scholarly journals Novel thin film nanocomposite membranes decorated with few-layered boron nitride nanosheets for simultaneously enhanced water flux and organic fouling resistance

2019 ◽  
Vol 488 ◽  
pp. 565-577 ◽  
Author(s):  
Sara Abdikheibari ◽  
Weiwei Lei ◽  
Ludovic F. Dumée ◽  
Anders J. Barlow ◽  
Kanagaratnam Baskaran
Keyword(s):  
Thin Film ◽  
Boron Nitride ◽  
Water Flux ◽  
Fouling Resistance ◽  
Nanocomposite Membranes ◽  
Boron Nitride Nanosheets ◽  
Organic Fouling ◽  
Thin Film Nanocomposite

scholarly journals Organo-Functionalization: An Effective Method in Enhancing the Separation and Antifouling Performance of Thin-Film Nanocomposite Membranes by Improving the Uniform Dispersion of Palygorskite Nanoparticles

Membranes ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 889
Author(s):  
Liu Yang ◽  
Qianwen Zhang ◽  
Qikun Wang ◽  
Wande Ding ◽  
Kefeng Zhang
Keyword(s):  
Thin Film ◽  
Water Flux ◽  
Intermolecular Forces ◽  
Nanocomposite Membranes ◽  
Membrane Performance ◽  
Chemically Modified ◽  
Uniform Dispersion ◽  
Fouling Reduction ◽  
Layer Composition ◽  
Thin Film Nanocomposite

Recently, palygorskite (Pal) has become a promising new membrane additive in flux enhancement and fouling reduction, which is an environmentally friendly nanoclay material under the 2:1 layer composition with 1D tubular structure. However, the aggregation of Pal due to the intermolecular forces is still an obstacle to be solved in improving membrane performance. Herein, Pal nanoparticles were chemically modified by KH550 to weaken the aggregation and improve the dispersibility, and then incorporated into the organic phase to prepare thin-film nanocomposite (TFN) membranes. The results showed that the organo-functionalization could effectively improve the membrane hydrophilicity and dispersion of Pal nanoparticles in the polyamide layer, which contributed to the enhanced water flux (from 25 to 38 L/m2·h), unchanged salt rejection (98.0%) and better antifouling capacity (91% flux recovery rate), which suggested that the organo-functionalization of nanoparticles was an efficient method in further enhancing membrane performance

Anti-organic fouling and anti-biofouling poly(piperazineamide) thin film nanocomposite membranes for low pressure removal of heavy metal ions

2018 ◽  
Vol 343 ◽  
pp. 86-97 ◽  
Author(s):  
Anupam Bera ◽  
Jaladhi S. Trivedi ◽  
Sweta Binod Kumar ◽  
Arvind K. Singh Chandel ◽  
Soumya Haldar ◽  
...  
Keyword(s):  
Thin Film ◽  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Low Pressure ◽  
Nanocomposite Membranes ◽  
Organic Fouling ◽  
Thin Film Nanocomposite

scholarly journals 2D Nanocomposite Membranes: Water Purification and Fouling Mitigation

Membranes ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 295
Author(s):  
Lara Loske ◽  
Keizo Nakagawa ◽  
Tomohisa Yoshioka ◽  
Hideto Matsuyama
Keyword(s):  
Thin Film ◽  
Water Purification ◽  
Mixed Matrix Membranes ◽  
Two Dimensional ◽  
Fouling Resistance ◽  
Mixed Matrix ◽  
Nanocomposite Membranes ◽  
Different Types ◽  
Tremendous Amount ◽  
Thin Film Nanocomposite

In this study, the characteristics of different types of nanosheet membranes were reviewed in order to determine which possessed the optimum propensity for antifouling during water purification. Despite the tremendous amount of attention that nanosheets have received in recent years, their use to render membranes that are resistant to fouling has seldom been investigated. This work is the first to summarize the abilities of nanosheet membranes to alleviate the effect of organic and inorganic foulants during water treatment. In contrast to other publications, single nanosheets, or in combination with other nanomaterials, were considered to be nanostructures. Herein, a broad range of materials beyond graphene-based nanomaterials is discussed. The types of nanohybrid membranes considered in the present work include conventional mixed matrix membranes, stacked membranes, and thin-film nanocomposite membranes. These membranes combine the benefits of both inorganic and organic materials, and their respective drawbacks are addressed herein. The antifouling strategies of nanohybrid membranes were divided into passive and active categories. Nanosheets were employed in order to induce fouling resistance via increased hydrophilicity and photocatalysis. The antifouling properties that are displayed by two-dimensional (2D) nanocomposite membranes also are examined.

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