A Critical Review On Heavy Metals Removal Using Ionic Liquid Membranes From The Industrial Wastewater

Imdad, Sameer; Dohare, Rajeev Kumar

doi:10.1016/j.cep.2022.108812

Cited by 54 publications

(18 citation statements)

References 112 publications

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“…However, there still exist several research gaps that require further investigation. One of such gaps is development of more efficient and selective separation processes via membranes, such as removal of toxic heavy metals or CO 2 separation . To address these challenges which can be one of the barriers for commercialization, stabilizing solvents (liquids) into membranes, which result in SLMs is the most popular method to achieve better selectivity and efficiency .…”

Section: Research Gaps In Slmsmentioning

confidence: 99%

An Overview of Practical Aspects of the Design and Application of Polymeric/Ceramic Supports in Supported Liquid Membranes for Gas Separation

Faramarzi

Arzani

Khosravanian

et al. 2023

Ind. Eng. Chem. Res.

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The idea of establishing faster/facilitated transport through liquid membranes (LMs) is both theoretically fascinating and promising for applications. One of the most selective, along with lots of desirable promising forms of LMs, is supported liquid membranes (SLMs). Since the introduction of the idea of SLMs a few decades ago, research activities in this sector have been continuously increased. Through a comprehensive analysis of the current state of the art, this review demonstrates the design and application considerations that must be made when determining whether to employ polymeric or ceramic supports in SLMs for gas separation. Following a thorough analysis of the principles of LMs, including their chronology, transport mechanism, and advantages and disadvantages are presented. The various configurations suggested up to date, their road from the laboratory to practical implementation, and their performance are discussed. Finally, potential challenges and opportunities are outlined.

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Section: Research Gaps In Slmsmentioning

confidence: 99%

An Overview of Practical Aspects of the Design and Application of Polymeric/Ceramic Supports in Supported Liquid Membranes for Gas Separation

Faramarzi

Arzani

Khosravanian

et al. 2023

Ind. Eng. Chem. Res.

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“…Perhaps the most attractive feature of ILs for ED Li recovery is that they can be customized with pre-selected characteristics such as high thermal stability, moisture stability, and ion selectivity, by careful selection of the cation and anion (Seddon et al, 2000;Seddon et al, 2002;Deetlefs et al, 2006;Zavahir et al, 2021). ILMs have successfully been used for critical and heavy metals from aqueous solutions (Chen and Chen, 2016;Makanyire et al, 2016;Zante et al, 2019;Imdad and Dohare, 2022). The high permselectivity, separation efficiency, and low energy consumption demonstrated in previous studies support the integration of ILMS into the ED process for Li recovery from high Mg 2+ /Li + and low Li + concentration solutions.…”

Section: Ionic Liquid Membrane Electrodialysismentioning

confidence: 99%

A review of technologies for direct lithium extraction from low Li+ concentration aqueous solutions

Murphy

Haji

2022

Front. Chem. Eng.

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Under the Paris Agreement, established by the United Nations Framework Convention on Climate Change, many countries have agreed to transition their energy sources and technologies to reduce greenhouse gas emissions to levels concordant with the 1.5°C warming goal. Lithium (Li) is critical to this transition due to its use in nuclear fusion as well as in rechargeable lithium-ion batteries used for energy storage for electric vehicles and renewable energy harvesting systems. As a result, the global demand for Li is expected to reach 5.11 Mt by 2050. At this consumption rate, the Li reserves on land are expected to be depleted by 2080. In addition to spodumene and lepidolite ores, Li is present in seawater, and salt-lake brines as dissolved Li+ ions. Li recovery from aqueous solutions such as these are a potential solution to limited terrestrial reserves. The present work reviews the advantages and challenges of a variety of technologies for Li recovery from aqueous solutions, including precipitants, solvent extractants, Li-ion sieves, Li-ion-imprinted membranes, battery-based electrochemical systems, and electro-membrane-based electrochemical systems. The techno-economic feasibility and key performance parameters of each technology, such as the Li+ capacity, selectivity, separation efficiency, recovery, regeneration, cyclical stability, thermal stability, environmental durability, product quality, extraction time, and energy consumption are highlighted when available. Excluding precipitation and solvent extraction, these technologies demonstrate a high potential for sustainable Li+ extraction from low Li+ concentration aqueous solutions or seawater. However, further research and development will be required to scale these technologies from benchtop experiments to industrial applications. The development of optimized materials and synthesis methods that improve the Li+ selectivity, separation efficiency, chemical stability, lifetime, and Li+ recovery should be prioritized. Additionally, techno-economic and life cycle analyses are needed for a more critical evaluation of these extraction technologies for large-scale Li production. Such assessments will further elucidate the climate impact, energy demand, capital costs, operational costs, productivity, potential return on investment, and other key feasibility factors. It is anticipated that this review will provide a solid foundation for future research commercialization efforts to sustainably meet the growing demand for Li as the world transitions to clean energy.

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“…Of these eight processes, UF, NF, FO, ED/EDR, and RO are in use for decontaminating waters containing various types of pollutants (organic and inorganic compounds, solid materials). In this context, it is worth mentioning their application to the removal of heavy metals [32][33][34]. The membrane approaches can be used not only individually, but in a combined manner.…”

Section: Conventional Technologies For Heavy Metals (Hms) Removal Fro...mentioning

confidence: 99%

Polymer Membranes as Innovative Means of Quality Restoring for Wastewater Bearing Heavy Metals

et al. 2022

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The problem that has aroused the interest of this review refers to the harmful effect of heavy metals on water sources due to industrial development. In this respect, the review is aimed at achieving a literature survey on the outstanding results and advancements in membranes and membrane technologies for the advanced treatment of heavy metal-loaded wastewaters. Particular attention is given to synthetic polymer membranes, for which the proper choice of precursor material can provide cost benefits while ensuring good decontamination activity. Furthermore, it was also found that better removal efficiencies of heavy metals are achieved by combining the membrane properties with the adsorption properties of inorganic powders. The membrane processes of interest from the perspective of industrial applications are also discussed. A noteworthy conclusion is the fact that the main differences between membranes, which refer mainly to the definition and density of the pore structure, are the prime factors that affect the separation process of heavy metals. Literature studies reveal that applying UF/MF approaches prior to RO leads to a better purification performance.

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A Critical Review On Heavy Metals Removal Using Ionic Liquid Membranes From The Industrial Wastewater

Cited by 54 publications

References 112 publications

An Overview of Practical Aspects of the Design and Application of Polymeric/Ceramic Supports in Supported Liquid Membranes for Gas Separation

An Overview of Practical Aspects of the Design and Application of Polymeric/Ceramic Supports in Supported Liquid Membranes for Gas Separation

A review of technologies for direct lithium extraction from low Li+ concentration aqueous solutions

Polymer Membranes as Innovative Means of Quality Restoring for Wastewater Bearing Heavy Metals

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