哈尔滨工程大学学报2025，Vol.46Issue(11)：2163-2172,10.DOI:10.11990/jheu.202507002
亚铁氰化钾铜功能化地质聚合物制备及Cs+吸附行为研究
Preparation and cesium adsorption behavior of potassium copper hexacyanoferrate-functionalized geopolymer
摘要
Abstract
Nuclear-grade ion exchange resins currently used in nuclear power plants exhibit poor selective adsorption performance for Cs+.To resolve this deficiency,a highly selective mesoporous adsorption material,KCuCF@MK-GP-potassium ferricyanide copper loaded onto a kaolin-based geopolymer—was synthesized.The adsorption ex-perimental results demonstrated that KCuCF@MK-GP exhibited highly selective adsorption performance for Cs+.The Cs+removal efficiency and distribution coefficient were slightly affected by coexisting ions.The adsorption process was found to be spontaneous,endothermic,and accompanied by an increase in entropy,and it followed the pseudo-second-order kinetic model and the Langmuir isotherm.The adsorption rate constant k2 was calculated to be 8.1×10-4 g/(mg·min),with a maximum adsorption capacity of 158.5 mg/g.The primary adsorption mechanism was attributed to ion exchange between aqueous Cs+and K+in the adsorbent materials.Liquid film diffusion was i-dentified as the control step in the adsorption process.关键词
偏高岭土/悬浮固化法/地质聚合物/功能材料/浸渍负载/亚铁氰化钾铜/选择性吸附/铯离子Key words
metakaolin/suspended curing method/geopolymer/functional materials/impregnated loading/potassi-um copper hexacyanoferrate/selective adsorption/cesium ion分类
能源科技引用本文复制引用
王伟,杜玉龙,张子健,李春晖,矫彩山,何辉..亚铁氰化钾铜功能化地质聚合物制备及Cs+吸附行为研究[J].哈尔滨工程大学学报,2025,46(11):2163-2172,10.基金项目
国家自然科学基金项目(U1967219). （U1967219）
