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Pemisahan Uranium dari Thorium pada Monasit dengan Metode Ekstraksi Pelarut Alamine

Trinopiawan, Kurnia and Prassanti, Riesna and Sumarni, Sumarni and Pudjianto, Rudi (2011) Pemisahan Uranium dari Thorium pada Monasit dengan Metode Ekstraksi Pelarut Alamine. EKSPLORIUM, 32 (155). pp. 47-52. ISSN e-ISSN 2503-426x p-ISSN 0854-1418

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Abstract

The research of monazite processing have obtained the process to recover 62% of rare earth elements (REE) from following steps, such as decomposition, partial dissolution, precipitation at pH 6,3, and precipitation at pH 9,8. There was an increased efficiency of the process in 2009, when ion exchange is used in process development, and the REE recovery became 85%. Besides REE, monazite processing also produce uranium and thorium, but they not separated individually yet. The research of the U from Th separation from pH 6,3 precipitate dissolution by H2SO4, is carried out using solvent extraction method, which the extractant consist of Alamine-336, kerosene, and isodecanol. This research is purposed to obtain the optimum condition of separation uranium from thorium with solvent extraction, where U separated from Th as best as it could . The research’s parameters are feed pH, O/A ratio, and extraction time. And the result showed that the optimum condition were 1,5 of pH, 5 of O/A ratio, and 5 minutes of extraction time, and the percentage of U extracted was 100%, but 32,44% of Th also extracted. From the result, it has a conclusion that 67,56% of Th could be separated from U.

Item Type: Article
Uncontrolled Keywords: pemisahan U; ekstraksi; alamine
Subjects: Daur Bahan Bakar Nuklir dan Bahan Maju > Bahan Galian Nuklir > Teknik Pengolahan Bahan Galian Nuklir
Divisions: Pusat Teknologi Bahan Galian Nuklir
Depositing User: USER PTBGN BATAN
Date Deposited: 04 May 2018 05:27
Last Modified: 04 May 2018 05:27
URI: http://repo-nkm.batan.go.id/id/eprint/873

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