Comparison of optimal solvent extraction stages between P204 and [A336][P204] for the separation of europium and gadolinium

This study was designed to compare between the number of extraction stages required by 2-ethylhexyl phosphoric acid mono 2-ethylhexyl ester P204 and ionic liquid-based system of [A336][P204] in a cascade counter-current extraction process for the separation of europium (Eu) and gadolinium (Gd). Eu a...

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Main Authors:	Ismail, N. A., Mohd Yunus, M. Y., Abd Aziz, Mohd Aizudin
Format:	Article
Language:	English
Published:	IOP Publishing 2019
Subjects:	QD Chemistry TN Mining engineering. Metallurgy
Online Access:	http://umpir.ump.edu.my/id/eprint/26771/ http://umpir.ump.edu.my/id/eprint/26771/ http://umpir.ump.edu.my/id/eprint/26771/ http://umpir.ump.edu.my/id/eprint/26771/1/Comparison%20of%20optimal%20solvent%20extraction%20stages%20between%20P204%20and%20%5BA336%5D%5BP204%5D%20for%20the%20separation%20of%20europium%20and%20gadolinium.pdf

id	ump-26771
recordtype	eprints
spelling	ump-267712020-01-23T01:46:19Z http://umpir.ump.edu.my/id/eprint/26771/ Comparison of optimal solvent extraction stages between P204 and [A336][P204] for the separation of europium and gadolinium Ismail, N. A. Mohd Yunus, M. Y. Abd Aziz, Mohd Aizudin QD Chemistry TN Mining engineering. Metallurgy This study was designed to compare between the number of extraction stages required by 2-ethylhexyl phosphoric acid mono 2-ethylhexyl ester P204 and ionic liquid-based system of [A336][P204] in a cascade counter-current extraction process for the separation of europium (Eu) and gadolinium (Gd). Eu and Gd were chosen for this study as these metals are among the strenuous due to low availability in nature and small separation factor. The value of the separation factor (β) of both extractants, was obtained from the experimental work, while other process parameters were calculated using the counter-current model developed by Xu Guangxian. Extraction of Eu using [A336][P204] was found optimum at 3.5 M of nitric acid, with organic to aqueous (O/A) ratio of 9:1, while the optimum condition for P204 was determined at 3.0 M of hydrochloric acid and 9:1 of O/A ratio. The optimized β value for P204 was identified lower (β:2.38) compared to the condition for [A336][P204] (β:3.44). In order to obtain the optimal number of separation stages, the target purity and recovery rates were set to 99.9% and 90% respectively for both extractants. From the Xu model, the results show that [A336][P204] extractant requires at a minimum of four and two extraction and scrubbing stages respectively for maintaining the desired outputs. Meanwhile, P204 extractant needs to develop at least eight extraction stages as well as five scrubbing stages to produce the same production capacity. This finding generally suggests that [A336][P204] is favorable over P204 for the separation of europium and gadolinium particularly from the viewpoint of economic interest. IOP Publishing 2019-11 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/26771/1/Comparison%20of%20optimal%20solvent%20extraction%20stages%20between%20P204%20and%20%5BA336%5D%5BP204%5D%20for%20the%20separation%20of%20europium%20and%20gadolinium.pdf Ismail, N. A. and Mohd Yunus, M. Y. and Abd Aziz, Mohd Aizudin (2019) Comparison of optimal solvent extraction stages between P204 and [A336][P204] for the separation of europium and gadolinium. IOP Conference Series: Materials Science and Engineering, 702 (1). pp. 1-9. ISSN 1757-8981 (Print), 1757-899X (Online) https://doi.org/10.1088/1757-899X/702/1/012044 https://doi.org/10.1088/1757-899X/702/1/012044
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	QD Chemistry TN Mining engineering. Metallurgy
spellingShingle	QD Chemistry TN Mining engineering. Metallurgy Ismail, N. A. Mohd Yunus, M. Y. Abd Aziz, Mohd Aizudin Comparison of optimal solvent extraction stages between P204 and [A336][P204] for the separation of europium and gadolinium
description	This study was designed to compare between the number of extraction stages required by 2-ethylhexyl phosphoric acid mono 2-ethylhexyl ester P204 and ionic liquid-based system of [A336][P204] in a cascade counter-current extraction process for the separation of europium (Eu) and gadolinium (Gd). Eu and Gd were chosen for this study as these metals are among the strenuous due to low availability in nature and small separation factor. The value of the separation factor (β) of both extractants, was obtained from the experimental work, while other process parameters were calculated using the counter-current model developed by Xu Guangxian. Extraction of Eu using [A336][P204] was found optimum at 3.5 M of nitric acid, with organic to aqueous (O/A) ratio of 9:1, while the optimum condition for P204 was determined at 3.0 M of hydrochloric acid and 9:1 of O/A ratio. The optimized β value for P204 was identified lower (β:2.38) compared to the condition for [A336][P204] (β:3.44). In order to obtain the optimal number of separation stages, the target purity and recovery rates were set to 99.9% and 90% respectively for both extractants. From the Xu model, the results show that [A336][P204] extractant requires at a minimum of four and two extraction and scrubbing stages respectively for maintaining the desired outputs. Meanwhile, P204 extractant needs to develop at least eight extraction stages as well as five scrubbing stages to produce the same production capacity. This finding generally suggests that [A336][P204] is favorable over P204 for the separation of europium and gadolinium particularly from the viewpoint of economic interest.
format	Article
author	Ismail, N. A. Mohd Yunus, M. Y. Abd Aziz, Mohd Aizudin
author_facet	Ismail, N. A. Mohd Yunus, M. Y. Abd Aziz, Mohd Aizudin
author_sort	Ismail, N. A.
title	Comparison of optimal solvent extraction stages between P204 and [A336][P204] for the separation of europium and gadolinium
title_short	Comparison of optimal solvent extraction stages between P204 and [A336][P204] for the separation of europium and gadolinium
title_full	Comparison of optimal solvent extraction stages between P204 and [A336][P204] for the separation of europium and gadolinium
title_fullStr	Comparison of optimal solvent extraction stages between P204 and [A336][P204] for the separation of europium and gadolinium
title_full_unstemmed	Comparison of optimal solvent extraction stages between P204 and [A336][P204] for the separation of europium and gadolinium
title_sort	comparison of optimal solvent extraction stages between p204 and [a336][p204] for the separation of europium and gadolinium
publisher	IOP Publishing
publishDate	2019
url	http://umpir.ump.edu.my/id/eprint/26771/ http://umpir.ump.edu.my/id/eprint/26771/ http://umpir.ump.edu.my/id/eprint/26771/ http://umpir.ump.edu.my/id/eprint/26771/1/Comparison%20of%20optimal%20solvent%20extraction%20stages%20between%20P204%20and%20%5BA336%5D%5BP204%5D%20for%20the%20separation%20of%20europium%20and%20gadolinium.pdf
first_indexed	2023-09-18T22:41:53Z
last_indexed	2023-09-18T22:41:53Z
_version_	1777416969938534400

Comparison of optimal solvent extraction stages between P204 and [A336][P204] for the separation of europium and gadolinium

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