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Dian Anggraini
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Journal : Jurnal Zeolit Indonesia

 1 
THE KINETIC AND DIFUSSION ION EXCHANGE OF Cs ON ZEOLITE BAYAH, LAMPUNG, AND TASIKMALAYA Dian Anggraini; Noviarty Noviarty; Arif Nugroho
Jurnal Zeolit Indonesia Vol. 9 No. 2 (2010)
Publisher : Jurnal Zeolit Indonesia

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The ion exchange of Cs on NH4-Zeolite which has been activated become a zeolite monocation has been conducted on natural zeolite from Bayah, Lampung, and Tasikmalaya. On these three types of zeolite, the process of ion exchange of Cs with ammonium ion was conducted at various time (from 1 hour up to 24 hours) and temperature (303 K and 323 K). Cation exchange kinetics and diffusion process on each type of zeolite was observed and calculated the parameters included diffusion coefficient and activation energy using Arrhenius formula. The study showed that diffusion coefficient from Cs-ions into zeolite of Bayah, Lampung, and Tasikmalaya almost same, which is about 2,3 10-13 , 2,3 10-13 and 2,1 10-13 m2.det.-1 at temperature 303 K, and 9,3 10-14, 9,6 10-14, and 9,6 10-14 m2.det.-1 at temperature 323 K. The parameter calculation result of ion exchange reaction is activation energy Ea (kJ/mol) on that types of zeolite are almost same value, which is 36.61, 36.61, and 31.09 for each zeolite of Bayah, Lampung, and Tasikmalaya. The study showed that Ea value was greater than the previous study by using artificial zeolite (zeolit-A with Ea = 9,96 kJ/mol), so it can be concluded that Cs-ions exchange into natural zeolite has a greater barrier because the composition of natural zeolite more complex which was might contain more than one types of zeolite structure.
ANALYSIS OF ISOTOPE Cs ON PROCESSING SEPARATION OF Cs AND ZEOLITE USING SPECTROMETRY-γ Arif Nugroho; Dian Anggraini; Noviarty Noviarty
Jurnal Zeolit Indonesia Vol. 9 No. 2 (2010)
Publisher : Jurnal Zeolit Indonesia

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The analysis of Cs-isotope was conducted on separation process of Cs 137 isotope using a Lampung zeolite. Analysis of Cs based on modification of ASTM E320-79 method. Modification process including a Cs separation by extraction using a TBP/OK and by direct sedimentation as CsClO4, which was subsequently applied using a zeolite. Cs-isotope measurement was conducted using spectrometer γ. The result of Cs 137 analysis through the direct sedimentation with zeolite obtained about 86,40% ± 0,1%, while the analysis of Cs-137 by extraction modification separated process which followed by catching zeolite obtained a recovery about 28,05% ± 5,28%, and by modification precipation process with ASM obtained a recovery about 52,55% ± 1,11%.
SELECTIVITY OF LAMPUNG ZEOLITE TOWARDS MATRICES CATIONS GENERATED FROM URANIUM FISSION Siti Amini; Dian Anggraini; Yusuf Nampira; Rosika Rosika; Noviarti Noviarti; Arif Nugroho
Jurnal Zeolit Indonesia Vol. 2 No. 1 (2003)
Publisher : Jurnal Zeolit Indonesia

