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2024 Vol.34, Issue 5 Preview Page

Research Paper

Separation of Zirconium and Hafnium from Zirconium Oxychloride (ZOC) Synthesis of Kalimantan Zircon Sand Concentrate Using Extraction Method with tributyl phosphate (TBP)-Dodecane in Nitric Acid Medium
Kharistya Rozana12
,
Ariyani Kusuma Dewi3
,
Herry Poernomo4
,
Won-Chun Oh5
,
Karna Wijaya1†
1Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
2Directorate of Laboratory Management, Research Facilities, and Science and Technology Park, National Research and Innovation Agency, Yogyakarta 55281, Indonesia
3Department of Nuclear Chemical Engineering, Polytechnic of Institute Nuclear Technology, National Research and Innovation Agency, Yogyakarta 55281, Indonesia
4Research Center of Mining Technology, Research Organization of Nanotechnology and Materials, National Research and Innovation Agency, South Lampung 35361, Indonesia
5Department of Advanced Materials and Engineering, Hanseo University, Seosan 31962, Republic of Korea
†Corresponding author E-Mail : karnawijaya@ugm.ac.id (K. Wijaya, UGM)
27 May 2024. pp. 247-253
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Abstract

The separation of zirconium and hafnium using tributyl phosphate (TBP)-Dodecane extractants in nitric acid medium was performed. Zirconium oxychloride, used as extraction feed, was obtained from the synthesis of Kalimantan zircon sand concentrate smelted using NaOH. The extraction process was carried out by dissolving chloride-based metals in nitric acid media in the presence of sodium nitrate using TBP-Dodecane as an extractant. Some of the extraction parameters carried out in this study include variations in organic phase and aqueous phase (O/A), variations in contact time, and variations in nitric acid concentration. Extraction was carried out using a mechanical shaker according to the parameter conditions. X-ray fluorescence (XRF) was used for elemental (Zr and Hf) composition analysis of the aqueous solution. The results showed that zirconium was separated from hafnium at optimum conditions with an organic/aqueous ratio of 1:5, contact time of 75 min, and an HNO3 concentration of 7 M. The resulting separation factor of zirconium and hafnium using TBP-Dodecane was 14.4887.

Keywords
zirconium
hafnium, extraction
tributyl phosphate (TBP)-Dodecane
nitric acid
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Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 34
  • No :5
  • Pages :247-253
  • Received Date : 2024-02-16
  • Revised Date : 2024-05-14
  • Accepted Date : 2024-05-15
  • DOI :https://doi.org/10.3740/MRSK.2024.34.5.247
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