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首页> 外文期刊>Separation and Purification Technology >Separation of La and Ce with PC-88A by counter-curent mixer-settler extraction column
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Separation of La and Ce with PC-88A by counter-curent mixer-settler extraction column

机译：逆流混合沉降式萃取柱用PC-88A分离La和Ce

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摘要

The separation of La and Ce with 1-ethylhexyl phosphonic acid mono-2-ethylhexyl ester (commercially known as PC-88A) from nitrate media was studied with a multistage counter-current mixer-settler extraction column of seven stages developed by the authors. The effect of flow rate ratio of the aqueous phase (Q_w) to the organic phase (Q_o) on the separation was studied. The maximum separation was obtaiend at Q_w/O_o=3.2 and the separation degree was 63. Scrubbing of the organic phase was also studied in order to enhance the separation. La was scrubbed from the organic phase with nitric acid at pH 2.7 and the separation degree during sucrubbing was 45. Simulations of the extraction and scrubbing processes were carried out and compared with the obtained experimental results. Stripping of Ce was achieved by using 100 mol/m~3 nitric acid. The organic phase was successfully recycled during the experiments without any effect on the extraction efficiency.
机译：作者开发了一个由七个阶段组成的多级逆流混合沉降式萃取塔，研究了用硝酸盐介质从1-乙基己基膦酸单-2-乙基己酯（商业上称为PC-88A）分离La和Ce的方法。研究了水相（Q_w）与有机相（Q_o）的流量比对分离的影响。最大分离度为Q_w / O_o = 3.2，分离度为63。还研究了洗涤有机相以提高分离度。用硝酸在pH值为2.7的条件下从有机相中洗涤La，在洗涤过程中的分离度为45。对萃取和洗涤过程进行了模拟，并与获得的实验结果进行了比较。通过使用100 mol / m〜3的硝酸实现Ce的汽提。有机相在实验过程中成功回收，对萃取效率没有任何影响。

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