短孔道介孔二氧化硅SBA-15对铀的吸附性能

王兴慧; 朱桂茹; 高从堦

doi:10.3969/j.issn.0438-1157.2013.07.024

您当前的位置：

首页 >

文章列表页 >

短孔道介孔二氧化硅SBA-15对铀的吸附性能

分离工程 | 更新时间：2025-12-10

- 短孔道介孔二氧化硅SBA-15对铀的吸附性能
- Adsorption of uranium (Ⅵ)on silica mesoporous material SBA-15 with short channels
- 化工学报 2013年第7期页码：2480-2487
- 作者机构：
  
  1. 中国海洋大学化学化工学院,山东,青岛,266100
  2. 中国海洋大学海洋化学理论与工程技术教育部重点实验室,山东,青岛,266100
- 作者简介：
  
  王兴慧(1988- ),女,硕士研究生.
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.07.024
  中图分类号： 647.3
- 网络首发：2013-07-05，
  
  纸质出版：2013-07-05
- 稿件说明：
移动端阅览
王兴慧, 朱桂茹, 高从堦. 短孔道介孔二氧化硅SBA-15对铀的吸附性能[J]. 化工学报, 2013,(7):2480-2487.

WANG Xinghui, ZHU Guiru, GAO Congjie. Adsorption of uranium (Ⅵ)on silica mesoporous material SBA-15 with short channels[J]. CIESC Journal, 2013, (7): 2480-2487.
王兴慧, 朱桂茹, 高从堦. 短孔道介孔二氧化硅SBA-15对铀的吸附性能[J]. 化工学报, 2013,(7):2480-2487. DOI： 10.3969/j.issn.0438-1157.2013.07.024.

WANG Xinghui, ZHU Guiru, GAO Congjie. Adsorption of uranium (Ⅵ)on silica mesoporous material SBA-15 with short channels[J]. CIESC Journal, 2013, (7): 2480-2487. DOI： 10.3969/j.issn.0438-1157.2013.07.024.

摘要

以短孔道介孔二氧化硅SBA-15为铀吸附剂

考察吸附时间、初始液pH、初始浓度对吸附性能的影响

并分析了吸附动力学和吸附等温线以及吸附前后红外光谱变化。结果表明

初始液pH对吸附具有重要的影响

最佳吸附的pH值为6; 吸附在30 min即可达到平衡; 当初始浓度为100 mg·L-1时

饱和吸附量为311 mg·g-1;吸附量随铀溶液初始浓度的增大而增大

而吸附百分数则相反;吸附等温线符合Langmuir和Freundlich吸附模型

吸附动力学符合准二级动力学方程;吸附过程中起主要作用的基团是Si—OH和Si—O—Si。

Abstract

SBA-15 with short channels was employed as adsorbent for uranium ions.Different factors including contact time

initial pH value and initial concentration of solution were examined to investigate their effects on adsorption of uranium by SBA-15 with short channels.Adsorption kinetics

adsorption isotherms and changes of FT-IR spectra of SBA-15 with short channels before and after adsorption were also studied.According to the experiment

uranium adsorption on SBA-15 is strongly pH-dependent and the maximum adsorption occurs at pH of 6

the adsorption reaches equilibrium within 30 min and the maximum adsorption capacity is 311 mg·g-1 for initial solution concentration of 100 mg·L-1.Adsorption capacity increases but adsorption percentage decreases with the increase of initial uranium concentration. Adsorption isotherm follows both Langmuir and Freundlich models

and pseudo-second order rate equation is better to describe kinetic process.The Si—OH and Si—O—Si groups existing in SBA-15 are mainly responsible for the adsorption of uranium.

关键词

Keywords

references

浏览量

406

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

基于光、电驱动促进海水中铀和锂提取的研究进展

功能化多孔氮化碳材料对铀的吸附性能研究

铁炭微电解与硫酸盐还原菌耦合修复铀尾矿库渗滤水的研究

中空孔结构对W掺杂MFI分子筛丙酮吸附行为的研究

一种新的颗粒炭材料的制备及其高效分离甲烷氮气性能