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Comparison of the Mg(2+)-Li(+) Separation of Different Nanofiltration Membranes

Nanofiltration application for the separation of Mg(2+)-Li(+) from salt-lake brines was attempted in the present work. Four different nanofiltration membranes identified in the manuscript as DL, DK, NF-270, and NF-90 were used to treat salt brine with a magnesium to lithium ratio (MLR) of 61, additi...

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Autores principales: Li, Tingting, Liu, Yueyu, Srinivasakannan, Chandrasekar, Jiang, Xiaobin, Zhang, Ning, Zhou, Guoli, Yin, Shaohua, Li, Shiwei, Zhang, Libo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10535561/
https://www.ncbi.nlm.nih.gov/pubmed/37755175
http://dx.doi.org/10.3390/membranes13090753
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author Li, Tingting
Liu, Yueyu
Srinivasakannan, Chandrasekar
Jiang, Xiaobin
Zhang, Ning
Zhou, Guoli
Yin, Shaohua
Li, Shiwei
Zhang, Libo
author_facet Li, Tingting
Liu, Yueyu
Srinivasakannan, Chandrasekar
Jiang, Xiaobin
Zhang, Ning
Zhou, Guoli
Yin, Shaohua
Li, Shiwei
Zhang, Libo
author_sort Li, Tingting
collection PubMed
description Nanofiltration application for the separation of Mg(2+)-Li(+) from salt-lake brines was attempted in the present work. Four different nanofiltration membranes identified in the manuscript as DL, DK, NF-270, and NF-90 were used to treat salt brine with a magnesium to lithium ratio (MLR) of 61, additionally contaminated by the other ions such as Na(+), K(+), Ca(2+), etc. The effect of the dilution factor, operating pressure, circulation rate, and feed pH were assessed to identify the optimal operating conditions for each membrane based on the retention efficiency of each ion. The results showed an insignificant effect of Ca(2+) on the retention performance of Mg(2+)-Li(+). Na(+) and K(+) had a smaller hydration radius and larger diffusion coefficient, which competed with Li(+) and altered the separation of Mg(2+)-Li(+). Under the optimal conditions (dilution factor: 40; operating pressure: 1.2 MPa; circulation flow rate: 500 L/h; pH: 7), the retention efficiency of lithium was as low as 5.17%, separation factor (SF) was as low as 0.074, and the MLR in the permeate reduced to 0.088.
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spelling pubmed-105355612023-09-29 Comparison of the Mg(2+)-Li(+) Separation of Different Nanofiltration Membranes Li, Tingting Liu, Yueyu Srinivasakannan, Chandrasekar Jiang, Xiaobin Zhang, Ning Zhou, Guoli Yin, Shaohua Li, Shiwei Zhang, Libo Membranes (Basel) Article Nanofiltration application for the separation of Mg(2+)-Li(+) from salt-lake brines was attempted in the present work. Four different nanofiltration membranes identified in the manuscript as DL, DK, NF-270, and NF-90 were used to treat salt brine with a magnesium to lithium ratio (MLR) of 61, additionally contaminated by the other ions such as Na(+), K(+), Ca(2+), etc. The effect of the dilution factor, operating pressure, circulation rate, and feed pH were assessed to identify the optimal operating conditions for each membrane based on the retention efficiency of each ion. The results showed an insignificant effect of Ca(2+) on the retention performance of Mg(2+)-Li(+). Na(+) and K(+) had a smaller hydration radius and larger diffusion coefficient, which competed with Li(+) and altered the separation of Mg(2+)-Li(+). Under the optimal conditions (dilution factor: 40; operating pressure: 1.2 MPa; circulation flow rate: 500 L/h; pH: 7), the retention efficiency of lithium was as low as 5.17%, separation factor (SF) was as low as 0.074, and the MLR in the permeate reduced to 0.088. MDPI 2023-08-24 /pmc/articles/PMC10535561/ /pubmed/37755175 http://dx.doi.org/10.3390/membranes13090753 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Li, Tingting
Liu, Yueyu
Srinivasakannan, Chandrasekar
Jiang, Xiaobin
Zhang, Ning
Zhou, Guoli
Yin, Shaohua
Li, Shiwei
Zhang, Libo
Comparison of the Mg(2+)-Li(+) Separation of Different Nanofiltration Membranes
title Comparison of the Mg(2+)-Li(+) Separation of Different Nanofiltration Membranes
title_full Comparison of the Mg(2+)-Li(+) Separation of Different Nanofiltration Membranes
title_fullStr Comparison of the Mg(2+)-Li(+) Separation of Different Nanofiltration Membranes
title_full_unstemmed Comparison of the Mg(2+)-Li(+) Separation of Different Nanofiltration Membranes
title_short Comparison of the Mg(2+)-Li(+) Separation of Different Nanofiltration Membranes
title_sort comparison of the mg(2+)-li(+) separation of different nanofiltration membranes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10535561/
https://www.ncbi.nlm.nih.gov/pubmed/37755175
http://dx.doi.org/10.3390/membranes13090753
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