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Solvent extraction of light rare earths from acidic medium by Di-(2-ethylhexyl) phosphoric acid in kerosene

An organophosphorus reactant, D2EHPA, in kerosene has been employed as an extractant for solvent extraction of a mixture of light rare earths (La(III), Nd(III) and Ce(IV)) from acidic nitrate and sulphuric medium. Effect of various concentrations of acidic solutions and extractant on the extractio...

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Main Authors: Khaironie Mohamed Takip,, Masturah Markom,, Meor Yusoff Meor Sulaiman,
Format: Article
Language:English
Published: Fakulti Kejuruteraan ,UKM,Bangi. 2015
Online Access:http://journalarticle.ukm.my/9508/1/8.pdf
http://journalarticle.ukm.my/9508/
http://www.ukm.my/jkukm/?page_id=557
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spelling my-ukm.journal.95082016-12-14T06:50:08Z http://journalarticle.ukm.my/9508/ Solvent extraction of light rare earths from acidic medium by Di-(2-ethylhexyl) phosphoric acid in kerosene Khaironie Mohamed Takip, Masturah Markom, Meor Yusoff Meor Sulaiman, An organophosphorus reactant, D2EHPA, in kerosene has been employed as an extractant for solvent extraction of a mixture of light rare earths (La(III), Nd(III) and Ce(IV)) from acidic nitrate and sulphuric medium. Effect of various concentrations of acidic solutions and extractant on the extraction of rare earths was investigated. The experiments were carried out under various concentrations of aqueous phase of acidic solutions (0.1-0.5 M) and organic phase of D2EHPA (0.1-1 M) at organic-to-aqueous (O/A) phase ratio of 1. The effect of temperature on extraction was also studied by varying temperature range from 278 to 318 K. Extraction equilibrium time was investigated to determine the optimum time for extracting the studied rare earths. It was found that the extraction of 99.4%, 99.7% and almost 100% for La(III), Nd(III) and Ce(IV), respectively, was achieved from 0.1 M HNO3 feed solution with 1 M D2EHPA at room temperature. The process showed that the selective extraction was in order of La(III)<Nd(III)<Ce(IV). The loaded organic was stripped with various concentration of several acidic solutions (HCl, HNO3 and H2SO4) at O/A phase ratio of 1. It was found that the recoveries of La(III) and Nd(III) to the strip liquor were relatively moderate (45.2-67.7%), whereas losses of Ce(IV) were very low (<1.5%). Fakulti Kejuruteraan ,UKM,Bangi. 2015 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/9508/1/8.pdf Khaironie Mohamed Takip, and Masturah Markom, and Meor Yusoff Meor Sulaiman, (2015) Solvent extraction of light rare earths from acidic medium by Di-(2-ethylhexyl) phosphoric acid in kerosene. Jurnal Kejuruteraan, 27 . pp. 57-62. ISSN 0128-0198 http://www.ukm.my/jkukm/?page_id=557
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
language English
description An organophosphorus reactant, D2EHPA, in kerosene has been employed as an extractant for solvent extraction of a mixture of light rare earths (La(III), Nd(III) and Ce(IV)) from acidic nitrate and sulphuric medium. Effect of various concentrations of acidic solutions and extractant on the extraction of rare earths was investigated. The experiments were carried out under various concentrations of aqueous phase of acidic solutions (0.1-0.5 M) and organic phase of D2EHPA (0.1-1 M) at organic-to-aqueous (O/A) phase ratio of 1. The effect of temperature on extraction was also studied by varying temperature range from 278 to 318 K. Extraction equilibrium time was investigated to determine the optimum time for extracting the studied rare earths. It was found that the extraction of 99.4%, 99.7% and almost 100% for La(III), Nd(III) and Ce(IV), respectively, was achieved from 0.1 M HNO3 feed solution with 1 M D2EHPA at room temperature. The process showed that the selective extraction was in order of La(III)<Nd(III)<Ce(IV). The loaded organic was stripped with various concentration of several acidic solutions (HCl, HNO3 and H2SO4) at O/A phase ratio of 1. It was found that the recoveries of La(III) and Nd(III) to the strip liquor were relatively moderate (45.2-67.7%), whereas losses of Ce(IV) were very low (<1.5%).
format Article
author Khaironie Mohamed Takip,
Masturah Markom,
Meor Yusoff Meor Sulaiman,
spellingShingle Khaironie Mohamed Takip,
Masturah Markom,
Meor Yusoff Meor Sulaiman,
Solvent extraction of light rare earths from acidic medium by Di-(2-ethylhexyl) phosphoric acid in kerosene
author_facet Khaironie Mohamed Takip,
Masturah Markom,
Meor Yusoff Meor Sulaiman,
author_sort Khaironie Mohamed Takip,
title Solvent extraction of light rare earths from acidic medium by Di-(2-ethylhexyl) phosphoric acid in kerosene
title_short Solvent extraction of light rare earths from acidic medium by Di-(2-ethylhexyl) phosphoric acid in kerosene
title_full Solvent extraction of light rare earths from acidic medium by Di-(2-ethylhexyl) phosphoric acid in kerosene
title_fullStr Solvent extraction of light rare earths from acidic medium by Di-(2-ethylhexyl) phosphoric acid in kerosene
title_full_unstemmed Solvent extraction of light rare earths from acidic medium by Di-(2-ethylhexyl) phosphoric acid in kerosene
title_sort solvent extraction of light rare earths from acidic medium by di-(2-ethylhexyl) phosphoric acid in kerosene
publisher Fakulti Kejuruteraan ,UKM,Bangi.
publishDate 2015
url http://journalarticle.ukm.my/9508/1/8.pdf
http://journalarticle.ukm.my/9508/
http://www.ukm.my/jkukm/?page_id=557
_version_ 1643737821539729408
score 13.211869

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