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Production of high-purity ThO2 from monazite ores for thorium fuel-based reactor

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 select...

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Main Authors: Salehuddin, Ahmad Hayaton Jamely Mohd, Ismail, Aznan Fazli, Aziman, Eli Syafiqah, Mohamed, Nurul Aida, Teridi, Mohd Asri Mat, Idris, Wan Mohd Razi
Format: Article
Published: Elsevier 2021
Subjects:
Q Science (General)
T Technology (General)
Online Access:http://eprints.um.edu.my/28404/
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spelling my.um.eprints.284042022-08-04T03:36:33Z http://eprints.um.edu.my/28404/ Production of high-purity ThO2 from monazite ores for thorium fuel-based reactor Salehuddin, Ahmad Hayaton Jamely Mohd Ismail, Aznan Fazli Aziman, Eli Syafiqah Mohamed, Nurul Aida Teridi, Mohd Asri Mat Idris, Wan Mohd Razi Q Science (General) T Technology (General) 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). Elsevier 2021-06 Article PeerReviewed 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 <https://doi.org/10.1016/j.pnucene.2021.103728>. 10.1016/j.pnucene.2021.103728
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
T Technology (General)
spellingShingle Q Science (General)
T Technology (General)
Salehuddin, Ahmad Hayaton Jamely Mohd
Ismail, Aznan Fazli
Aziman, Eli Syafiqah
Mohamed, Nurul Aida
Teridi, Mohd Asri Mat
Idris, Wan Mohd Razi
Production of high-purity ThO2 from monazite ores for thorium fuel-based reactor
description 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).
format Article
author Salehuddin, Ahmad Hayaton Jamely Mohd
Ismail, Aznan Fazli
Aziman, Eli Syafiqah
Mohamed, Nurul Aida
Teridi, Mohd Asri Mat
Idris, Wan Mohd Razi
author_facet Salehuddin, Ahmad Hayaton Jamely Mohd
Ismail, Aznan Fazli
Aziman, Eli Syafiqah
Mohamed, Nurul Aida
Teridi, Mohd Asri Mat
Idris, Wan Mohd Razi
author_sort Salehuddin, Ahmad Hayaton Jamely Mohd
title Production of high-purity ThO2 from monazite ores for thorium fuel-based reactor
title_short Production of high-purity ThO2 from monazite ores for thorium fuel-based reactor
title_full Production of high-purity ThO2 from monazite ores for thorium fuel-based reactor
title_fullStr Production of high-purity ThO2 from monazite ores for thorium fuel-based reactor
title_full_unstemmed Production of high-purity ThO2 from monazite ores for thorium fuel-based reactor
title_sort production of high-purity tho2 from monazite ores for thorium fuel-based reactor
publisher Elsevier
publishDate 2021
url http://eprints.um.edu.my/28404/
_version_ 1740826010513833984
score 13.211869

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