Corrigendum to “Fabrication of composite nanofiltration membrane by incorporating attapulgite nanorods during interfacial polymerization for high water flux and antifouling property” [J. Membr. Sci. 544 (2017) 79–87]

2021 ◽  
Vol 623 ◽  
pp. 119084
Author(s):  
Mengyuan Wu ◽  
Tianyi Ma ◽  
Yanlei Su ◽  
Hong Wu ◽  
Xinda You ◽  
...  
Keyword(s):  
Interfacial Polymerization ◽  
Water Flux ◽  
High Water ◽  
Nanofiltration Membrane ◽  
Antifouling Property

scholarly journals Two-dimensional fractal nanocrystals templating for substantial performance enhancement of polyamide nanofiltration membrane

2021 ◽  
Vol 118 (37) ◽  
pp. e2019891118
Author(s):  
Yang Lu ◽  
Ruoyu Wang ◽  
Yuzhang Zhu ◽  
Zhenyi Wang ◽  
Wangxi Fang ◽  
...  
Keyword(s):  
Performance Enhancement ◽  
Interfacial Polymerization ◽  
Water Flux ◽  
Practical Method ◽  
Curing Temperature ◽  
Polymerization Process ◽  
Nanofiltration Membrane ◽  
Two Dimensional ◽  
Fractal Structures ◽  
Templating Method

In this study, we report the emergence of two-dimensional (2D) branching fractal structures (BFS) in the nanoconfinement between the active and the support layer of a thin-film-composite polyamide (TFC-PA) nanofiltration membrane. These BFS are crystal dendrites of NaCl formed when salts are either added to the piperazine solution during the interfacial polymerization process or introduced to the nascently formed TFC-PA membrane before drying. The NaCl dosing concentration and the curing temperature have an impact on the size of the BFS but not on the fractal dimension (∼1.76). The BFS can be removed from the TFC-PA membranes by simply dissolving the crystal dendrites in deionized water, and the resulting TFC-PA membranes have substantially higher water fluxes (three- to fourfold) without compromised solute rejection. The flux enhancement is believed to be attributable to the distributed reduction in physical binding between the PA active layer and the support layer, caused by the exertion of crystallization pressure when the BFS formed. This reduced physical binding leads to an increase in the effective area for water transport, which, in turn, results in higher water flux. The BFS-templating method, which includes the interesting characteristics of 2D crystal dendrites, represents a facile, low-cost, and highly practical method of enhancing the performance of the TFC-PA nanofiltration membrane without having to alter the existing infrastructure of membrane fabrication.

scholarly journals Modification of polyamide TFC nanofiltration membrane for improving separation and antifouling properties

RSC Advances ◽  
2018 ◽  
Vol 8 (27) ◽  
pp. 15102-15110 ◽  
Author(s):  
Li-Fen Liu ◽  
Xiang Huang ◽  
Xiao Zhang ◽  
Ke Li ◽  
Yan-Li Ji ◽  
...  
Keyword(s):  
Interfacial Polymerization ◽  
Aromatic Polyamide ◽  
Good Stability ◽  
Nanofiltration Membrane ◽  
Antifouling Property ◽  
Dye Rejection ◽  
Polymerization Method

TMAAM, a new dendrimer, was used to modify the conventional aromatic polyamide NF membrane via interfacial polymerization method, and the result TMAAM-based semi-aromatic polyamide NF membrane strong dye rejection, favourable antifouling property and good stability.

scholarly journals Forward Osmosis: A Critical Review

Processes ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 404 ◽  
Author(s):  
Mehrdad Mohammadifakhr ◽  
Joris de Grooth ◽  
Hendrik D. W. Roesink ◽  
Antoine J. B. Kemperman
Keyword(s):  
Interfacial Polymerization ◽  
Water Flux ◽  
Forward Osmosis ◽  
High Water ◽  
Structural Parameter ◽  
Selective Layer ◽  
Internal Concentration ◽  
Alternative Approaches ◽  
Planar Geometries ◽  
Dominant Influence

The use of forward osmosis (FO) for water purification purposes has gained extensive attention in recent years. In this review, we first discuss the advantages, challenges and various applications of FO, as well as the challenges in selecting the proper draw solution for FO, after which we focus on transport limitations in FO processes. Despite recent advances in membrane development for FO, there is still room for improvement of its selective layer and support. For many applications spiral wound membrane will not suffice. Furthermore, a defect-free selective layer is a prerequisite for FO membranes to ensure low solute passage, while a support with low internal concentration polarization is necessary for a high water flux. Due to challenges affiliated to interfacial polymerization (IP) on non-planar geometries, we discuss alternative approaches to IP to form the selective layer. We also explain that, when provided with a defect-free selective layer with good rejection, the membrane support has a dominant influence on the performance of an FO membrane, which can be estimated by the structural parameter (S). We emphasize the necessity of finding a new method to determine S, but also that predominantly the thickness of the support is the major parameter that needs to be optimized.

