摘要
研究利用水热法制备Mg-Fe-La层状三金属氧化物(Mg-Fe-La TmO),通过吸附动力学和吸附等温线等实验探索其对As(Ⅴ)的吸附行为。结果表明,Mg-Fe-La TmO对As(Ⅴ)的吸附行为符合准二级动力学模型与Freundlich模型,饱和吸附量达65.2 mg/g,高于一般吸附剂。XPS显示Mg-Fe-La TmO对As(Ⅴ)的吸附机理主要是形成了铁砷和镧砷络合物。
The Mg-Fe-La layered trimetal oxides(Mg-Fe-La TmO) was prepared by hydrothermal method.The adsorption behavior of As(Ⅴ) was explored by adsorption kinetics and adsorption isotherm.The results show that the adsorption behavior accords with the pseudo-second-order kinetics model and the Freundlich model,the saturated adsorption capacity of Mg-Fe-La trimetal oxides is 65.2 mg/g,which is higher than that of the general adsorbent.XPS shows that the adsorption mechanism of As(Ⅴ) onto Mg-Fe-La TmO attribute to the formation of iron-arsenic and antimony-arsenic complexes.
作者
鄢圣金
夏令
吴鹏
宋少先
YAN Sheng-jin;XIA Ling;WU Peng;SONG Shao-xian(Hubei Key Laboratory of Mineral Resources Processing and Environment,School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;Key Laboratory of Rare Mineral,Ministry of Land and Resources,Wuhan 430034,China)
出处
《硅酸盐通报》
CAS
北大核心
2019年第10期3060-3066,共7页
Bulletin of the Chinese Ceramic Society
基金
国土资源部稀土稀有稀散矿产重点实验室开放基金(KLRM-KF201906)
湖北省自然科学基金面上项目(2018CFB605)
中央高校基本科研业务费专项资助(183108001,173208001,193208007)
关键词
镧
砷
吸附
lanthanum
arsenic
adsorption
