Hydrophobic functional liquids based on trioctylphosphine oxide (TOPO) and carboxylic acids

Emily L. Byrne, Ruairi O’Donnell, Mark Gilmore, Nancy Artioli, John D. Holbrey and Małgorzata Swadźba-Kwaśny

Phys. Chem. Chem. Phys., 2020, 22, 24744
DOI: 10.1039/D0CP02605K

Separation of nickel from cobalt and manganese in lithium ion batteries using deep eutectic solvents

Dana L. Thompson, Ioanna M. Pateli, Chunhong Lei, Abbey Jarvis, Andrew P. Abbott and Jennifer M. Hartley

Green Chem., 2022, 24, 4877
DOI: 10.1039/D2GC00606E

Electrochemical oxidation as alternative for dissolution of metal oxides in deep eutectic solvents

Ioanna M. Pateli, Andrew P. Abbott, Gawen R. T. Jenkin and Jennifer M. Hartley

Green Chem., 2020, 22, 8360
DOI: 10.1039/D0GC03491F

Improved separation of rare earth elements using hydrophobic deep eutectic solvents: liquid–liquid extraction to selective dissolution

Takafumi Hanada, Nicolas Schaeffer, Masahiro Katoh, Joao A. P. Coutinho and Masahiro Goto

Green Chem., 2024, 26, 9671
DOI: 10.1039/D4GC01089B

A validated analytical method to measure metals dissolved in deep eutectic solvents

Halimeh Askari Sabzkoohi, Vicky Dodier and Georgios Kolliopoulos

RSC Adv., 2023, 13, 14887
DOI: 10.1039/D3RA02372A

Status and advances of deep eutectic solvents for metal separation and recovery

Ziwen Yuan, Hang Liu, Wai Fen Yong, Qianhong She and Jesús Esteban

Green Chem., 2022, 24, 1895
DOI: 10.1039/D1GC03851F

Selective neodymium recovery from model permanent magnets using cost-effective organic acid systems

Cristina Pozo-Gonzalo, Rabeeh Golmohammadzadeh, Munkhshur Myekhlai, Henrique Bastos, Glen B. Deacon and Anthony E. Somers

Green Chem., 2024, 26, 2740
DOI: 10.1039/D3GC04800D

A toolbox for improved recycling of critical metals and materials in low-carbon technologies

Guillaume Zante, Christopher E. Elgar, Jennifer M. Hartley, Rudra Mukherjee, Jeff Kettle, Louise E. Horsfall, Allan Walton, Gavin D. J. Harper and Andrew P. Abbott

RSC Sustainability, 2024, 2, 320
DOI: 10.1039/D3SU00390F

High-capacity adsorptive removal and recovery of trivalent europium ions using zinc-based metal–organic frameworks: Adsorption and mechanism study

Roxana Paz, Herlys Viltres, Nishesh Kumar Gupta, Carolina Leyva, Rushikesh P. Dhavale, Hyung-Ho Park, Adolfo Romero-Galarza, Amin Reza Rajabzadeh and Seshasai Srinivasan

Inorganic Chemistry Communications, 2023, 155, 111049
DOI: 10.1016/j.inoche.2023.111049

A review of the application of deep eutectic solvents for metal recovery from diverse secondary sources

Fereshteh Moradi and Francis Bougie

Journal of Molecular Liquids, 2026, 443, 128903
DOI: 10.1016/j.molliq.2025.128903

Selective Dissolution and Separation of Rare Earths Using Guanidine-Based Deep Eutectic Solvents

Qibin Yan, Chuanying Liu, Xingwang Zhang, Lecheng Lei and Chengliang Xiao

ACS Sustainable Chem. Eng., 2021, 9, 8507
DOI: 10.1021/acssuschemeng.1c01616

Deep Eutectic Solvents-Based Ultrasonic-Assisted Dispersive Liquid–Liquid Microextraction for the Determination of Organophosphorus Pesticides in Honeysuckle Dew Samples

Kangmiao Guo, Xiaokun Wu, Fan Zhang, Ying Cao, Zenglei Tan, Shuwen Xiao and Lijie Wu

Molecules, 2024, 29, 3423
DOI: 10.3390/molecules29143423

Research Progress on the Extraction and Separation of Rare-Earth Elements from Waste Phosphors

