Organic solvent forward osmosis membranes for pharmaceutical concentration

Goh, Keng Siang; Chen, Yunfeng; Ng, Daniel Yee Fan; Chew, Jia Wei; Wang, Rong

doi:10.1016/j.memsci.2021.119965

Cited by 30 publications

(18 citation statements)

References 50 publications

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“…Solvent recovery and reuse are economically vital in determining the sustainability of the production processes in petrochemical, medical device, and pharmaceutical manufacturing plants. − This is because the recovery of solvents from these process streams is necessary not only for cost reduction by reusing the process components from spent solvents but also to eliminate waste and comply with the environmental effluent regulations. In view of this, we employed the CTM-8/PA TFN membrane for potential purification with the simultaneous recovery of the ethanol solvent.…”

Section: Results and Discussionmentioning

confidence: 99%

Crumpled Globule-Heterotextured Polyamide Membrane Interlayered with Protein–Polyphenol Nanoaggregates for Enhanced Forward Osmosis Performance

Liu

Wen

Liao

et al. 2022

ACS Appl. Mater. Interfaces

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Surface modulation of polyamide structures and the development of nanochanneled membranes with excellent water transport properties are crucial for the separation performance enhancement of thin-film composite membranes. Here, we demonstrate the fabrication of a modular nanochannel-integrated polyamide network on a nanoporous interlayer membrane comprising Mxene-reinforced protein–polyphenol nanoaggregates. The research indicates that the confined growth of the polyamide matrix inside this hydrophilic sub-10 nm nanochannel nanoporous intermediate layer stiffened the interfacial channels, leading to the formation of a polyamide layer with a spatial distribution of a network of unique 3D crumpled globule-like nanostructures. The high specific surface area of such a morphology bestowed the membrane with increased filtration area while facilitating the nanofluidic transport of water molecules through the nanochanneled membrane structure, leading to enhanced water flux of up to 26.6 L m–2 h–1 (active layer facing the feed solution) and 41.0 L m–2 h–1 (active layer facing the draw solution) using 1.0 M NaCl as the draw solution. The membrane equally exhibited good treatment for organic solvent forward osmosis filtration and typical seawater desalination. Moreover, the hierarchical nanostructures induced antimicrobial activity by effectively reducing the biofilm formation of Gram-negative Escherichia coli bacteria. This work provides significant insights into the interfacial engineering and compatibility of the nanomaterials and the polymers in interlayer mixed-matrix membranes, which are environmentally sustainable and cost-effective for the fabrication of advanced forward osmosis membranes for water purification and osmotic energy applications.

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Section: Results and Discussionmentioning

confidence: 99%

Crumpled Globule-Heterotextured Polyamide Membrane Interlayered with Protein–Polyphenol Nanoaggregates for Enhanced Forward Osmosis Performance

Liu

Wen

Liao

et al. 2022

ACS Appl. Mater. Interfaces

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show abstract

“…Therefore, OSFO saves on operation and maintenance costs [ 346 ]. Goh et al demonstrated the potential of OSFO for pharmaceutical concentration [ 347 ]. The fabricated hollow fiber membranes showed a high acetone flux and low reverse solute flux when PEG-400 in acetone was used as a draw solution for the levofloxacin concentration process.…”

Section: Applications Of Hollow Fiber Membranesmentioning

confidence: 99%

State-of-the-Art Organic- and Inorganic-Based Hollow Fiber Membranes in Liquid and Gas Applications: Looking Back and Beyond

Lau

Soh

et al. 2022

Membranes

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The aggravation of environmental problems such as water scarcity and air pollution has called upon the need for a sustainable solution globally. Membrane technology, owing to its simplicity, sustainability, and cost-effectiveness, has emerged as one of the favorable technologies for water and air purification. Among all of the membrane configurations, hollow fiber membranes hold promise due to their outstanding packing density and ease of module assembly. Herein, this review systematically outlines the fundamentals of hollow fiber membranes, which comprise the structural analyses and phase inversion mechanism. Furthermore, illustrations of the latest advances in the fabrication of organic, inorganic, and composite hollow fiber membranes are presented. Key findings on the utilization of hollow fiber membranes in microfiltration (MF), nanofiltration (NF), reverse osmosis (RO), forward osmosis (FO), pervaporation, gas and vapor separation, membrane distillation, and membrane contactor are also reported. Moreover, the applications in nuclear waste treatment and biomedical fields such as hemodialysis and drug delivery are emphasized. Subsequently, the emerging R&D areas, precisely on green fabrication and modification techniques as well as sustainable materials for hollow fiber membranes, are highlighted. Last but not least, this review offers invigorating perspectives on the future directions for the design of next-generation hollow fiber membranes for various applications. As such, the comprehensive and critical insights gained in this review are anticipated to provide a new research doorway to stimulate the future development and optimization of hollow fiber membranes.

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“…The polyamide-based TFC/TFN FO membranes have demonstrated promising performance thus far, though it is difficult to break the selective-permeability trade-off of the material. Additionally, polymer-supported polyamide FO membranes may not withstand challenging feeds that contain strong organic solvents and strong oxidizing agents, or with extreme pH conditions [ 152 , 153 , 154 ]. A non-polyamide selective layer fabricated by nanomaterials, such as MOFs, 2D carbon-based materials [ 48 ], and COFs have been developed for the FO process.…”

Section: Selective Layer Of Fo Membranesmentioning

confidence: 99%

Forward Osmosis Membranes: The Significant Roles of Selective Layer

Tian

Goh

et al. 2022

Membranes

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Forward osmosis (FO) is a promising separation technology to overcome the challenges of pressure-driven membrane processes. The FO process has demonstrated profound advantages in treating feeds with high salinity and viscosity in applications such as brine treatment and food processing. This review discusses the advancement of FO membranes and the key membrane properties that are important in real applications. The membrane substrates have been the focus of the majority of FO membrane studies to reduce internal concentration polarization. However, the separation layer is critical in selecting the suitable FO membranes as the feed solute rejection and draw solute back diffusion are important considerations in designing large-scale FO processes. In this review, emphasis is placed on developing FO membrane selective layers with a high selectivity. The effects of porous FO substrates in synthesizing high-performance polyamide selective layer and strategies to overcome the substrate constraints are discussed. The role of interlayer in selective layer synthesis and the benefits of nanomaterial incorporation will also be reviewed.

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Organic solvent forward osmosis membranes for pharmaceutical concentration

Cited by 30 publications

References 50 publications

Crumpled Globule-Heterotextured Polyamide Membrane Interlayered with Protein–Polyphenol Nanoaggregates for Enhanced Forward Osmosis Performance

Crumpled Globule-Heterotextured Polyamide Membrane Interlayered with Protein–Polyphenol Nanoaggregates for Enhanced Forward Osmosis Performance

State-of-the-Art Organic- and Inorganic-Based Hollow Fiber Membranes in Liquid and Gas Applications: Looking Back and Beyond

Forward Osmosis Membranes: The Significant Roles of Selective Layer

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