Composite anti-scaling membrane made of interpenetrating networks of nanofibers for selective separation of lithium

Zhao, Yan; Wu, Mengyao; Shen, Pengxin; Uytterhoeven, Collin; Mamrol, Natalie; Shen, Jinwen; Gao, Congjie; Bruggen, Bart Van der

doi:10.1016/j.memsci.2020.118668

Cited by 66 publications

(33 citation statements)

References 56 publications

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“…For applications such as dialysis membranes and BPMs, a hot-pressing process is necessary to obtain dense membranes [ 31 ]. In addition, the KANF-based IEMs are usually prepared by casting Kevlar NF solutions, which are obtained by dissolution of Kevlar aramid fiber [ 32 , 33 , 34 ]. The dense NF composite membranes are usually prepared by casting polymer solutions on NF networks, followed by a drying process [ 35 ].…”

Section: Fundamental Aspects and Production Methods Of Ion-exchange Nanofibersmentioning

confidence: 99%

“…The prepared membrane had a thickness of ~8 µm and exhibited a high membrane limiting current density of 32.0 mA·cm −2 (in 0.1 M NaCl solution) with an exceptional desalination efficiency (99.9% for NaCl) in ED. Moreover, the separation of Li + /Mg 2+ with the prepared membrane is comparable to that of commercial CEMs with monovalent selectivity [ 34 ]. Zhao et al reported a KANF-based CEM with a high performance for ion separation in ED with a maximum desalination efficiency of 99.7% after 220 min for Na 2 SO 4 and significant selectivity for monovalent cations.…”

Section: Applications Of Nanofiber-based Iemsmentioning

confidence: 99%

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De Novo Ion-Exchange Membranes Based on Nanofibers

2021

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The unique functions of nanofibers (NFs) are based on their nanoscale cross-section, high specific surface area, and high molecular orientation, and/or their confined polymer chains inside the fibers. The introduction of ion-exchange (IEX) groups on the surface and/or inside the NFs provides de novo ion-exchangers. In particular, the combination of large surface areas and ionizable groups in the IEX-NFs improves their performance through indices such as extremely rapid ion-exchange kinetics and high ion-exchange capacities. In reality, the membranes based on ion-exchange NFs exhibit superior properties such as high catalytic efficiency, high ion-exchange and adsorption capacities, and high ionic conductivities. The present review highlights the fundamental aspects of IEX-NFs (i.e., their unique size-dependent properties), scalable production methods, and the recent advancements in their applications in catalysis, separation/adsorption processes, and fuel cells, as well as the future perspectives and endeavors of NF-based IEMs.

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Section: Fundamental Aspects and Production Methods Of Ion-exchange Nanofibersmentioning

confidence: 99%

Section: Applications Of Nanofiber-based Iemsmentioning

confidence: 99%

De Novo Ion-Exchange Membranes Based on Nanofibers

2021

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“…While most applications of ED occur in aqueous media, more attention is being given to organic media as well [264]. Zhao et al expanded the development of ED membranes to the treatment of waste organic streams [239,240,244,246]. Their ED membranes are based on poly (paraphenylene terephthalamide) nanofibers, which are characterized by their organic solvent resistance, high strength and outstanding thermal stability.…”

Section: Desalination Of Brackish Watermentioning

confidence: 99%

“…Scaling products typically consist of crystallized salts containing Mg and Ca, present from the treated water, and is inevitable. Porous ion-exchange membranes containing functionalized nanofibers can reduce the effect of fouling/scaling [57,244,270]. However, this effect is never completely avoidable.…”

Section: Desalination Of Brackish Watermentioning

confidence: 99%

A review on ion-exchange nanofiber membranes: properties, structure and application in electrochemical (waste)water treatment

Swanckaert

Geltmeyer

Rabaey

et al. 2022

Separation and Purification Technology

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“…Some metal cations (e.g., Ca 2+ , Mg 2+ and Al 3+ ) react with functional organics groups to form organic-inorganic compounds (Fig. 5(d)) [183]. For example, alginate forms a severe gel layer when Ca 2+ is present in wastewater.…”

Section: Membrane Fouling Mechanisms In Mbrmentioning

confidence: 99%

Membrane bioreactors for hospital wastewater treatment: recent advancements in membranes and processes

Zhao

Qiu

Mamrol

et al. 2021

Front. Chem. Sci. Eng.

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Discharged hospital wastewater contains various pathogenic microorganisms, antibiotic groups, toxic organic compounds, radioactive elements, and ionic pollutants. These contaminants harm the environment and human health causing the spread of disease. Thus, effective treatment of hospital wastewater is an urgent task for sustainable development. Membranes, with controllable porous and nonporous structures, have been rapidly developed for molecular separations. In particular, membrane bioreactor (MBR) technology demonstrated high removal efficiency toward organic compounds and low waste sludge production. To further enhance the separation efficiency and achieve material recovery from hospital waste streams, novel concepts of MBRs and their applications are rapidly evolved through hybridizing novel membranes (non hydrophilic ultrafiltration/microfiltration) into the MBR units (hybrid MBRs) or the MBR as a pretreatment step and integrating other membrane processes as subsequent secondary purification step (integrated MBR-membrane systems). However, there is a lack of reviews on the latest advancement in MBR technologies for hospital wastewater treatment, and analysis on its major challenges and future trends. This review started with an overview of main pollutants in common hospital wastewater, followed by an understanding on the key performance indicators/criteria in MBR membranes (i.e., solute selectivity) and processes (e.g., fouling). Then, an in-depth analysis was provided into the recent development of hybrid MBR and integrated MBR-membrane system concepts, and applications correlated with wastewater sources, with a particular focus on hospital wastewaters. It is anticipated that this review will shed light on the knowledge gaps in the field, highlighting the potential contribution of hybrid MBRs and integrated MBRmembrane systems toward global epidemic prevention.

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Composite anti-scaling membrane made of interpenetrating networks of nanofibers for selective separation of lithium

Cited by 66 publications

References 56 publications

De Novo Ion-Exchange Membranes Based on Nanofibers

De Novo Ion-Exchange Membranes Based on Nanofibers

A review on ion-exchange nanofiber membranes: properties, structure and application in electrochemical (waste)water treatment

Membrane bioreactors for hospital wastewater treatment: recent advancements in membranes and processes

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