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All Journal Urania Jurnal Ilmiah Daur Bahan Bakar Nuklir
Ghaib Widodo
Pusat Teknologi Bahan Bakar Nuklir (PTBBN), BATAN Kawasan Puspiptek-Tangerang Selatan 15314, Banten
Materials Science & Nanotechnology

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Effect Of Current, Time, Feed and Cathode Type On Electroplating Process Of Uranium Solution Sigit, Sigit; Widodo, Ghaib; Wasito, Bangun; Basuki, Kris Tri; Fahrunissa, Fahrunissa
Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol 23, No 1 (2017): Februari 2017
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (499.379 KB) | DOI: 10.17146/urania.2017.23.1.3155

Abstract

Electroplating process of uranyl nitrate and effluent process has been carried out in order to collect uranium contained therein using electrode Pt / Pt and Pt / SS at various currents and times. Material used for electrode were Pt (platinum) and SS (Stainlees Steel). Feed solution of 250 mL was entered into a beaker glass equipped with Pt anode - Pt cathode or Pt anode - SS cathode, then fogged direct current from DC power supply with specific current and time so that precipitation of uranium sticking to the cathode. After the processes completed, the cathode was removed and weighed to determine weight of precipitates, while the solution was analyzed to determine the uranium concentration decreasing after and before electroplating process. The experiments showed that a relatively good time to acquire uranium deposits at the cathode was 1 hour by current 7 ampere, uranyl nitrate as feed, and Pt (platinum) as cathode. In these conditions, uranium deposits attached to the cathode amounted to 74.96% of the original weight of uranium oxide in the feed or 206.5 mg weight. The use of Pt cathode for  uranyl nitrate, SS and Pt cathode for effluent process feed gave uranium specific weight at the cathode of 12.99 mg/cm2, 2.4 mg/cm2 and 5.37 mg/cm2respectively for current 7 ampere and electroplating time 1 hour.Keywords: Electroplating, uranyl nitrate, effluent process, Pt/Pt electrode, Pt/SS electrode
Proses Ekstraksi-Stripping UO2(NO3)2 Berimpuritas Hasil Pelarutan Yellow Cake Muchsin, Anwar; Widodo, Ghaib
Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol 23, No 1 (2017): Februari 2017
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/urania.2017.23.1.3172

Abstract

Uranil nitrat/UO2(NO3)2  merupakan bahan dasar/umpan yang dipakai sebagai bahan bakar baik reaktor riset maupun reaktor daya. Proses ekstraksi-stripping  perlu dilakukan terhadap UO2(NO3)2, karena di dalam UO2(NO3)2 tersebut masih terdapat impuritas yang terikut selama berlangsungnya proses pelarutan Yellow Cake. Untuk mendapatkan larutan UO2(NO3)2 yang memenuhi persyaratan murni nuklir (nuclear grade), maka harus dilakukan proses pemurnian dengan ekstraksi-stripping menggunakan 3 (tiga) parameter yaitu laju alir umpan, keasaman umpan pada proses ekstraksi, dan keasaman pada proses stripping.  Mekanisme proses ekstraksi terjadi UO2(NO3)2 akan masuk ke fasa organik TBP, sedangkan impuritasnya berada dalam fasa air (rafinat). Uranium dalam fasa organik dilakukan proses stripping dengan menentukan keasaman (sebagai parameter), sehingga diperoleh larutan campuran UO2(NO3)2 murni nuklir (nuclear grade). Kondisi proses ekstraksi diperoleh laju air  umpan 15 L/jam, keasaman umpan pada proses ekstraksi sebesar ±3 M dan diperoleh kadar uranium sebesar  48.5365 gU/L, sedangkan proses stripping diperoleh UO2(NO3)2 sebesar  64,7860 gU/L pada keasaman 0,04 M. Kata Kunci: ekstraksi, stripping, laju alir umpan, perbandingan TBP/kerosin, keasaman.
Co-Authors Anwar Muchsin Bangun Wasito Fahrunissa, Fahrunissa Kris Tri Basuki Sigit Sigit