Properties and perspective of using deep eutectic solvents for hydrometallurgy metal recovery

Minerals Engineering, Journal Year: 2023, Volume and Issue: 203, P. 108306 - 108306

Published: Aug. 19, 2023

The rapid industrialization and energy transition, as well social pressure is increasing the current needs for metals. This results in an demand, so exploitation of more natural resources. In this scenario, a alternative to minimise lack resource recycling industrial waste by-products, such electrical electronic waste, lithium batteries, solar panels, blast furnace slag, etc. Many articles focus on recovery metals by hydrometallurgical methods are published. Currently, one great scientific challenges minimize environmental impact these methods. Deep Eutectic Solvents (DESs) emerging environmentally friendly from by-products due their greener properties. entailing number publications area. review article collects highlights relevance use solvents metal methods, showing main disadvantages its As as, possibility adjust physico-chemical properties according application.

Language: Английский

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Machine Learning Approach for the Prediction of Eutectic Temperatures for Metal-Free Deep Eutectic Solvents

ACS Sustainable Chemistry & Engineering, Journal Year: 2023, Volume and Issue: 11(42), P. 15492 - 15502

Published: Oct. 9, 2023

Deep eutectic solvents (DESs) represent an environmentally friendly alternative to conventional organic solvents. Their liquid range determines the areas of application, and therefore, prediction solid–liquid equilibrium (SLE) diagrams is essential for developing new DESs. Such predictions are not yet possible by using current state-of-the-art computational models. Herein, we present model based on support vector regression integrating experimental data, a conductor-like screening real simulations, cheminformatic descriptors predicting melting temperatures binary metal-free DESs or ionic liquids, allowing researcher estimate formation SLE specific combinations components. The was developed manually collected database 1648 mixture 237 experimentally described DESs, its accuracy demonstrated 5-fold cross-validation (R2 ∼ 0.8). presented machine learning methodology empowers researchers predefine holds promise efficient molecular combination screening, facilitating discovery tailored desired applications from catalysis extraction energy storage. By enabling deeper understanding DES behavior targeted design these solvents, proposed approach contributes advancing green chemistry practices promoting sustainable solvent usage.

Language: Английский

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Exploring deep eutectic solvents for the electrochemical and chemical synthesis of photo- and electrocatalysts for hydrogen evolution

International Journal of Hydrogen Energy, Journal Year: 2023, Volume and Issue: 48(100), P. 39823 - 39853

Published: Aug. 1, 2023

Language: Английский

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Designing Low Toxic Deep Eutectic Solvents for the Green Recycle of Lithium‐Ion Batteries Cathodes

ChemSusChem, Journal Year: 2024, Volume and Issue: 17(13)

Published: Feb. 27, 2024

The Lithium-ion battery (LIB) is one of the main energy storage equipment. Its cathode material contains Li, Co, and other valuable metals. Therefore, recycling spent LIBs can reduce environmental pollution resource waste, which significant for sustainable development. However, traditional metallurgical methods are not environmentally friendly, with high cost toxicity. Recently, concept green chemistry gives rise to efficient technology, promotes transition solvents from organic represented by deep eutectic (DESs). DESs considered as ideal alternative in extraction processes, attracting great attention due their low cost, toxicity, good biodegradability, capacity. It very important develop system development economic technology. In this work, applications research progress recovery reviewed, physicochemical properties such viscosity, toxicity regulatory summarized discussed. particular, data collected analyzed. Finally, guidance prospects future put forward, aiming explore more suitable metals batteries.

Language: Английский

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Harnessing deep eutectic solvents for advanced corrosion protection: A review

Journal of Molecular Liquids, Journal Year: 2025, Volume and Issue: unknown, P. 126919 - 126919

Published: Jan. 1, 2025

Language: Английский

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Synthesis of Green Deep Eutectic Solvents for Pretreatment Wheat Straw: Enhance the Solubility of Typical Lignocellulose

