Enhanced extraction of Mn (II) and mass transfer characteristics in reciprocating cavity squeezing microchannel

Article Chemistry, Physical

Direct recovery: A sustainable recycling technology for spent lithium-ion battery

Jiawei Wu et al.

Summary: This review summarizes the steps and strategies for recycling spent lithium-ion batteries (LIBs) and discusses the impact of degradation mechanisms of electrode materials on the selection of regeneration strategies.

ENERGY STORAGE MATERIALS (2023)

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Article Engineering, Chemical

Mass transfer characteristics of vanadium species on the high-efficient solvent extraction of vanadium in microchannels/microreactors

Jiawei Wen et al.

Summary: This paper investigates the mass transfer characteristics of metal species using microfluidic technology. The study reveals that smaller vanadium species show lower interfacial disturbance degree, while larger vanadium species exhibit better migration capability on the liquid-liquid interface. Different reaction systems and flow rates determine different flow patterns. This research contributes to the understanding of mass transfer at the molecular level.

SEPARATION AND PURIFICATION TECHNOLOGY (2023)

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Review Engineering, Chemical

Review on comprehensive recycling of spent lithium-ion batteries: A full component utilization process for green and sustainable production

Si-qi Jiang et al.

Summary: This study systematically analyzes the recycling technologies for spent lithium-ion batteries (LIBs) in recent years, summarizing them under the two main aspects of pretreatment and deep treatment. Based on the advantages of the described technology, a clean and efficient recovery process for spent LIBs is proposed for sustainable purposes.

SEPARATION AND PURIFICATION TECHNOLOGY (2023)

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Article Engineering, Chemical

Mass transfer mechanism of the multivariate consecutive extraction process of pectin and hesperidin from Citrus aurantium L.: Kinetics, thermodynamics, diffusion and mass transfer coefficients

Peng Zhou et al.

Summary: In this study, it was found that the extraction efficiency of hesperidin from FAI could be significantly improved by the prior extraction of pectin. The mass transfer mechanism of the extraction process was further investigated, and it was confirmed that the mass transfer was strengthened by the priority extraction of pectin. The results also showed that the activation energy of hesperidin extraction was lower in the multivariate consecutive extraction process compared to the single extraction process.

SEPARATION AND PURIFICATION TECHNOLOGY (2023)

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Article Engineering, Chemical

Effect of lithium ion on the separation of electrode materials in spent lithium ion batteries using froth flotation

Luis Verdugo et al.

Summary: There is a pressing need for the development of a recycling process for spent Lithium-Ion Batteries (LIBs). Froth flotation is considered a cost-effective method for separating graphite from lithium metal oxides, but soluble lithium has been found to significantly affect the separation efficiency.

SEPARATION AND PURIFICATION TECHNOLOGY (2023)

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Article Green & Sustainable Science & Technology

Life cycle assessment of recycled NiCoMn ternary cathode materials prepared by hydrometallurgical technology for power batteries in China

Shiwei Du et al.

Summary: This study presents a life cycle assessment of recycled NCM ternary cathode materials produced from spent batteries in China. The results show that the environmental impacts of the leaching and extraction process can be effectively reduced through process optimization. The production of recycled NCM materials consumes less energy and has reduced environmental impact compared to virgin NCM materials.

JOURNAL OF CLEANER PRODUCTION (2022)

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Article Green & Sustainable Science & Technology

An advanced strategy of ?metallurgy before sorting? for recycling spent entire ternary lithium-ion batteries

Cheng Yang et al.

Summary: A closed-loop process was developed for recycling spent entire ternary lithium-ion batteries, and systematic research was conducted. The proposed process simplifies the pretreatment, solution purification and solvent extraction process, greatly reduces waste residue production and improves the recovery rate of valuable metals. The whole process realizes the environmentally-friendly and efficient recovery of full components from spent entire ternary lithium-ion batteries.

JOURNAL OF CLEANER PRODUCTION (2022)

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Article Energy & Fuels

Overview of recent trends in microchannels for heat transfer and thermal management applications

Mohammad Harris et al.

Summary: This study investigates recent research and experimental trends in microchannels for heat transfer and thermal management applications through a novel framework. The qualitative analysis reveals that enhanced microchannel heat transfer performance can be achieved through the use of asymmetrical barriers, pin-fins, non-conventional geometries, mixed-wettability/biphilic surfaces, hybrid/silver nanofluids, and innovative experimental and analysis methods. The study also emphasizes the importance of new microchannel designs and flow boiling/phase change experiments to better understand the physics and effects caused by various parameters.

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION (2022)

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Article Engineering, Chemical

Enhanced solvent extraction in a serial converging-diverging microchannel at high injection ratio

Xue-hui Ge et al.

Summary: A microchannel inspired by porous structures of rock was designed to enhance cross-interfacial mass transfer of two-phase flow at a high phase injection ratio. Experimental results showed that the design can increase mass transfer coefficient by approximately four times compared to classic microchannel design. The retention of dispersed fluid and deformation and dispersal of droplets play critical roles in the improved performance.

CHEMICAL ENGINEERING SCIENCE (2022)

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Article Green & Sustainable Science & Technology

Preprocessing of spent lithium-ion batteries for recycling: Need, methods, and trends

Hayder Ali et al.

Summary: This paper reviews the major preprocessing methods for recycling spent lithium-ion batteries (LIBs) and provides insights into the state-of-the-art recycling process worldwide. It also offers policy recommendations to enable sustainable recycling of LIBs.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2022)

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Review Engineering, Environmental

A review on recycling of lithium-ion batteries to recover critical metals

Gautam Mishra et al.

Summary: This article focuses on metal recovery from spent LIBs by utilizing various recycling routes, including conventional hydrometallurgy and pyrometallurgy methods, as well as modern trends like pyro-hydrometallurgy and bio-metallurgy. The structured discussion highlights the extraction routes, sorting, pre-treatment, and processes employed in metal recovery. Various leaching and recovery processes are illustrated to provide a holistic idea of material recycling, with a review of published works in the past two decades on recovering metals such as lithium and cobalt from spent LIBs.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2022)

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Article Engineering, Chemical

Study of multiphase flow inside straight and spiral microchannel and effect of two phase flow on Dean's vortices

Shilpi Chatterjee et al.

Summary: An experimental and numerical simulation study of gas-liquid two-phase flow inside straight and spiral microchannels is presented, showing the influence of centrifugal force on Taylor bubble dynamics in spiral channels. The effect of gas-liquid flow ratio and hydrophobicity of channel wall on bubble formation was investigated, and the formation of Dean's vortices inside spiral microchannels was demonstrated through 3D CFD simulations. The presence of Dean's vortices in such microchannels can have potential applications in futuristic micro contrivances.

CHEMICAL ENGINEERING RESEARCH & DESIGN (2021)

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Article Engineering, Chemical

Intensified extraction and separation of zinc from cadmium and manganese by a slug flow capillary microreactor

Dong Zhang et al.

Summary: The selective extraction of zinc from sulphate effluents containing zinc, cadmium, and manganese was elaborately investigated using liquid-liquid extraction with a capillary microreactor operating in the slug flow regime. The separation of zinc from cadmium and manganese was significantly enhanced by controlling the residence time and mixture velocity in the capillary microreactor. High kLa of zinc and low kLa of cadmium and manganese were responsible for the significant separation performance in the slug flow microfluidic system.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

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Article Engineering, Chemical