Guocai Tian, Zhongbin Xu, Xiaofen Li, Zhiqiang Hu and Baichuan Zhou

Minerals, 2025, 15, 61
DOI: 10.3390/min15010061

Tuning the Properties of Lignin‐Derived Deep Eutectic Solvents for Biomass Processing

Jiae Ryu, Keunhong Jeong, Chaehwi Yoon, Yunxuan Wang, Zitong He, Arthur J. Ragauskas, Gyu Leem, Min Bum Park, Kwang Ho Kim and Chang Geun Yoo

ChemSusChem, 2025, 18
DOI: 10.1002/cssc.202500701

Application of deep eutectic solvents (DESs) as a green lixiviant for extraction of rare earth elements from caustic-treated monazite concentrate

Ghazaleh Shakiba, Roozbeh Saneie, Hadi Abdollahi, Ehsan Ebrahimi, Ali Rezaei and Mohsen Mohammadkhani

Journal of Environmental Chemical Engineering, 2023, 11, 110777
DOI: 10.1016/j.jece.2023.110777

Electrochemically assisted leaching of rare earth carbonates in non-aqueous green solvents: Solvent design, characterization, and process optimization

Salih Cihangir

Hydrometallurgy, 2026, 239, 106599
DOI: 10.1016/j.hydromet.2025.106599

Green and effective leaching gallium in deep eutectic solvents from waste LEDs based on a novel bottom-focused microwave reaction system

Youmei Yang, Xianqiong Xu, Juan Zhang, Li Deng, Xiaoyan Ma, Huabin Xiong, Guocai Tian, Zhi Yang, Yuntao Gao and Xiaofen Li

Journal of Environmental Chemical Engineering, 2026, 14, 121993
DOI: 10.1016/j.jece.2026.121993

Critical metal extraction from spent battery cathodes and anticipated developments using next generation green solvents for achieving a net-zero future

Madhusmita Dash, Abhayjeet Kumar Dubey, Tushar Choudhary, Yong Liu, Himansu Sekhar Nanda and Soobhankar Pati

Chemical Engineering Journal, 2025, 507, 160324
DOI: 10.1016/j.cej.2025.160324

Perspectives of Using DES-Based Systems for Solid–Liquid and Liquid–Liquid Extraction of Metals from E-Waste

Rafael M. Dias, Mariana C. da Costa and Yecid P. Jimenez

Minerals, 2022, 12, 710
DOI: 10.3390/min12060710

(Deep) eutectic solvents for the separation of platinum group metals and rare earth elements: Characteristics, extraction mechanisms and state of the art

Sahar Gholami, María Pérez-Page, Carmine D’Agostino and Jesús Esteban

Chemical Engineering Journal, 2025, 505, 159497
DOI: 10.1016/j.cej.2025.159497

Dissolution of rare earth elements: Exploring the ability of deep eutectic solvents and organic acid solutions, the case of lactic acid

Julien Couturier, Clément Levard, Blanche Collin, Perrine Chaurand, Vladimir Vidal, Olivier Mathon, Adrien Duvivier, Bernard Angeletti, Daniel Borschneck, Jérôme Rose, Stéphane Pellet-Rostaing and Guilhem Arrachart

Separation and Purification Technology, 2025, 366, 132740
DOI: 10.1016/j.seppur.2025.132740

Fast and Greener Ultrasound-Assisted Acid Extraction for the Determination of Potentially Toxic Elements in Fluorescent Lamp Waste Using ICP OES

Vitor Busto Duarte, Felippe Ceraso Gonçalves, Júlia Concordido Guimarães, Bernardo Ferreira Braz, Manuel Castro Carneiro, Ricardo Erthal Santelli, Jéssica Frontino Paulino and Fernanda Veronesi Marinho Pontes

Journal of AOAC International, 2024, 107, 790
DOI: 10.1093/jaoacint/qsae055

Utilizing deep eutectic solvent for facile, selective and sustainable sequestration of plutonium

Sushil Patil, Sumana Paul, Ruma Gupta, Rama MohanaRao Dumpala and Preeti G. Goswami

Separation and Purification Technology, 2023, 318, 123923
DOI: 10.1016/j.seppur.2023.123923

Metal extraction using deep eutectic solvents for metal recovery and environmental remediation – A review

