矿产综合利用2025，Vol.46Issue(3)：1-9,32,10.DOI:10.12476/kczhly.202208250537
钙—铝—铈三元复合物吸附脱除氟离子的性能及机理
Fluoride Removal by Calcium-aluminum-cerium Ternary Composite:Adsorption Performances and Mechanism
摘要
Abstract
Fluoride-containing industrial wastewater poses great threat to environmental safety and human health.In this study,calcium-aluminum-cerium ternary composite(CAC)was synthesized by co-precipitation method,and characterized by XRD,FTIR,N2 adsorption,SEM,etc..The performances and mechanisms of F-adsorption by CAC were thoroughly investigated.Experimental results showed that weakly acidic environment(pH 5.0)was favorable for F-removal by CAC adsorption.F-adsorption by CAC was a spontaneous and endothermic process,which could be well described by the Langmuir model.The maximum adsorption capacity was calculated to be 56.28 mg/g,while the adsorption equilibrium reached at about 12 h.The pseudo-second-order kinetic model fitted the adsorption kinetic well.F-adsorption was remarkably affected by the co-existing CO32-and HCO3-,while Cl-,Br-,SO42-influenced F-adsorption little.Electrostatic attraction and ion exchange were considered to be the main adsorption mechanisms.关键词
三元复合物/稀土/氟离子/吸附/废水Key words
ternary composite/rare earth/fluoride ion/adsorption/wastewater分类
矿业与冶金引用本文复制引用
刘雨秋,高子航,周慧,张永奎,王雅博..钙—铝—铈三元复合物吸附脱除氟离子的性能及机理[J].矿产综合利用,2025,46(3):1-9,32,10.基金项目
四川大学"化工之星"优秀青年人才培养计划(2021) （2021）