Sustainability, Journal Year: 2022, Volume and Issue: 14(2), P. 657 - 657

Published: Jan. 7, 2022

Deep eutectic solvents (DESs), a novel and environmentally-friendly solvent, have high potential for biomass pretreatment due to its advantages of low cost, toxicity, strong solubility, excellent selectivity biocompatibility. Two types DES (binary ternary) were synthesized characterized, optimized ternary was selected pretreat wheat straw enhancement the solubility lignocellulose. Moreover, enzymatic hydrolysis tested verify performance pretreatment. In addition, changes in surface morphology, structure crystallinity pretreated by analyzed reveal mechanism. Experimental results indicated that viscosity exhibited little difference different DESs, declining trend as temperature increases same DES. The efficiently enhanced typical lignocellulose, with optimal removal rate lignin at approximately 69.46%. Furthermore, total sugar concentration residue about 5.1 times more than untreated after samples hydrolyzed cellulase 24 h, indicating has unique ability selectively extract hemicellulose from while retaining cellulose, thus scanning electron microscope (SEM) observation X-ray diffraction (XRD) determination showed suffered serious erosion index increased DES5 Therefore, cleaves covalent bond between cellulose hemicellulose, reduces intractability resulting dissolution. It suggests can be used promising biocompatible way cost-effective conversion lignocellulose into biofuels.

Language: Английский

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Li-Ion Battery Cathode Recycling: An Emerging Response to Growing Metal Demand and Accumulating Battery Waste

Electronics, Journal Year: 2023, Volume and Issue: 12(5), P. 1152 - 1152

Published: Feb. 27, 2023

Due to the accumulation of waste mobile devices, increasing production electric vehicles, and development stationary energy storage systems, recycling end-of-life Li-ion batteries (EOL LIBs) has recently become an intensively emerging research field. The number LIBs produced accelerates resources’ depletion provokes pollution. To prevent this, global communities are concerned with expanding improving industry, whose biggest problems either large gaseous emissions consumption or toxic reagents low yields. These issues most likely solvable by upgrading changing core technology, introducing effective benign chemicals, reducing cathode losses. In this review, we analyze discuss various LIB approaches, emphasizing processing. After a brief introduction (LIB’s design, environmental impact, commercialized processes), technological aspects LIB’s pretreatment, sorting dissolving cathode, separation leached elements, obtaining high-purity materials. Covering whole line, proven approaches compare pyrometallurgy, hydrometallurgy, cathode’s direct restoration methods. We believe that comprehensive insight into technologies made here will accelerate their further implementation in large-scale battery industry.

Language: Английский

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Deep eutectic solvent viscosity prediction by hybrid machine learning and group contribution

Journal of Molecular Liquids, Journal Year: 2023, Volume and Issue: 388, P. 122747 - 122747

Published: Aug. 3, 2023

In this study, hybrid machine learning nonlinear models were developed to predict the viscosity of DESs by combining group contribution (GC) concept with multilayer perceptron, a well-known feedforward artificial neural network, and Least Squares Support Vector Machine (LSSVM) algorithm. Deep Eutectic Solvents (DESs) have come forefront in recent years as appealing substitutes for conventional solvents. It is imperative thorough grasp essential properties expand employment these compounds new procedures. Most frequently, one crucial physical DES that must be precisely determined its viscosity. To develop models, dataset 2533 data points 305 at various temperatures (from 277.15 373.15 K) was gathered build models. By using temperature, molar ratios, functional groups inputs, results indicate suggested can determine high accuracy. The yield average absolute relative deviations below 10% squared correlation coefficients higher than 0.98.

Language: Английский

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Natural deep eutectic solvents (NaDES) as an emerging technology for the valorisation of natural products and agro‐food residues: a review

International Journal of Food Science & Technology, Journal Year: 2023, Volume and Issue: 58(12), P. 6660 - 6673

Published: Aug. 17, 2023

Summary A review paper on the natural deep eutectic solvents (NaDES) application to extraction of bioactives from products and agri‐food wastes is introduced. NaDES are mixtures two or more compounds forming a liquid phase at room temperature based in hydrogen bond acceptors (quaternary amines, alcohols) donors (sugars, organic acids). NADES have unique properties such as low toxicity, biodegradability high solubility for wide range compounds. They represent sustainable alternative traditional variety applications, particularly metabolites extraction. Therefore, status displayed terms their inspiration nature, preparation physicochemical properties, well conditions biologically important phytochemicals alkaloids, carotenoids, phenolics (anthocyanins, isoflavonoids, curcuminoids). Remarks emerging technologies therapeutic, hydrophilic, hydrophobic systems inserted. As can be easily prepared renewable sources, they promising green food, nutraceutical, pharmaceutical industries.

Language: Английский

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Green extraction technologies: A path to the Amazon bioeconomy development

Trends in Food Science & Technology, Journal Year: 2024, Volume and Issue: 147, P. 104462 - 104462

Published: March 25, 2024

Language: Английский

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