Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal Urania Jurnal Ilmiah Daur Bahan Bakar Nuklir Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir
Noerpitasari, Erlina
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Engineering Materials Science & Nanotechnology

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
ANALISIS PERILAKU ISOTERM, TERMODINAMIKA, DAN KINETIKA ADSORPSI STRONTIUM MENGGUNAKAN TiO2 – ZEOLIT LAMPUNG Sholahudin, M. Fiqri; Purwaningsih, Henny; Noerpitasari, Erlina; Boybul, Boybul; Yanlinastuti, Yanlinastuti
Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol 29, No 2 (2023): OKTOBER, 2023
Publisher : website

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/urania.2023.29.2.6840

Abstract

Bahan bakar nuklir setelah digunakan di reaktor  menghasilkan beberapa hasil fisi, dimana salah satunya adalah strontium (90Sr). Isotop strontium dapat dimanfaatkan menjadi bahan baku pembuatan baterai, tetapi strontium tersebut masih tercampur dengan hasil fisi atau isotop lainnya sehingga diperlukan proses pemisahan. Salah satu metode pemisahan strontium adalah dengan adsorpsi. Dalam penelitian ini, campuran TiO2-zeolit Lampung dievaluasi kinerjanya sebagai adsorben sehingga dapat digunakan untuk adsorpsi strontium. Zeolit Lampung awal diaktivasi menggunakan asam sulfat pekat untuk membersihkan pori-pori yang masih mengandung pengotor. Kemudian zeolit dicampurkan dengan TiO2 menggunakan metode stir casting. Adsorben TiO2-zeolit Lampung yang diperoleh kemudian dikarakterisasi menggunakan Fourier Transform Infrared (FTIR), X-Ray Diffraction Spectrometer (XRD), dan Scanning Electron Microscope (SEM). Setelah itu dilakukan uji adsorpsi dengan model isoterm, termodinamika, dan kinetika. Terbentuknya TiO2-zeolit yang dicirikan menggunakan spektroskopi FTIR  ditunjukkan dengan adanya puncak serapan Ti-O-Si pada zeolit Lampung setelah ditambahkan TiO2. Hasil analisis menggunakan XRD memperlihatkan zeolit Lampung berjenis klinoptilolit dan mordenit, serta TiO2 yang digunakan memiliki fase anatase. Hasil analisis menggunakan SEM mengindikasikan TiO2 tersebar pada permukaan zeolit Lampung. Model isoterm adsorpsi untuk adsorben TiO2-zeolit memenuhi model isoterm Langmuir. Kajian termodinamika menunjukkan proses adsorpsi bersifat endoterm dan tidak spontan, dan kinetika adsorpsi strontium mengikuti orde kedua semu.Kata kunci: Isoterm, adsorpsi, strontium, TiO2, zeolit.
Adsorption of Uranium onto Delaminated Amino Talc-Like Clay Saputra, Dwi Luhur Ibnu; Purwaningsih, Henny; Farid, Muhammad; Basuki, Triyono; Nakashima, Satoru; Rachmadetin, Jaka; Laksmana, Roza Indra; Sihotang, Juan Carlos; Noerpitasari, Erlina
EKSPLORIUM Vol. 46 No. 1 (2025): MAY 2025
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/eksplorium.2025.12136

Abstract

Uranium-containing waste is generated as a by-product of nuclear power plants, radioisotope production, nuclear fuel fabrication, and mineral processing. A radioactive waste treatment plant treats radioactive liquid waste using various methods, including evaporator technology, ion exchange resins, and adsorbents. Various adsorbents have been investigated for the removal of uranium from aqueous solutions. Negatively charged adsorbents, such as natural clay, biomass-based adsorbents, and polymers, have been utilized for uranium adsorption. Previous research on uranium adsorption by amino clay, which has a positively charged surface, was still very limited compared to other adsorbents. In the present study, the application of Delaminated Amino talc-like Clay (DAC) for removing uranium from aqueous solutions was examined. DAC with amino propyl on the tetrahedral sheet surface is easily protonated to form a positively charged R-NH3 that may influence its interaction with uranium. The speciation and reaction kinetic order were studied in aqueous solution with pH and contact time as the variables. The adsorption of uranium onto DAC, which is likely due to physicochemical interactions and ion trapping, was evaluated. The maximum removal efficiency (84.5%) and adsorption capacity (113.06 mg/g) were achieved at pH 4 after approximately 60 minutes. The uranium adsorption capacity is low at pH 2 and 3 (10%), which is due to the repulsive interaction between the positive surface charge of DAC and (UO2)2+ as the dominant uranium species. Uranium adsorption capacity is high at pH 4 and 5, because the predominant species of uranium, such as (UO2)2+ and [(UO2)2(OH)2]2+, were probably adsorbed by DAC through chemisorption with R-NH2. The adsorption of uranium on the DAC was found to follow the pseudo-second order kinetic model.
Co-Authors Basuki, Triyono Boybul Boybul Henny Purwaningsih Jaka Rachmadetin Laksmana, Roza Indra Muhammad Farid Nakashima, Satoru Saputra, Dwi Luhur Ibnu Sholahudin, M. Fiqri Sihotang, Juan Carlos Yanlinastuti Yanlinastuti