Diffusion coefficients of trivalent rare earth/actinide ions in acid and alkaline aqueous solutions
Leaching is one of the key process of rare earth (RE) element recovery. This paper was set out to validate the effectiveness of acid/alkali in RE leaching by measuring the limiting ionic conductivity (λo), self-diffusion coefficient (Di) and overall diffusion coefficient (DAB) to obtain a clear insi...
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| Language: | English |
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IOP Publishing Ltd
2019
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| Online Access: | http://umpir.ump.edu.my/id/eprint/35890/ http://umpir.ump.edu.my/id/eprint/35890/1/Diffusion%20coefficients%20of%20trivalent%20rare%20earth_actinide%20ions%20in%20acid%20and%20alkaline%20aqueous%20solutions.pdf |
| _version_ | 1848824896213221376 |
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| author | Liyana Nadirah, M. S. Deraman, M. R. Wan Ibrahim, W. H. Harun, N. |
| author_facet | Liyana Nadirah, M. S. Deraman, M. R. Wan Ibrahim, W. H. Harun, N. |
| author_sort | Liyana Nadirah, M. S. |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | Leaching is one of the key process of rare earth (RE) element recovery. This paper was set out to validate the effectiveness of acid/alkali in RE leaching by measuring the limiting ionic conductivity (λo), self-diffusion coefficient (Di) and overall diffusion coefficient (DAB) to obtain a clear insight on the transport properties of ions and salts in aqueous solution. The calculation diffusivity of Di which is diffuse individual ions in pure water and DAB diffuse in chemical reagents were determined using Nernst-Haskell equation, applicable for 25°C. The results of D i were found to be consistent with experimental data from the literature where most of calculation and experiment data are less than 5% error. The final outcome had managed to confirm that NaOH is best reagent for most RE element leaching, which suits the common practice of the industry. |
| first_indexed | 2025-11-15T03:20:18Z |
| format | Conference or Workshop Item |
| id | ump-35890 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T03:20:18Z |
| publishDate | 2019 |
| publisher | IOP Publishing Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-358902023-04-10T03:57:06Z http://umpir.ump.edu.my/id/eprint/35890/ Diffusion coefficients of trivalent rare earth/actinide ions in acid and alkaline aqueous solutions Liyana Nadirah, M. S. Deraman, M. R. Wan Ibrahim, W. H. Harun, N. QD Chemistry TP Chemical technology Leaching is one of the key process of rare earth (RE) element recovery. This paper was set out to validate the effectiveness of acid/alkali in RE leaching by measuring the limiting ionic conductivity (λo), self-diffusion coefficient (Di) and overall diffusion coefficient (DAB) to obtain a clear insight on the transport properties of ions and salts in aqueous solution. The calculation diffusivity of Di which is diffuse individual ions in pure water and DAB diffuse in chemical reagents were determined using Nernst-Haskell equation, applicable for 25°C. The results of D i were found to be consistent with experimental data from the literature where most of calculation and experiment data are less than 5% error. The final outcome had managed to confirm that NaOH is best reagent for most RE element leaching, which suits the common practice of the industry. IOP Publishing Ltd 2019-12-09 Conference or Workshop Item PeerReviewed pdf en cc_by http://umpir.ump.edu.my/id/eprint/35890/1/Diffusion%20coefficients%20of%20trivalent%20rare%20earth_actinide%20ions%20in%20acid%20and%20alkaline%20aqueous%20solutions.pdf Liyana Nadirah, M. S. and Deraman, M. R. and Wan Ibrahim, W. H. and Harun, N. (2019) Diffusion coefficients of trivalent rare earth/actinide ions in acid and alkaline aqueous solutions. In: IOP Conference Series: Materials Science and Engineering; 1st Process Systems Engineering and Safety Symposium 2019, ProSES 2019 , 4 September 2019 , Kuantan, Pahang. pp. 1-10., 702 (012045). ISSN 1757-8981 (Published) https://doi.org/10.1088/1757-899X/702/1/012045 |
| spellingShingle | QD Chemistry TP Chemical technology Liyana Nadirah, M. S. Deraman, M. R. Wan Ibrahim, W. H. Harun, N. Diffusion coefficients of trivalent rare earth/actinide ions in acid and alkaline aqueous solutions |
| title | Diffusion coefficients of trivalent rare earth/actinide ions in acid and alkaline aqueous solutions |
| title_full | Diffusion coefficients of trivalent rare earth/actinide ions in acid and alkaline aqueous solutions |
| title_fullStr | Diffusion coefficients of trivalent rare earth/actinide ions in acid and alkaline aqueous solutions |
| title_full_unstemmed | Diffusion coefficients of trivalent rare earth/actinide ions in acid and alkaline aqueous solutions |
| title_short | Diffusion coefficients of trivalent rare earth/actinide ions in acid and alkaline aqueous solutions |
| title_sort | diffusion coefficients of trivalent rare earth/actinide ions in acid and alkaline aqueous solutions |
| topic | QD Chemistry TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/35890/ http://umpir.ump.edu.my/id/eprint/35890/ http://umpir.ump.edu.my/id/eprint/35890/1/Diffusion%20coefficients%20of%20trivalent%20rare%20earth_actinide%20ions%20in%20acid%20and%20alkaline%20aqueous%20solutions.pdf |