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Metals
Special Issues
Advances in Sustainable Hydrometallurgy
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Advances in Sustainable Hydrometallurgy

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Extractive Metallurgy".

Deadline for manuscript submissions: closed (20 April 2024) | Viewed by 1166

Special Issue Editor

Dr. Shengting Kuang

E-Mail Website
Guest Editor
Institute of Material and Chemistry, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China
Interests: separation; purification

Special Issue Information

Dear Colleagues,

With the depletion of strategic metal resources, it makes a huge sense for their sustainable separation and utilization with more efficient and economy techniques. Please consider submitting some of your excellent work in a Special Issue of Metals devoted to aspects of sustainable hydrometallurgy. This also includes green and low-carbon hydrometallurgy process along with newly synthesized separation materials, recycling and re-utilization of waste resources with green, harmless and economical process. Possible topics include quantum chemistry calculations, thermodynamics, kinetics, surface and interface chemistry, liquid-solid separations, liquid-liquid separations, purification, solvent extraction, ion exchange, adsorption, precipitation, electrosorption technique and magnetic adsorption separation technology. Suggested application areas are in rare earth, thorium, uranium, gold, silver, palladium, platinum, ruthenium copper, cobalt, nickel, lithium, gallium, germanium, indium, etc., Both primary and recycled aspects will be considered. Thank you.

Dr. Shengting Kuang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sustainable
  • green
  • low-carbon
  • separation
  • purification
  • recycling

Published Papers (1 paper)

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Research

15 pages, 4891 KiB  
Article
Efficient Recovery of Lithium from Spent Lithium Ion Batteries Effluent by Solvent Extraction Using 2-Ethylhexyl Hydrogen {[Bis(2-Ethylhexyl) Amino]methyl} Phosphonate Acid
by Xiaoqin Wang, Zhulin Zhou, Xuting Si, Youcai Lu and Qingchao Liu
Metals 2024, 14(3), 345; https://doi.org/10.3390/met14030345 - 17 Mar 2024
Viewed by 906
Abstract
In order to overcome the interface emulsification problem of TBP-FeCl3 systems and the instability of β-diketone systems in high-concentration alkaline medium, it is necessary to design and synthesize some new extractants. By introducing amino groups into a phosphorus extractant, a new 2-ethylhexyl [...] Read more.
In order to overcome the interface emulsification problem of TBP-FeCl3 systems and the instability of β-diketone systems in high-concentration alkaline medium, it is necessary to design and synthesize some new extractants. By introducing amino groups into a phosphorus extractant, a new 2-ethylhexyl hydrogen {[bis(2-ethylhexyl)amino]methyl} phosphonate acid (HA) extractant was synthesized. In this study, an efficient method of recovering lithium from the effluent of spent lithium-ion batteries (LIBs) is proposed. Experiments were conducted to assess the influential factors in lithium recovery, including the solution pH, saponification degree, extractant concentration, and phase ratio. Over 95% of lithium in the effluent was extracted into the organic phase, and nearly all lithium in the organic phase could be stripped into the aqueous phase using a 3 mol/L HCl solution. There was no significant decrease in extraction capacity after 10 cycles. The experimental results indicated that the extraction mechanism was a cation exchange process, and the extractive complex was proposed as LiA. Importantly, after three months of stable operation, the process demonstrated excellent stability and extraction efficiency, with rapid phase separation and a clear interface. This study offers an efficient, cost-effective, and environmentally friendly method for lithium extraction from the effluent of spent LIBs. Full article
(This article belongs to the Special Issue Advances in Sustainable Hydrometallurgy)
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