摘要
制备聚丙烯腈-亚铁氰化钾钛球形复合吸附剂(PAN-KTi CF),研究PAN-KTi CF对Cs+的动态吸附性能,考察流量、吸附床高度及竞争离子对穿透曲线的影响,同时采用BDST模型和Thomas模型对实验数据进行分析。研究结果表明:PAN-KTi CF能够有效地去除水中的Cs+,随着吸附床高度的增加、流量的降低穿透时间延长;而溶液中加入竞争离子导致穿透时间缩短。BDST模型能够较准确地描述吸附床高度与穿透时间的关系,而Thomas模型能很好地描绘PAN-KTi CF对Cs+的动态吸附动力学。
Polyacrylonitrile-potassium titanium hexacyanoferrate（ Ⅱ） spherical composite adsorbents（PAN-KTi CF）were prepared to remove cesium ions from aqueous solution. The dynamic adsorption performance of PAN-KTi CF for Cs^＋ was investigated. The effects of bed height, flow rate and competition ions on the breakthrough curves were studied.At the same time, the BDST and Thomas models were applied to analyze the experimental data and the model parameters were evaluated. The results show that PAN-KTi CF as an adsorbent can remove Cs^＋ from aqueous solution efficiently.The breakthrough time increases with the increase of adsorbent-bed height and the decrease of flow rate, while the addition of competition ions to aqueous solution resultes in a decrease of breakthrough time. BDST model can well describe the relationship between adsorbent-bed and breakthrough time, and Thomas model is suitable for describing the kinetics of fixed-bed adsorption.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第11期4100-4104,共5页
Journal of Central South University:Science and Technology
基金
军内科研项目(2012)~~
关键词
铯
亚铁氰化钾钛
聚丙烯腈
动态吸附
BDST模型
Thomas模型
cesium
potassium titanium hexacyanoferrate（Ⅱ）
polyacrylonitrile
dynamic adsorption
BDST model
Thomas model
