钴
锰
选择性
镍
壳聚糖
衍生工具(金融)
化学
分离(统计)
化学工程
无机化学
催化作用
有机化学
业务
计算机科学
工程类
财务
机器学习
作者
Bing Liao,Na Guo,Shijun Su,Sanglan Ding,Weiyi Sun
标识
DOI:10.1021/acs.iecr.6b04919
摘要
The competitive performance and selectivity for the separation of Co2+ and Ni2+ from Mn2+ solution by a triethylene–tetramine-modified cross-linked chitosan derivative were explored through the adsorption isotherm and kinetic models of single, binary, and ternary components in a static adsorptive experiment and in displacement experiments. In the single system, the adsorption capacities of Co2+, Ni2+, and Mn2+ onto the adsorbent followed the order of Ni2+ > Co2+ > Mn2+. As to binary and ternary systems, strong competitive and selective adsorption behaviors of Co2+ and/or Ni2+ over Mn2+ were observed. Separation factors suggested the extremely higher selectivity for Co2+ and Ni2+ against Mn2+. Displacement experiments showed that the initially adsorbed Mn2+ on the adsorbent could be displaced by subsequently adsorbed Co2+ and/or Ni2+ from the solution, but not the opposite. The results proved that the chitosan derivative was a potential and promising adsorbent for the selective removal of Co2+ and Ni2+ fro...
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