ; 0713 ; 083002 ;

摘要：

A very effective adsorbent for thorium has been obtained by modification of Santa Barbara Amorphous(SBA-15) using the chelating agent thenoyltrifluoroacetone(TTA).The prepared adsorbent(SBA-15-TTA) was characterized using scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FT-IR),surface area,porosity,and zeta potential analyses.We investigated the factors affecting Th(IV) adsorption on TTA-SBA-15,such as initial p H,contact time,temperature,and initial metal concentration.The effective initial p H for adsorption was found to be 4.The binding sites on TTA-SBA-15 adsorbent were saturated using an initial Th(IV) concentration of 100 mg L-1.The Dubinin–Radushkevich isotherm suggested a strong chemical interaction between adsorbent and adsorbate.Contact time and temperature had no significant effect on the adsorption.Therefore,the studies show that TTA-SBA-15 is a promising adsorbent to treat Th(IV)-contaminated effluents.

引用

页码：58 / 66

页数：9

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