Chongqing Wang, Zhenxing Zhou, Xiuxiu Zhang, Hui Guo and Grzegorz Boczkaj

Separation and Purification Technology, 2025, 364, 132533
DOI: 10.1016/j.seppur.2025.132533

Leaching of valuable metals from cathode active materials in spent lithium-ion batteries by levulinic acid and biological approaches

Tao Jiang, Qiantao Shi, Zheng Wei, Kevin Shah, Haralabos Efstathiadis, Xiaoguang Meng and Yanna Liang

Heliyon, 2023, 9, e15788
DOI: 10.1016/j.heliyon.2023.e15788

Integrated Process for Recovery of Rare-Earth Elements from Lamp Phosphor Waste Using Methanesulfonic Acid

Nerea Rodriguez Rodriguez, Brent Grymonprez and Koen Binnemans

Ind. Eng. Chem. Res., 2021, 60, 10319
DOI: 10.1021/acs.iecr.1c01429

New hydrophobic DES based on tri–n-octylphosphine oxide and dicarboxylic acids: synthesis, spectroscopy and liquid–liquid extraction of actinides

Asmita Kshirsagar, P. K. Verma and M. S. Murali

J Radioanal Nucl Chem, 2021, 330, 1053
DOI: 10.1007/s10967-021-07994-4

Neoteric Solvents for Rare Earths Processing: Perspectives on the Potential of Ionic Liquids and Deep Eutectic Solvents From a Bibliometric Analysis

Cesia Molina, Esteban Quijada-Maldonado, Julio Romero and Ricardo Abejón

Solvent Extraction and Ion Exchange, 2024, 42, 469
DOI: 10.1080/07366299.2024.2438700

Application of Ionic Liquids for the Recycling and Recovery of Technologically Critical and Valuable Metals

Grace Inman, Ikenna C. Nlebedim and Denis Prodius

Energies, 2022, 15, 628
DOI: 10.3390/en15020628

Deep Eutectic Solvent (TOPO/D2EHPA/Menthol) for Extracting Metals from Synthetic Hydrochloric Acid Leachates of NMC-LTO Batteries

Arina V. Kozhevnikova, Nikita A. Milevskii, Dmitriy V. Lobovich, Yulia A. Zakhodyaeva and Andrey A. Voshkin

Metals, 2024, 14, 1441
DOI: 10.3390/met14121441

Vegetable Oils Based Ionic Liquids for Rare Earth Elements Recovery: A Techno-Economic Analysis

Karina Mulya Rizky, Ahmad Mudzakir and Asep Bayu Dani Nandiyanto

KEM, 2022, 920, 122
DOI: 10.4028/p-b1dlov

Optimizing Leaching of Rare Earth Elements from Red Mud and Spent Fluorescent Lamp Phosphors Using Levulinic Acid

Tao Jiang, Sarabjot Singh, Kathleen A. Dunn and Yanna Liang

Sustainability, 2022, 14, 9682
DOI: 10.3390/su14159682

Ionic Liquids and Deep-Eutectic Solvents in Extractive Metallurgy: Mismatch Between Academic Research and Industrial Applicability

Koen Binnemans and Peter Tom Jones

J. Sustain. Metall., 2023, 9, 423
DOI: 10.1007/s40831-023-00681-6

Silver Recovery from E-Waste Printed Circuit Board Using Binary and Ternary Deep Eutectic Solvents

Arrizal Abdul Aziz, Abraham Mora, Soja Siti Fatimah, Omay Sumarna, Hufaidatul Azfa Nurusyifa, Sheren Hana Elia and Ira Kamilia Siti Huwaidah

J. Kim. Sains Apl., 2024, 27, 64
DOI: 10.14710/jksa.27.2.64-71

Spectroscopic Study into Lanthanide Speciation in Deep Eutectic Solvents

James T. M. Amphlett, Yunu Lee, Wonseok Yang, Dokyu Kang, Nark-Eon Sung, Jaeyeong Park, Euo Chang Jung and Sungyeol Choi

ACS Omega, 2022, 7, 921
DOI: 10.1021/acsomega.1c05386

Deep eutectic solvents in separations: Methods of preparation, polarity, and applications in extractions and capillary electrochromatography

Muhammad Qamar Farooq, Nabeel Mujtaba Abbasi and Jared L. Anderson

Journal of Chromatography A, 2020, 1633, 461613
DOI: 10.1016/j.chroma.2020.461613

