Salehuddin, Ahmad Hayaton Jamely Mohd and Ismail, Aznan Fazli and Aziman, Eli Syafiqah and Mohamed, Nurul Aida and Teridi, Mohd Asri Mat and Idris, Wan Mohd Razi (2021) Production of high-purity ThO2 from monazite ores for thorium fuel-based reactor. Progress in Nuclear Energy, 136. ISSN 0149-1970, DOI https://doi.org/10.1016/j.pnucene.2021.103728.
Full text not available from this repository.Abstract
The present study aims to investigate the optimum parameter in producing high-purity thorium dioxide (ThO2) using Di-2-ethylhexyl phosphoric acid (D(2)EHPA) and Aliquat-336 as solvent materials. The extraction and purification process was performed using l'h-RE](OH)(4) compound which was selectively precipitated from the monazite leach solution. Several parameters such as types of acid (HCl, HNO3 and H-2(SO4)), acid molarity (1M-6M), and solvent ratio (10%-30%) were investigated. The findings indicate that different solvents require a distinctive aqueous medium to extract thorium. The optimum concentrations of D 2 EHPA and Aliquat-336 in extracting thorium were identified to be at 1M H-2(SO4) and 4M HNO3 with 30% and 20% ratio, respectively. The multi-stage extraction process was successfully extracted and purified thorium at a purity of 96.8% (D(2)EHPA) and 98.0% (Aliquat-336). Subsequent conversion to ThO2 yielded a high-purity thorium dioxide at 99.1%. In general, the study elucidates that both solvents have the potential to be utilized as thorium extracting agents in preference to the conventional tri-butyl phosphate (TBP).
| Item Type: | Article |
|---|---|
| Funders: | Universiti Kebangsaan Malaysia (UKM) [GUP2018113] |
| Uncontrolled Keywords: | Thorium fuel; Solvent extraction; D(2)EHPA; Ali quat-336; High-purity ThO2 |
| Subjects: | Q Science > Q Science (General) T Technology > T Technology (General) |
| Divisions: | Nanotechnology & Catalysis Research Centre |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 04 Aug 2022 03:36 |
| Last Modified: | 04 Aug 2022 03:36 |
| URI: | http://eprints.um.edu.my/id/eprint/28404 |
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