Leaching of lanthanides from Belitung silica sand using nitric acid

Eny Kusrini, Merisa Aulia, Dwi Aprillia Wulandari, Anwar Usman, Arif Rahman, Yuswan Muharam, Agustino Zulys

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A process of leaching of lanthanides from Belitung silica sand using nitric acid is reported. The research was carried out on several main stages consisting of the pre-treatment, solid-liquid extraction (leaching) with a nitric acid, and lanthanide precipitation using sodium sulphate and sodium phosphate. Concentration of nitric acid as solvent was varied at 2, 3 and 5 M, temperature extraction also varied from 25 to 60°C at different extraction times in 30 and 60 minutes. The lanthanide contents were determined using inductively coupled plasma atomic emission spectroscopy (ICP-OES). It was found that cerium (1.904 ppm) is preferentially extracted over lanthanum (0.535 ppm), neodymium (0.141 ppm) and yttrium (0.027 ppm), with the greatest leaching occurring when the nitric acid (5 M) at temperature of 60°C and extraction time at the 30 minutes. The results suggest that a nitric acid as leaching agent has a role for the extraction of lanthanides from Belitung silica sand.

Original languageEnglish
Title of host publication4th International Tropical Renewable Energy Conference, i-TREC 2019
EditorsEny Kusrini, I. Gde Dharma Nugraha
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735420144
DOIs
Publication statusPublished - 3 Sep 2020
Event4th International Tropical Renewable Energy Conference 2019, i-TREC 2019 - Bali, Indonesia
Duration: 14 Aug 201916 Aug 2019

Publication series

NameAIP Conference Proceedings
Volume2255
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference4th International Tropical Renewable Energy Conference 2019, i-TREC 2019
Country/TerritoryIndonesia
CityBali
Period14/08/1916/08/19

Keywords

  • Lanthanides
  • Leaching
  • Nitric acid
  • Silica sand
  • Solid-liquid extraction

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