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Recovery of boron from brines with high magnesium content by solvent extraction using aliphatic alcohol

The recovery of boron from salt lake brines has become an effective way to meet the increasing demand, particularly in China. In this study, nine commercially available monohydric alcohols with different structures were selected for boron extraction from a salt lake brine with high magnesium content...

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Autores principales: Xu, Zhenya, Su, Hui, Zhang, Jian, Liu, Wensen, Zhu, Zhaowu, Wang, Jinggang, Chen, Jing, Qi, Tao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9031098/
https://www.ncbi.nlm.nih.gov/pubmed/35481179
http://dx.doi.org/10.1039/d1ra01906f
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author Xu, Zhenya
Su, Hui
Zhang, Jian
Liu, Wensen
Zhu, Zhaowu
Wang, Jinggang
Chen, Jing
Qi, Tao
author_facet Xu, Zhenya
Su, Hui
Zhang, Jian
Liu, Wensen
Zhu, Zhaowu
Wang, Jinggang
Chen, Jing
Qi, Tao
author_sort Xu, Zhenya
collection PubMed
description The recovery of boron from salt lake brines has become an effective way to meet the increasing demand, particularly in China. In this study, nine commercially available monohydric alcohols with different structures were selected for boron extraction from a salt lake brine with high magnesium content. Passing through the optimization, isodecanol was finally selected for the detailed study on boron recovery from brine due to its moderate viscosity, lower solubility water entrainment and high extraction efficiency. Parameter effects on boron extraction were systematically studied, including equilibrium pH, organic concentration, phase ratio, temperature, and salting-out effect. A McCabe–Thiele diagram was established to determine the boron extraction and stripping stages. An organic solution containing 2.5 mol L(−1) isodecanol was used for a simulated three-stage counter-current extraction test under optimized extraction conditions, and the boron extraction reached 99.07%. A simulated four-stage counter-current stripping test was carried out with water with the stripping efficiency of 98.71%. In total the boron recovery reached 97.79%. Additionally, the mechanism of boron extraction by isodecanol was investigated using both slope analysis method and Fourier transform infrared spectroscopy (FTIR). The stoichiometric ratio of isodecanol to boron required to form boric acid ester was found to be 1.268. These results indicate that the extraction system has great potential for commercial application in boron recovery from salt lake brines with high magnesium content.
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spelling pubmed-90310982022-04-26 Recovery of boron from brines with high magnesium content by solvent extraction using aliphatic alcohol Xu, Zhenya Su, Hui Zhang, Jian Liu, Wensen Zhu, Zhaowu Wang, Jinggang Chen, Jing Qi, Tao RSC Adv Chemistry The recovery of boron from salt lake brines has become an effective way to meet the increasing demand, particularly in China. In this study, nine commercially available monohydric alcohols with different structures were selected for boron extraction from a salt lake brine with high magnesium content. Passing through the optimization, isodecanol was finally selected for the detailed study on boron recovery from brine due to its moderate viscosity, lower solubility water entrainment and high extraction efficiency. Parameter effects on boron extraction were systematically studied, including equilibrium pH, organic concentration, phase ratio, temperature, and salting-out effect. A McCabe–Thiele diagram was established to determine the boron extraction and stripping stages. An organic solution containing 2.5 mol L(−1) isodecanol was used for a simulated three-stage counter-current extraction test under optimized extraction conditions, and the boron extraction reached 99.07%. A simulated four-stage counter-current stripping test was carried out with water with the stripping efficiency of 98.71%. In total the boron recovery reached 97.79%. Additionally, the mechanism of boron extraction by isodecanol was investigated using both slope analysis method and Fourier transform infrared spectroscopy (FTIR). The stoichiometric ratio of isodecanol to boron required to form boric acid ester was found to be 1.268. These results indicate that the extraction system has great potential for commercial application in boron recovery from salt lake brines with high magnesium content. The Royal Society of Chemistry 2021-04-30 /pmc/articles/PMC9031098/ /pubmed/35481179 http://dx.doi.org/10.1039/d1ra01906f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Xu, Zhenya
Su, Hui
Zhang, Jian
Liu, Wensen
Zhu, Zhaowu
Wang, Jinggang
Chen, Jing
Qi, Tao
Recovery of boron from brines with high magnesium content by solvent extraction using aliphatic alcohol
title Recovery of boron from brines with high magnesium content by solvent extraction using aliphatic alcohol
title_full Recovery of boron from brines with high magnesium content by solvent extraction using aliphatic alcohol
title_fullStr Recovery of boron from brines with high magnesium content by solvent extraction using aliphatic alcohol
title_full_unstemmed Recovery of boron from brines with high magnesium content by solvent extraction using aliphatic alcohol
title_short Recovery of boron from brines with high magnesium content by solvent extraction using aliphatic alcohol
title_sort recovery of boron from brines with high magnesium content by solvent extraction using aliphatic alcohol
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9031098/
https://www.ncbi.nlm.nih.gov/pubmed/35481179
http://dx.doi.org/10.1039/d1ra01906f
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