Preparation and Characterization of the Tri-Channel Hollow Fiber Charged Mosaic Membrane

2010 ◽  
Vol 150-151 ◽  
pp. 1315-1320 ◽  
Author(s):  
Jian Mian Deng ◽  
Jin Dun Liu ◽  
Hao Qin Zhang ◽  
Ya Tao Zhang ◽  
Dong Cheng
Keyword(s):  
Aqueous Phase ◽  
Organic Phase ◽  
Hollow Fiber ◽  
Interfacial Polymerization ◽  
Xylenol Orange ◽  
Uniform Design ◽  
Water Flux ◽  
Composite Layer ◽  
High Water ◽  
Sulfonate Group

Charged mosaic membrane (CMM) has high water flux, low salt retention and high organic rejection. The tri-channel hollow fiber charged-mosaic membrane (CMM) was prepared by interfacial polymerization (IP). The tri-channel polysulfone (PSF) hollow fiber ultrafiltration(UF) membrane was used as the support membrane. Polyethylenimine (PEI), 2, 5-diamino-benzenesulfonic acid (DIA) and basic fuchsin (BF) were used as aqueous phase monomer. Trimesoyl chloride (TMC) was used as organic phase monomer. ATR-IR, scanning electron microscope (SEM) and gas sorption analyzer (GSA) were applied in structural analysis of CMM. The uniform design and SPSS were applied in membrane preparation and data analysis.The polymer ATR-IR spectroscopy shows IP occurrence between aqueous phase monomer and organic phase monomer. Polymer contains both sulfonate group and quaternary ammonium group. It show that the membrane has the feature of CMM. Regression equation was gained, and it shows the CMM retention would enhance with the concentration increase of DIA, PEI and SDS and decrease with concentration decrease of FB in experimental range. The composite layer can be observed from membrane SEM after IP. The CMM retention to NaCl, polyethylene glycol(PEG), Xylenol orange and Methyl chloride is12.4%, 90%, 96%,88% and 88.2% respectively.

Tailoring the structure of polyamide thin film composite membrane with zwitterions to achieve high water permeability and antifouling property

RSC Advances ◽  
2015 ◽  
Vol 5 (120) ◽  
pp. 98730-98739 ◽  
Author(s):  
Xiaodan Weng ◽  
Yanli Ji ◽  
Fengyang Zhao ◽  
Quanfu An ◽  
Congjie Gao
Keyword(s):  
Thin Film ◽  
Protein Adsorption ◽  
Composite Membrane ◽  
Water Permeability ◽  
Interfacial Polymerization ◽  
Water Flux ◽  
High Water ◽  
Film Composite ◽  
Thin Film Composite Membrane ◽  
Thin Film Composite

Zwitterionic membranes prepared via interfacial polymerization directly exhibit remarkably high water flux (80.3 L m−2 h−1) and protein adsorption resistance.

Study on Compositions in Aqueous Phase of Hollow Fiber Composite Nanofiltration Membrane

2012 ◽  
Vol 529 ◽  
pp. 569-573 ◽  
Author(s):  
Lei Wen ◽  
Wei Wang
Keyword(s):  
Phase Composition ◽  
Aqueous Phase ◽  
Hollow Fiber ◽  
Interfacial Polymerization ◽  
Fiber Composite ◽  
Water Flux ◽  
Sulfamic Acid ◽  
Nanofiltration Membrane ◽  
Trimesoyl Chloride ◽  
Polymerization Method

Hollow fiber composite nanofiltration (NF) membranes were prepared by interfacial polymerization method, with polysulfone (PSF) hollow fiber ultrafiltration membrane as base membrane, piperazine (PIP) as the aqueous phase monomer and trimesoyl chloride (TMC) as the organic phase monomer. The effects of aqueous phase composition on composite NF were discussed. The experimental results show that the optimum compositions in aqueous phase: 1wt% PIP, 0.05wt% MPDA, 1wt% TEA, 3wt% sulfamic acid. The best rejection to MgSO4 was 94.7%, and water flux was 66.1L•m-2•h-1.

scholarly journals Preparation and characterization of a novel nanofiltration membrane with chlorine-tolerant property and good separation performance

RSC Advances ◽  
2018 ◽  
Vol 8 (64) ◽  
pp. 36430-36440 ◽  
Author(s):  
Yi Liu ◽  
Bo Lin ◽  
Wenchao Liu ◽  
Junjun Li ◽  
Congjie Gao ◽  
...  
Keyword(s):  
Water Flux ◽  
High Water ◽  
Separation Property ◽  
Separation Performance ◽  
Nanofiltration Membrane ◽  
Good Separation ◽  
Factors Affecting

High water flux, good separation property and excellent chlorine resistance are crucial factors affecting the development of nanofiltration (NF) membranes.

Electrospray interfacial polymerization for a loose NF membrane: Super-selective dye separation in saline dye wastewater treatment

2021 ◽  
Author(s):  
Yesol Kang ◽  
Jaewon Jang ◽  
Yunho Lee ◽  
In S. Kim
Keyword(s):  
Wastewater Treatment ◽  
Graphene Oxide ◽  
Interfacial Polymerization ◽  
High Water ◽  
Nanofiltration Membrane ◽  
Dye Wastewater ◽  
Sulfonated Graphene ◽  
Water Permeance

A sulfonated graphene oxide (SGO) composite loose nanofiltration membrane (LNM) with high water permeance was fabricated by electrospray interfacial polymerization (EIP) method to treat saline dye wastewater. SGO incorporated EIP...

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