Dissolution of Metal Oxides in a Choline Chloride–Sulphosalicylic Acid Deep Eutectic Solvent

I. V. Zinov’eva, A. Ya. Fedorov, N. A. Milevskii, Yu. A. Zakhodyaeva and A. A. Voshkin

Theor Found Chem Eng, 2021, 55, 663
DOI: 10.1134/S0040579521040370

Non-aqueous pathways for rare earth element recovery from NdFeB magnets

Soroush Rahmati

Journal of Environmental Chemical Engineering, 2026, 14, 120983
DOI: 10.1016/j.jece.2025.120983

Simple and environmentally friendly metal recovery from waste printed circuit boards by using deep eutectic solvents

Qi Zhao, Shengshou Ma, Wanghoe Ho, Yixuan Wang, Jaden Yuen Tao Ho and Kaimin Shih

Journal of Cleaner Production, 2023, 421, 138508
DOI: 10.1016/j.jclepro.2023.138508

Novel closed-loop recovery of light rare earth elements, as their oxides, from end-of-life mobile phone speakers using [Hbet][Tf2N]

Moisés Gómez, Sue Grimes, Danial Bin-Jamaludin and Geoff Fowler

Journal of Environmental Chemical Engineering, 2023, 11, 111001
DOI: 10.1016/j.jece.2023.111001

Dissolution of rare-earth elements (Nd, Dy and Pr) in end-of-life neodymium magnet by an ultrasound-assisted electrochemical process

Muwafaq A. Rabeea, Christopher E. Elgar, Jennifer M. Hartley, Allan Walton, Andrew P. Abbott and Jake M. Yang

Electrochimica Acta, 2025, 543, 147579
DOI: 10.1016/j.electacta.2025.147579

Levulinic acid as a sustainable and selective leaching agent for hydrometallurgical recycling of commercial Li-ion batteries: Towards greener critical metal recovery

Karolina Charzewska, Jakub Adamek, Filip Kateusz, Jędrzej Piątek and Wojciech Zając

Separation and Purification Technology, 2026, 380, 135196
DOI: 10.1016/j.seppur.2025.135196

Deep eutectic solvents (DESs) for chalcopyrite concentrate extraction: Leaching, optimization and kinetics mechanism

Hamid Reza Shiri, Mohammad Mokmeli, Seyed Mojtaba Ghadamgahi and Abolfazl Babakhani

Journal of Environmental Chemical Engineering, 2025, 13, 117779
DOI: 10.1016/j.jece.2025.117779

Deep eutectic solvents as an emerging sustainable solvent for the separation and recovery of rare earth elements: current challenges and future prospectives

Huma Warsi Khan, Berihun Mamo Negash, Nur Insyirah Zulkifli, Mohd Dzul Hakim Wizral, Ainul Hakeem Abdul Jamil, Santosh Mishra, Afifah Azmi and Chrisminder Dain

Minerals Engineering, 2026, 237, 110051
DOI: 10.1016/j.mineng.2025.110051

Rapid Spectrometer-Free Luminescence-Based Detection of Tb3+ and Eu3+ in Aqueous Solution for Recovery and Urban Mining

Alexander E. Sedykh, Jonas J. Pflug, Thomas C. Schäfer, Robin Bissert, Dirk G. Kurth and Klaus Müller-Buschbaum

ACS Sustainable Chem. Eng., 2022, 10, 5101
DOI: 10.1021/acssuschemeng.1c07806

Recovery of Rare Earth Elements (REEs) Using Ionic Solvents

Guilhem Arrachart, Julien Couturier, Sandrine Dourdain, Clément Levard and Stéphane Pellet-Rostaing

Processes, 2021, 9, 1202
DOI: 10.3390/pr9071202

Generalized Pitzer-Debye-Hückel (PDH) Framework for the Deep Eutectic Solvent Assisted Extraction of Europium (III), Americium (III), and Uranium (VI)

Dev K. Patra, Aradhana V. Thombre and Debashis Kundu

Solvent Extraction and Ion Exchange, 2024, 42, 78
DOI: 10.1080/07366299.2023.2293688

Recent Advances in Rare Earth Element Recovery: Liquid–Liquid Extraction and Magnetophoretic Separation

