ANDREEA GABOR, CORNELIU MIRCEA DAVIDESCU, ADINA NEGREA, MIHAELA CIOPEC, PETRU NEGREA,MONICA BUTNARIU<br>Separation of La(III) Using Functionalized Material on Fixed Bed Column

ANDREEA GABOR, CORNELIU MIRCEA DAVIDESCU, ADINA NEGREA, MIHAELA CIOPEC, PETRU NEGREA,MONICA BUTNARIU
Separation of La(III) Using Functionalized Material on Fixed Bed Column

Abstract:

Lanthanum belongs to the category rare earth elements (REEs) and it is found in the Earth’s crust. Lanthanum is used in many manufacturing processes such as: electronic products, petroleum refining, in the glass industry, in ferroalloys and for rechargeable batteries. All these industries have a different impact on the environment. This study presents the possibility of removing of lanthanum (III) from aqueous solutions using a column filled with an adsorbent material. The adsorbent material is magnesium silicate impregnated with tetrabutylammonium dihydrogen phosphate dissolved in ethyl alcohol. It was characterised by FTIR analysis. The residual concentration of lanthanum, the removal degree for the volume of solution passed through the column and the contact time were determined in order to establish the maximum adsorption capacity. The residual La(III) concentration was determined using inductively coupled plasma mass spectrometry. The number of sorption-desorption cycles of the material was determined. The desorption of the material was made after every sorption process, with a 10% hydrochloric acid solution. Considering that the material was impregnated with a relatively small amount of tetrabutylammonium dihydrogen phosphate, the number of sorption-desorption cycles was rated as four. Keywords: lanthanum, magnesium silicate, fix bed column, functionalized material

Issue: 2016, Volume 67, Issue 11

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