文献类型：期刊文献

英文题名：Removal of cesium from liquid radioactive waste by in situ electrochemical synthesis of cesium zinc ferrocyanide

作者：Yang, Xing[1];Jiang, Li[1];Peng, Shiming[1];Zhang, Lehua[1];Huang, Guangtuan[1]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, Natl Engn Lab Ind Wastewater Treatment, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2021

卷号：626

外文期刊名：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录：;EI(收录号：20212710583001);WOS:【SCI-EXPANDED(收录号:WOS:000686112100009)】；

语种：英文

外文关键词：Cesium zinc ferrocyanide; In situ electrochemical synthesis; Liquid  radioactive waste; Cesium

摘要：Cesium ion in the simulated liquid radioactive waste was treated with cesium zinc ferrocyanide (CsZnFC) precipitate synthesized by in situ electrochemical synthesis method (ISESM) in this study. The best removal rate of Cs+ was 99.42%, and the residual Cs+ in the effluent was 29.13 mu g L-1 under the optimal experimental conditions of initial pH (pHint) of 7.0, reaction temperature (T) of 35 degrees C, current density (J) of 0.7 mA cm-2, electrolytic time (t) of 30 min, and molar ratio of [Fe(CN)6]4- to Cs (RFCN/Cs) of 1.0. The synthesized precipitate was characterized by SEM-EDS, XRD and FT-IR. The precipitated particles are cubic with a particle size of around 190 nm. The XRD pattern shows that the phase composition of the synthesized compound is Cs2Zn[Fe(CN)6], and the absorption peaks of O-H bonds, C-N bonds, and C-Fe bonds appear in IR spectrum. The method of in situ electrochemical synthesis of CsZnFC is promising for the treatment of liquid radioactive wastes.