原子能科学技术2017，Vol.51Issue(3)：404-410,7.DOI:10.7538/yzk.2017.51.03.0404
络合-吸附方法去除核电厂模拟废水中的钴
Removal of Cobalt in Simulated Wastewater from Nuclear Power Plant by Complexation Enhanced Adsorption Process
王亚东 1崔安熙 1安鸿翔 1郭喜良 1冯文东 1杨卫兵 1郭霄斌1
作者信息
- 1. 中国辐射防护研究院,山西太原 030006
- 折叠
摘要
Abstract
Complexation enhanced adsorption process was put forward to purify radioac-tive wastewater in nuclear power plant .EDTA was selected as the complexant ,activa-ted carbon (AC) as the adsorbent and cobalt as the target nuclide to observe the feasibil-ity of this process and the impact of related factors .T he results show that the removal rate after adsorption by AC improves remarkably by adding EDTA into the solution , which fits the theoretical expectation well and verifies the feasibility of this process .The results of conditional experiments show that the removal rate increases with the amount of AC ,the adsorption equilibrium time is 16 h ,the pH of the solution influences the processes of complexation and adsorption significantly , and the most suitable pH is about 7.0 ,and the highest removal rate is obtained with the molar concentration ratio of EDTA to Co2+ of 1:1 .The adsorption properties of AC for EDTA-Co complex were investigated by data fitting . T he results show that the adsorption fits Freundlich isotherm model well ,and the kinetic process of adsorption can be described by the pseu-do-second-order kinetic model .关键词
放射性废水/络合/吸附/EDTA/活性炭/钴Key words
radioactive wastewater/complexation/adsorption/EDTA/activated carbon/cobalt分类
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王亚东,崔安熙,安鸿翔,郭喜良,冯文东,杨卫兵,郭霄斌..络合-吸附方法去除核电厂模拟废水中的钴[J].原子能科学技术,2017,51(3):404-410,7.
