Modeling Water Transport in Interlayered Thin-Film Nanocomposite Membranes: Gutter Effect vs Funnel Effect DOI
Fei Wang, Zhe Yang,

Chuyang Y. Tang

et al.

ACS ES&T Engineering, Journal Year: 2022, Volume and Issue: 2(11), P. 2023 - 2033

Published: Aug. 26, 2022

Interlayered thin-film nanocomposite (TFNi) membranes have experimentally demonstrated a great potential for achieving major gains in water permeance over conventional composite membranes, making them promising candidates many environmental applications. Nevertheless, existing literature often reports contradicting observations on the effectiveness of interlayers. In this study, we implement three-dimensional solution-diffusion model to analyze geometry-induced funnel effect and an interlayer-promoted gutter effect. Our simulation results suggest that even ultrathin interlayer few nanometers thickness could serve as low-resistance layer, which minimizes transversal transport less permeable polyamide layer thereby mitigate unfavorable The actual available is bounded by ideal polyamide-limited upper bound substrate-limited lower bound, with regulating competition between Water can be potentially improved order magnitude interlayer, enhancement more pronounced thinner layers, porous substrates, We further role improving flux distribution/uniformity membrane surface, has implications fouling propensity. study establishes theoretical framework understanding fundamental mechanisms TFNi provides important guidance future development high-performance desalination membranes.

Language: Английский

Nanofiltration Membranes with Crumpled Polyamide Films: A Critical Review on Mechanisms, Performances, and Environmental Applications DOI
Senlin Shao,

Fanxi Zeng,

Li Long

et al.

Environmental Science & Technology, Journal Year: 2022, Volume and Issue: 56(18), P. 12811 - 12827

Published: Sept. 1, 2022

Nanofiltration (NF) membranes have been widely applied in many important environmental applications, including water softening, surface/groundwater purification, wastewater treatment, and reuse. In recent years, a new class of piperazine (PIP)-based NF featuring crumpled polyamide layer has received considerable attention because their great potential for achieving dramatic improvements membrane separation performance. Since the report novel Turing structures that exhibited an order magnitude enhancement permeance ( Science 2018, 360 (6388), 518−521), number published research papers on this emerging topic grown exponentially to approximately 200. critical review, we provide systematic framework classify morphologies. The fundamental mechanisms fabrication methods involved formation these morphologies are summarized. We then discuss transport solutes how phenomena could simultaneously improve permeance, selectivity, antifouling applications highlighted, future opportunities/needs identified. insights review guidance further development high-performance tailored wide range applications.

Language: Английский

Citations

220

Ultrathin Membranes for Separations: A New Era Driven by Advanced Nanotechnology DOI
Shiyu Zhang, Liang Shen, Hao Deng

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(21)

Published: March 3, 2022

Ultrathin membranes are at the forefront of membrane research, offering great opportunities in revolutionizing separations with ultrafast transport. Driven by advanced nanomaterials and manufacturing technology, tremendous progresses made over last 15 years fabrications applications sub-50 nm membranes. Here, an overview state-of-the-art ultrathin is first introduced, followed a summary fabrication techniques emphasis on how to realize such extremely low thickness. Then, different types membranes, categorized based their structures, that is, network, laminar, or framework discussed focus interplays among structure, methods, separation performances. Recent research development trends highlighted. Meanwhile, performances current for representative (gas liquid separation) thoroughly analyzed compared. Last, challenges material design, structure construction, coordination given, order fully potential facilitate translation from scientific achievements industrial productions.

Language: Английский

Citations

151

Carbon Nanotube Interlayer Enhances Water Permeance and Antifouling Performance of Nanofiltration Membranes: Mechanisms and Experimental Evidence DOI
Li Long, Chenyue Wu, Zhe Yang

et al.

Environmental Science & Technology, Journal Year: 2022, Volume and Issue: 56(4), P. 2656 - 2664

Published: Feb. 3, 2022

Interlayered thin-film nanocomposite (TFNi) membranes have been shown to achieve enhanced water permeance as a result of the gutter effect. Nevertheless, some studies report impaired separation performance after inclusion an interlayer. In this study, we resolve competing mechanisms transport in transverse direction vs that normal direction. To enable easy comparison, carbon nanotube (CNT)-incorporated TFNi with identical polyamide rejection layer but different interlayer thicknesses were investigated. While increasing thickness CNT facilitates (therefore improving effect), it simultaneously increases its hydraulic resistance An optimal 13.0 ± 0.7 L m–2 h–1 bar–1, which was more than doubled over control membrane 6.1 realized at moderate thickness, resulting from trade-off between these two mechanisms. demonstrate reduced fouling and improved reversibility for without interlayer, can be attributed uniform flux distribution. The fundamental revealed study lay solid foundation future development toward properties antifouling ability.

Language: Английский

Citations

115

Nanovehicle-assisted monomer shuttling enables highly permeable and selective nanofiltration membranes for water purification DOI
Ruobin Dai, Huimin Zhou, Tianlin Wang

et al.

Nature Water, Journal Year: 2023, Volume and Issue: 1(3), P. 281 - 290

Published: Feb. 27, 2023

Language: Английский

Citations

98

Enhancing the permeability, anti-biofouling performance and long-term stability of TFC nanofiltration membrane by imidazole-modified carboxylated graphene oxide/polyethersulfone substrate DOI

Chengbao Geng,

Fangbo Zhao, Hongyan Niu

et al.

Journal of Membrane Science, Journal Year: 2022, Volume and Issue: 664, P. 121099 - 121099

Published: Oct. 21, 2022

Language: Английский

Citations

91

Significant roles of substrate properties in forward osmosis membrane performance: A review DOI
Mohammad Saeed Kahrizi, Ralph Rolly Gonzales, Lingxue Kong

et al.

Desalination, Journal Year: 2022, Volume and Issue: 528, P. 115615 - 115615

Published: Feb. 10, 2022

Language: Английский

Citations

89

Fabrication of novel thin-film nanocomposite polyamide membrane by the interlayer approach: A review DOI

Tengteng Xie,

Feiyang Li, Kuo Chen

et al.

Desalination, Journal Year: 2023, Volume and Issue: 554, P. 116509 - 116509

Published: March 3, 2023

Language: Английский

Citations

57

Pressure-driven membrane desalination DOI
Weifan Liu, J. Livingston, Li Wang

et al.

Nature Reviews Methods Primers, Journal Year: 2024, Volume and Issue: 4(1)

Published: Feb. 8, 2024

Language: Английский

Citations

48

Recent advances of the interfacial polymerization process in gas separation membranes fabrication DOI

Chaoqi Ge,

Menglong Sheng,

Ye Yuan

et al.

Journal of Membrane Science, Journal Year: 2023, Volume and Issue: 683, P. 121854 - 121854

Published: June 16, 2023

Language: Английский

Citations

46

Polyamide layer modulation for PA-TFC membranes Optimization: Developments, Mechanisms, and implications DOI

Guorong Xu,

Zi-Han An,

Min-Wang

et al.

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 311, P. 123200 - 123200

Published: Jan. 20, 2023

Language: Английский

Citations

45