Effect of DGA substituent structure on rare earth extraction in nitric acid media

2019 2nd International Conference of Green Buildings and Environmental Management

生态环境科学

Du, Huihui^1 ; Peng, Xiujing^1 ; Cui, Yu^1 ; Sun, Guoxin^1

School of Chemistry and Chemical Engineering, Institute for Smart Materials and Engineering, University of Jinan, Jinan

250022, China^1

关键词: Different structure;    Extractant concentration;    Group structure;    Rare earth extraction;    Rare earth ions;    Rare earth metals;    Separation ability;    Separation Property;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/310/4/042023/pdf
DOI  :  10.1088/1755-1315/310/4/042023

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

N substitutent group structure has great influence on the extraction and separation ability of amide extractant. In this paper, four different extractants with different structures, namely TODGA (N,N,N',N'-tetraoctyl-3-oxa-diglycolamide), T2EHDGA (N,N,N',N'-tetraisooctyl-3-oxa-diglycolamide), DPDODGA (N,N'-dipropyl-N,N'-dioctyl-3-oxa-diglycolamide) and DIPDODGA (N,N'-diisopropyl-N,N'-dioctyl-3-oxa-diglycol-amide) were investigated. The extraction ability of rare earth elements in nitric acid system was investigated to understand the relationship between chemical structure of the extractant and the extraction and separation properties of rare earth ions. The effects of nitric acid acidity, rare earth metal ion concentration and extractant concentration on the extraction were also investigated.