U(VI) adsorption by sodium alginate/graphene oxide composite beads in water

被引：1
|
作者：
Dianxin Li
Peng Zhang
Yiqing Yang
Yuqi Huang
Tao Li
Junwei Yang
机构：
[1] Liupanshui Normal University,School of Mines and Civil Engineering
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2021年 / 327卷
关键词：
Graphene oxide; Adsorption; Sodium alginate; U(VI);
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Graphene oxide was encapsulated into sodium alginate to prepare SA-GO composite hydrogel for U(VI) adsorption, which characterized by SEM, FTIR, and XPS. The effects of pH, reaction time, initial U(VI) concentration and adsorbent amount on U(VI) adsorption were studied by batch adsorption experiments. The results showed that the maximum adsorption capacity was 149.76 mg/L when pH 5.0, adsorbent 0.1 g/L, 30 °C and initial U(VI) concentration 15 mg/L. The adsorption process accords with pseudo-second-order kinetic models and Langmuir isotherm. After five cycles of desorption and reuse experiments, the adsorption capacity of SA-GO for U(VI) was still higher than 85%.
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页码：1131 / 1141
页数：10
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