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Selectivity of zeolite-lampung (ZKK) towards some matrices cations generated from uranium fission products has been investigated using some typical fission product-non-radioactive cations by cation exchange batch-system process. The previous investigation showed that zeolite-lampung is effectively able to absorb cesium ion from radioactive waste, consequently the presence of others cations i.e. generated cations from the uranium fission products are assumed as the competitive cations which may affect the zeolite selectivity on to Cs exchanges, on the otherhand the Cs-exchange capacity of zeolite would decrease. The main matrices cations which present in the natural zeolite are K+, Na+ and Ca2+and those are generated from fission products such as Cs+, Ba2+, Sr2+ and Ce4+ exist in the nuclear spent fuel solution. The ion exchanges of counterpart cations in zeolites with that each of Cs+, Ba2+, Sr2+ and Ce4+ ion or/and its mixtures have been examined. The selectivity of zeolite onto mentioned exchanged cations has been shown by the correlation of fraction of the cations concentration in the zeolite (Az) towards that in equilibrated solution (As). The results show that the raw zeolite Lampung selectivity is decrease in order to Cs+> Ba2+= Sr2+ > Ce4+. The exchanged capacity of zeolite into Cs+ ion is decreased by the presence of combining ions of Ba2+, Sr2+ and Ce4+, and so are those competitive cations.
Cs ION EXCHANGE CAPACITY OF ZEOLITE BAYAH, LAMPUNG, AND TASIKMALAYA Noviarty Noviarty; Dian Anggraini; Arif Nugroho
Jurnal Zeolit Indonesia Vol. 8 No. 1 (2009)
Publisher : Jurnal Zeolit Indonesia

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Abstract

Cs ions exchange process has been conducted on natural zeolite (from Bayah, Lampung, and Tasikmalaya) which was activated with ammonium chloride. NH4-zeolite which was formed, is used to exchanger or absorber material of Cs ions. The duration of ions exchange process was optimized by varying the stirring time of 1 hours, 2 hours, 3 hours, 4 hours, 5 hours, and 24 hours. In all three zeolite types was obtained the optimization process time are the contact time of 1 hours. Cation exchange capacity (CEC) of natural zeolite was determined by standard methods. Attempts to obtain a monocation zeolite as a NH4-zeolite effectively acquired about 88% which used as a exchanger or absorber Cs ions. The effectiveness of Cs ions Cation exchange capacity with the ammonium was determined by batch-exchange for 1 hour. The calculation result o effectiveness CEC-Cs are 1.4269 Meq/gram ± 0.0397, RSD: 2.79% for Bayah zeolite, 1.4476 Meq/gram ± 0.0103, RSD: 0.71% for Lampung zeolite, 1.4044 Meq/gram ± 0.0050, RSD: 0.36% for Tasikmalaya zeolite. Stability of Cs-zeolte bond against heat treatment was tested at temperature of 25°, 300°, 600 °, 900°, and 1200 °C. The result showed that the relea se of Cs-ions is not significant from zeolite structure. The heating below 900°C, the release of Cs-ions jus t occurs on the surface (it was not change the initial of zeolite structure), whereas above that temperature was occurs the changed of zeolite structure, although there was not visible the release of Cs-ions on leaching process at the water. The conclusion is all three types of natural zeolite was potentially to be used as Cs-ions isolate which is especially useful to absorbing Cs-radioactive isotope as a result from fission of nuclear fuel element.
Co-Authors . Masrukan . Noviarty . Yanlinastuti administrator admin Amir Awaluddin Arif Nugroho ARIF NUGROHO Aslina Br. Ginting Aslina Br. Ginting ASLINA BR. GINTING Athfal Aldiefa Ayu Monia, Fenny Ayu Monia Azizah Azizah Boybul . Boybul Boybul BOYBUL BOYBUL Dewi Marfuah Drs. Saripin., M.Kes AIFO ' Fitri Mulianda Gina Nurdina Gina Nurdina Hadi Susanto Hani Nastiti Tantika Hasri Fendi Herdiman Hilda Novyanda Iis Haryati Imam Hanafi Jesi Alexander Alim Juniarni, Lia jurnalmap map Kristi Agust Maman Kartaman Muhammad Fadli Azim Nanang Supriadi Noviarti Noviarti Noviarty Noviarty Pepi Helza Yanti Puspasari, Susy Rahmi Eka Putri Rosika Kriswarini Rosika Rosika Sabdo Purnomo Siti Amini Supardjo Supardjo Sutarji ÔÇì Sutri Indaryati Syahrilfuddin Syahrilfuddin Syaiful Syaiful Taufiq, M. Aries Teo Zumibakti Andani Yanlinastuti Yanlinastuti Yasir Wijaya Yusuf Nampira