Cellulose Triacetate (CTA) Hollow-Fiber (HF) Membranes for Sustainable Seawater Desalination: A Review

Nakao, Takayuki; Miura, Yuki; Furuichi, Kenji; Yasukawa, Masahiro

doi:10.3390/membranes11030183

Cited by 20 publications

(8 citation statements)

References 80 publications

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“…Meanwhile, membrane separation with its low energy consumption, ease of operation, and continuous separation is considered the most favorable chiral separation technique. [32][33][34][35] CTA membranes are extensively utilized in diverse applications, including desalination, [36][37][38][39] wastewater treatment, [40][41][42] and gas separation, 43,44 owing to their straightforward fabrication, high durability and stability. The six-membered ring of the CTA backbone contains chiral carbons, thus potentially enabling CTA to facilitate chiral recognition.…”

Section: Introductionmentioning

confidence: 99%

Chiral separation of D,L‐phenylglycine by cellulose triacetate membranes

Zhao,

Cui,

Yuan

2024

J of Applied Polymer Sci

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Enantiopure pharmaceuticals are especially important in medicinal applications. Phenylglycine, as a critical pharmaceutical intermediate, is often utilized in single enantiomeric form for drug synthesis. Chiral membrane separation offers advantages such as simple operation, low energy consumption, and scalability, holding great potential for chiral drug separations. In this work, cellulose triacetate (CTA) membranes are prepared via phase inversion and used for permeation experiments driven by a concentration gradient to investigate selective permeation of D,L‐phenylglycine solutions. Scanning electron microscopy reveals surface and cross‐sectional morphologies of the fabricated membranes. After single‐factor optimization, the CTA membrane exhibits an enantiomeric excess of 68.94% for D,L‐phenylglycine separation. The membrane maintains its selective permeation capability after repeated use. This indicates the CTA membrane has favorable chiral selective permeation for D,L‐phenylglycine solutions with stable performance. The chiral carbon on the six‐membered ring of the CTA backbone, as well as the single‐handed helical structure of the backbone, are thought to be responsible for the chiral selectivity of the membrane. This is the first report of using CTA membranes for chiral amino acid separation, providing experimental references and theoretical basis for membrane separation of racemic mixtures. It could facilitate scalable applications of chiral membranes.

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Section: Introductionmentioning

confidence: 99%

Chiral separation of D,L‐phenylglycine by cellulose triacetate membranes

Zhao,

Cui,

Yuan

2024

J of Applied Polymer Sci

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“…For example, it is necessary to overcome the trade-off between the selectivity and permeability of the membranes and ensure that the membranes are robust under harsh operating conditions. [5,9,11,12,20] To address these challenges, various membrane materials have been explored, including polymers, [6,12,21,22] inorganic membranes such as zeolites [23][24][25][26][27] and carbon nanotubes (CNTs), [28,29] metalorganic frameworks (MOFs), [30] and polymer-inorganic composite membranes. [31,32] Such membranes aim to achieve improved performance by controlling the surface charges and membrane channel size, which leads to high permeability and selectivity.…”

Section: Introductionmentioning

confidence: 99%

Extreme Ion‐Transport Inorganic 2D Membranes for Nanofluidic Applications

et al. 2023

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Inorganic 2D materials offer a new approach to controlling mass diffusion at the nanoscale. Controlling ion transport in nanofluidics is key to energy conversion, energy storage, water purification, and numerous other applications wherein persistent challenges for efficient separation must be addressed. The recent development of 2D membranes in the emerging field of energy harvesting, water desalination, and proton/Li‐ion production in the context of green energy and environmental technology is herein discussed. The fundamental mechanisms, 2D membrane fabrication, and challenges toward practical applications are highlighted. Finally, the fundamental issues of thermodynamics and kinetics are outlined along with potential membrane designs that must be resolved to bridge the gap between lab‐scale experiments and production levels.

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“…CTA is a popular membrane material derived from the natural cellulose. Thus, CTA membranes attract extensive attention due to their great biocompatibility, excellent hydrophilicity, and outstanding antifouling property compared with most other polymeric membranes [27][28][29][30]. In this work, we comprehensively investigated the structure and property of CTA substrate via N-TIPS, and compared with those via NIPS and TIPS processes.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Thin-Film Composite Forward Osmosis Membranes Supported by Cellulose Triacetate Porous Substrate via a Nonsolvent-Thermally Induced Phase Separation Process

et al. 2022

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A porous substrate plays an important role in constructing a thin-film composite forward osmosis (TFC-FO) membrane. To date, the morphology and performance of TFC-FO membranes are greatly limited by porous substrates, which are commonly fabricated by non-solvent induced phase separation (NIPS) or thermally induced phase separation (TIPS) processes. Herein, a novel TFC-FO membrane has been successfully fabricated by using cellulose triacetate (CTA) porous substrates, which are prepared using a nonsolvent-thermally induced phase separation (N-TIPS) process. The pore structure, permeability, and mechanical properties of CTA porous substrate are carefully investigated via N-TIPS process (CTAN-TIPS). As compared with those via NIPS and TIPS processes, the CTAN-TIPS substrate shows a smooth surface and a cross section combining interconnected pores and finger-like macropores, resulting in the largest water flux and best mechanical property. After interfacial polymerization, the obtained TFC-FO membranes are characterized in terms of their morphology and intrinsic transport properties. It is found that the TFC-FO membrane supported by CTAN-TIPS substrate presents a thin polyamide film full of nodular and worm-like structure, which endows the FO membrane with high water permeability and selectivity. Moreover, the TFC-FO membrane supported by CTAN-TIPS substrate displays a low internal concentration polarization effect. This work proposes a new insight into preparing TFC-FO membrane with good overall performance.

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Cellulose Triacetate (CTA) Hollow-Fiber (HF) Membranes for Sustainable Seawater Desalination: A Review

Cited by 20 publications

References 80 publications

Chiral separation of D,L‐phenylglycine by cellulose triacetate membranes

Chiral separation of D,L‐phenylglycine by cellulose triacetate membranes

Extreme Ion‐Transport Inorganic 2D Membranes for Nanofluidic Applications

Preparation and Properties of Thin-Film Composite Forward Osmosis Membranes Supported by Cellulose Triacetate Porous Substrate via a Nonsolvent-Thermally Induced Phase Separation Process

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