Bailey Lake, Theo Siegrist, Thomas E. Albrecht, Hadi Mohammadigoushki, Munir Humayun and Jamel Ali

Ind. Eng. Chem. Res., 2025, 64, 19781
DOI: 10.1021/acs.iecr.5c02137

Sustainable valorisation of industrial residues as an enabler for achieving the goals of the EU Green Deal: European Training Network SOCRATES

I. Korolev, K. Yliniemi and M. Lundström

Transactions of the IMF, 2021, 99, 110
DOI: 10.1080/00202967.2021.1898184

Toward Expanding the Utilisation of Deep Eutectic Solvents: Rare Earth Recovery from Primary Ores and Process Tailings

K. Yamini, Laurence G. Dyer, Bogale Tadesse and Richard D. Alorro

Clean Technol., 2025, 7, 111
DOI: 10.3390/cleantechnol7040111

Continuous Evolution of Calmodulin for High‐Purity Separation of Rare Earth Elements

Farid F. Khoury, Sameera Abeyarthna, Mallori A Herishko, Xinyue Hu, Wei Wang, Piyush Kumar, Daniel A Dailey, Bradley S. Heater, Katarzyna H. Kucharzyk and Scott Banta

Angewandte Chemie, 2026, 138
DOI: 10.1002/ange.202514785

Application of Ionic Liquids and Deep Eutectic Solvents as Green Solvents in the Extraction and Separation of Rare Earths

Wenjuan Deng, Ranran Geng, Zhiqiang Hu, Baichuan Zhou, Yuanyuan Zhao, Jianlei Wang and Guocai Tian

J. Sustain. Metall., 2025, 11, 3424
DOI: 10.1007/s40831-025-01289-8

Comparison of extraction abilities of deep eutectic solvents and aqueous acid solutions for extraction of rare earths and transition metals

Svetlana Drogobuzhskaya, Margarita Frolova, Andrey Shishov and Nikita Tsvetov

Journal of Rare Earths, 2024, 42, 1157
DOI: 10.1016/j.jre.2023.06.014

Insights on the solvation of toluene by deep eutectic solvents

Tarek Moufawad, Abdenacer Idrissi, Margarida Costa Gomes and Sophie Fourmentin

Journal of Molecular Liquids, 2024, 402, 124753
DOI: 10.1016/j.molliq.2024.124753

A critical review of end-of-life fluorescent lamps recycling for recovery of rare earth values

Nikhil Dhawan and Himanshu Tanvar

Sustainable Materials and Technologies, 2022, 32, e00401
DOI: 10.1016/j.susmat.2022.e00401

The effect of increasing water content on transition metal speciation in deep eutectic solvents

J.T.M. Amphlett and Sungyeol Choi

Journal of Molecular Liquids, 2021, 332, 115845
DOI: 10.1016/j.molliq.2021.115845

Deep eutectic solvents: Physico-chemical properties and their use for recovery of metal values from waste products

Pratyasha Panda and Sujata Mishra

Journal of Molecular Liquids, 2023, 390, 123070
DOI: 10.1016/j.molliq.2023.123070

Continuous Evolution of Calmodulin for High‐Purity Separation of Rare Earth Elements

Farid F. Khoury, Sameera Abeyarthna, Mallori A Herishko, Xinyue Hu, Wei Wang, Piyush Kumar, Daniel A Dailey, Bradley S. Heater, Katarzyna H. Kucharzyk and Scott Banta

Angew Chem Int Ed, 2026, 65
DOI: 10.1002/anie.202514785

Deep eutectic solvents for separation and purification applications in critical metal metallurgy: Recent advances and perspectives

Shuo Chen, Shengpeng Su, Yanfang Huang, Bingbing Liu, Hu Sun, Shuzhen Yang and Guihong Han

Int J Miner Metall Mater, 2025, 32, 1
DOI: 10.1007/s12613-024-2923-7

Solvometallurgical recycling of spent LiNixCoyMnzO2 (NCM) cathode material using ternary choline chloride-ethylene glycol-p-toluenesulfonic acid deep eutectic solvent

Ehsan Ebrahimi, Mehrdad Kordloo, Gholamreza Khodadadmahmoudi, Ali Rezaei, Mohammadreza Ganjali and Gisele Azimi

Hydrometallurgy, 2023, 222, 106184
DOI: 10.1016/j.hydromet.2023.106184