Structural and morphological characterization of Thai monazite ore processing samples
Monazite ore is mainly composed of rare earth elements (such as Ce, Nd, La, etc.). These rare earth elements are widely used in several high technology and industrial products. Thailand Institute of Nuclear Technology has performed research on the separation and purification of rare earth elements...
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| Format: | Article |
| Language: | English |
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Prince of Songkla University
2021-12-01
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| Series: | Songklanakarin Journal of Science and Technology (SJST) |
| Subjects: | |
| Online Access: | https://rdo.psu.ac.th/sjst/journal/43-6/28.pdf |
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| author | Sasikarn Nuchdang Wilasinee Kingkam Vichai Puripunyavanich Unchalee Suwanmanee Pipat Laowattanabandit Dussadee Rattanaphra |
| author_facet | Sasikarn Nuchdang Wilasinee Kingkam Vichai Puripunyavanich Unchalee Suwanmanee Pipat Laowattanabandit Dussadee Rattanaphra |
| author_sort | Sasikarn Nuchdang |
| collection | DOAJ |
| description | Monazite ore is mainly composed of rare earth elements (such as Ce, Nd, La, etc.). These rare earth elements are
widely used in several high technology and industrial products. Thailand Institute of Nuclear Technology has performed research
on the separation and purification of rare earth elements from Thai monazite ore for supporting industrial applications. In this
work, the raw material, intermediate and by-product samples obtained from Thai monazite ore processing were characterized by
various physicochemical techniques (WDXRF, XRD and SEM-EDS) for understanding their structural and morphological
characteristics. The WDXRF analysis showed that the monazite ore sample contained primarily cerium (30.37 wt% of CeO2)
which matched well with the XRD result. An increase in CeO2 concentration up to 39.19 wt% and 64.62 wt% in the intermediate
mixed rare earth and cerium hydroxide cake samples were observed after alkali digestion and nitric acid leaching of monazite
ore, respectively. No rare earth elements could be detected in the tri-sodium phosphate by-product. Thorium oxide at 6.34% in
uranium cake sample was observed. A considerable amount of NaOH in thorium cake sample was noticed. |
| first_indexed | 2024-04-12T11:03:24Z |
| format | Article |
| id | doaj.art-56a225e8e1ef444c92299b96f09ab8e1 |
| institution | Directory Open Access Journal |
| issn | 0125-3395 |
| language | English |
| last_indexed | 2024-04-12T11:03:24Z |
| publishDate | 2021-12-01 |
| publisher | Prince of Songkla University |
| record_format | Article |
| series | Songklanakarin Journal of Science and Technology (SJST) |
| spelling | doaj.art-56a225e8e1ef444c92299b96f09ab8e12022-12-22T03:35:52ZengPrince of Songkla UniversitySongklanakarin Journal of Science and Technology (SJST)0125-33952021-12-01436 1743175010.14456/sjst-psu.2021.228Structural and morphological characterization of Thai monazite ore processing samplesSasikarn Nuchdang0Wilasinee Kingkam1Vichai Puripunyavanich2Unchalee Suwanmanee3Pipat Laowattanabandit4Dussadee Rattanaphra5Nuclear Technology Research and Development Center, Thailand Institute of Nuclear Technology (Public Organization), Ongkharak, Nakhon Nayok, 26120 ThailandNuclear Technology Research and Development Center, Thailand Institute of Nuclear Technology (Public Organization), Ongkharak, Nakhon Nayok, 26120 ThailandNuclear Technology Research and Development Center, Thailand Institute of Nuclear Technology (Public Organization), Ongkharak, Nakhon Nayok, 26120 ThailandDepartment of Chemical Engineering, Faculty of Engineering, Srinakharinwirot University, Ongkharak, Nakhon Nayok, 26120 ThailandDepartment of Mining and Petroleum Engineering, Faculty of Engineering, Chulalongkorn University, Pathum Wan, Bangkok, 10330 ThailandNuclear Technology Research and Development Center, Thailand Institute of Nuclear Technology (Public Organization), Ongkharak, Nakhon Nayok, 26120 ThailandMonazite ore is mainly composed of rare earth elements (such as Ce, Nd, La, etc.). These rare earth elements are widely used in several high technology and industrial products. Thailand Institute of Nuclear Technology has performed research on the separation and purification of rare earth elements from Thai monazite ore for supporting industrial applications. In this work, the raw material, intermediate and by-product samples obtained from Thai monazite ore processing were characterized by various physicochemical techniques (WDXRF, XRD and SEM-EDS) for understanding their structural and morphological characteristics. The WDXRF analysis showed that the monazite ore sample contained primarily cerium (30.37 wt% of CeO2) which matched well with the XRD result. An increase in CeO2 concentration up to 39.19 wt% and 64.62 wt% in the intermediate mixed rare earth and cerium hydroxide cake samples were observed after alkali digestion and nitric acid leaching of monazite ore, respectively. No rare earth elements could be detected in the tri-sodium phosphate by-product. Thorium oxide at 6.34% in uranium cake sample was observed. A considerable amount of NaOH in thorium cake sample was noticed.https://rdo.psu.ac.th/sjst/journal/43-6/28.pdfmonazite ore processingstructuralmorphologicalcharacterizationrare earth element |
| spellingShingle | Sasikarn Nuchdang Wilasinee Kingkam Vichai Puripunyavanich Unchalee Suwanmanee Pipat Laowattanabandit Dussadee Rattanaphra Structural and morphological characterization of Thai monazite ore processing samples Songklanakarin Journal of Science and Technology (SJST) monazite ore processing structural morphological characterization rare earth element |
| title | Structural and morphological characterization of Thai monazite ore processing samples |
| title_full | Structural and morphological characterization of Thai monazite ore processing samples |
| title_fullStr | Structural and morphological characterization of Thai monazite ore processing samples |
| title_full_unstemmed | Structural and morphological characterization of Thai monazite ore processing samples |
| title_short | Structural and morphological characterization of Thai monazite ore processing samples |
| title_sort | structural and morphological characterization of thai monazite ore processing samples |
| topic | monazite ore processing structural morphological characterization rare earth element |
| url | https://rdo.psu.ac.th/sjst/journal/43-6/28.pdf |
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