Article Per Year (5 Year)
p-Index From 2020 - 2025
0.23
P-Index
This Author published in this journals
All Journal Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir
Rakhma, Ersina
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 
Studi Pendahuluan Pengendapan Cerium, Lanthanum, dan Neodymium dari Larutan Klorida Menggunakan Sodium Karbonat pada Pengolahan Monasit Bangka Trinopiawan, Kurnia; Avifa, Venny Nur; Susilo, Yarianto Sugeng Budi; Rakhma, Ersina; Supriyatna, Yayat Iman; Susanto, Iwan; Permana, Sulaksana; Soedarsono, Johny Wahyuadi
EKSPLORIUM Vol. 41 No. 1 (2020): MEI 2020
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/eksplorium.2020.41.1.5871

Abstract

Monazite mineral as associated mineral of tin mining in Bangka Belitung Islands contains light rare earth elements like Cerium (Ce), Lanthanum (La), and Neodymium (Nd). The objective of this study is to obtain the concentrates of rare earth carbonate through the precipitation process with sodium carbonate (Na2CO3) and determine the effect of concentration and volume of Na2CO3 on the precipitation recovery of Ce, La, and Nd. The preparation of the feed solution was carried out by following the monazite processing route using the alkali method includes the stages of decomposition, dissolution, and precipitation of radioactive elements. The highest precipitation recovery for Ce, La, and Nd are 10.84%, 7.81%, and 2.68% respectively in the use of Na2CO3 with a concentration of 30% wt and a volume of 55 mL.
Geologi dan Identifikasi Cebakan Bijih di Daerah Batubesi, Belitung Timur Ngadenin, Ngadenin; Indrastomo, Frederikus Dian; Karunianto, Adhika Junara; Rakhma, Ersina
EKSPLORIUM Vol. 38 No. 1 (2017): MEI 2017
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/eksplorium.2017.38.1.3376

Abstract

The Batubesi area in Belitung Timur is located in the eastern part of the Southeast Asian granites tin belt zone, so that it expected as a potential area for the occurence of ore deposit such as iron and cassiterite associate with monazite and other accessories minerals. The study aimed to understand the geological setting and to determine the occurrence of primary ore deposit and its radioactive accessories minerals. The methodologies in this research are geological mapping, uranium and thorium grade measurement, petrography, mineragraphy and grain counting analysis. The area composed by granite and metasandstone units. Types of granites are biotite and hornblende granites. The geological structures founded in this area are SW-NE sinistral and NW-SE dextral faults. Ore deposit in the area is primary iron ore deposits of skarn iron tin polymetallic type where magnetite is the main mineral while monazite and zircon are radioactive accessories minerals. The other accessories minerals are hematite, ilmenite, cassiterite, and rutile.
Co-Authors Adhika Junara Karunianto Avifa, Venny Nur Frederikus Dian Indrastomo, Frederikus Dian Iwan Susanto Johny Wahyuadi Soedarsono Kurnia Trinopiawan Ngadenin Ngadenin Permana, Sulaksana Supriyatna, Yayat Iman Yarianto Sugeng Budi Susilo, Yarianto Sugeng Budi