期刊论文

中文

南华大学学报(自然科学版)

1673-0062

2019

33

3

8-14

10.19431/j.cnki.1673-0062.20190419.003

51774187:国家自然科学基金 2018JJ3448:湖南省自然科学基金 2018YKZX1010:工程技术研究中心项目 2017CT5006:湖南省中央引导地方科技发展资助项目 17A184:湖南省教育厅重点项目 2018KYY143:南华大学研究生科学基金项目

本校为第一机构

研究以氢氧化钾（KOH）为改性剂制备夏威夷果壳活性炭去除U（Ⅵ）。除铀机理为吸附剂活化过程中增加了醚基、羰基、羧基的含量和比表面积,实验最大吸附量为9. 63 mg/g、去除率94. 6%。动力学分析表明吸附过程化学吸附优于物理吸附,吸附等温线分析表明吸附过程既有单分子层吸附又有多层吸附且反应容易进行,热力学分析表明吸附过程是自发的吸热反应。

In this paper,macadamia nut shell was used to prepare activated carbon (AC),KOH was used to modify the AC.The removal mechanism of uranium is that the contents of ether group,carbonyl group,carboxyl group and specific surface area are increased in the process of adsorbent activation.The maximum U(Ⅵ) adsorption capacity of AC was 9 .63 mg/g and removal rate was 94.6%.Kinetic analysis showed that chemical adsorption was slightly superior to physical adsorption in the adsorption process.The adsorption isotherm analysis showed that there were both...