A novel PPTA/PPy composite organic solvent nanofiltration (OSN) membrane prepared by chemical vapor deposition for organic dye wastewater treatment

Lai, Xing; Wang, Chun; Wang, Liming; Xiao, Changfa

doi:10.1016/j.jwpe.2021.102533

Cited by 19 publications

(13 citation statements)

References 58 publications

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“…Mahalingam et al [ 67 ] firstly prepared HF OSN membranes by spray coating with a 16 nm thickness GO skin layer on the outer surface of crosslinked polyetherimide substrates. Lai et al [ 32 ] successfully prepared poly(p-phenylene terephthamide) resin (PPTA) HF OSN membranes that could work stably at 80 °C DMAc by the chemical vapor deposition (CVD) method.…”

Section: Structures and Preparation Methods Of Hf Osn Membranesmentioning

confidence: 99%

“…In addition to crosslinking treatment and introducing nanomaterials to prepare MMMs, there are other treatment methods to treat HF OSN membranes, such as thermal treatment [ 32 , 48 , 60 , 73 , 77 ], acid [ 50 , 77 ]/alkali [ 50 ] treatment, and activation [ 68 ].…”

Section: Treatment Methods Of Hf Osn Membranesmentioning

confidence: 99%

“…The thermal treatment has been used to accelerate the reaction [ 48 ], to meet the reaction conditions [ 32 , 60 ], and to dry membrane fibers [ 73 , 77 ]. Acid treatment is used to oxidize the substrate to make it hydrophilic [ 50 , 77 ] and alkali treatment is used to make the ceramics and polymers tightly bonded [ 50 ].…”

Section: Treatment Methods Of Hf Osn Membranesmentioning

confidence: 99%

“…Although there are many published works about OSN membranes, most of the current research on OSN process is focused on the concentration process, which is operated at room temperature [ 21 ], and there are fewer published reports on emerging OSN processes such as the separation of non-polar solvent systems [ 28 ], fractionation [ 8 , 29 , 30 , 31 ], and high-temperature OSN process [ 32 , 33 ].…”

Section: Fundamentalmentioning

confidence: 99%

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Hollow Fiber Membrane for Organic Solvent Nanofiltration: A Mini Review

Liu

Wang

et al. 2022

Membranes

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Organic solvents take up 80% of the total chemicals used in pharmaceutical and related industries, while their reuse rate is less than 50%. Traditional solvent treatment methods such as distillation and evaporation have many disadvantages such as high cost, environmental unfriendliness, and difficulty in recovering heat-sensitive, high-value molecules. Organic solvent nanofiltration (OSN) has been a prevalent research topic for the separation and purification of organic solvent systems since the beginning of this century with the benefits of no-phase change, high operational flexibility, low cost, as well as environmental friendliness. Especially, hollow fiber (HF) OSN membranes have gained a lot of attention due to their high packing density and easy scale-up as compared with flat-sheet OSN membranes. This paper critically reviewed the recent research progress in the preparation of HF OSN membranes with high performance, including different materials, preparation methods, and modification treatments. This paper also predicts the future direction of HF OSN membrane development.

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Section: Structures and Preparation Methods Of Hf Osn Membranesmentioning

confidence: 99%

Section: Treatment Methods Of Hf Osn Membranesmentioning

confidence: 99%

Section: Treatment Methods Of Hf Osn Membranesmentioning

confidence: 99%

Section: Fundamentalmentioning

confidence: 99%

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Hollow Fiber Membrane for Organic Solvent Nanofiltration: A Mini Review

Liu

Wang

et al. 2022

Membranes

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“…Organic supports, such as melamine sponge [ 16 ] and poly( p -phenylene terephthalamide) [ 124 ], have been used to provide macroporous sponges or membranes. Additionally, natural organics have been used to provide a value-added material, e.g., bacterial cellulose [ 125 ], carbonized chicken feathers [ 126 ], Chinese yam peel [ 127 ], and wheat straw [ 128 ].…”

Section: Polypyrrole Adsorbentsmentioning

confidence: 99%

Recent Advances in the Removal of Organic Dyes from Aqueous Media with Conducting Polymers, Polyaniline and Polypyrrole, and Their Composites

Stejskal

2022

Polymers

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Water pollution by organic dyes, and its remediation, is an important environmental issue associated with ever-increasing scientific interest. Conducting polymers have recently come to the forefront as advanced agents for removing dye. The present review reports on the progress represented by the literature published in 2020–2022 on the application of conducting polymers and their composites in the removal of dyes from aqueous media. Two composites, incorporating the most important polymers, polyaniline, and polypyrrole, have been used as efficient dye adsorbents or photocatalysts of dye decomposition. The recent application trends are outlined, and future uses also exploiting the electrical and electrochemical properties of conducting polymers are offered.

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Bioinspired Gradient Covalent Organic Framework Membranes for Ultrafast and Asymmetric Solvent Transport

Zuo,

Lyu,

Yao

et al. 2024

Advanced Materials

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Gradients played a pivotal role in membrane technologies, e.g., osmotic energy conversion, desalination, biomimetic actuation, selective separation and more. In these applications, the compositional gradients are of great relevance for successful function implementation, ranging from solvent separation to smart devices. However, the construction of functional gradient in membranes is still challenging both in scale and directions. Inspired by the specific function‐related, graded porous structures in glomerular filtration membranes, we report here a general approach for constructing gradient covalent organic framework membranes (GCOMx) applying poly (ionic liquid)s as template. With graded distribution of highly porous COF crystals along the membrane, GCOMx exhibited an unprecedented asymmetric solvent transport when applying different membrane sides as the solvent feed surface during filtration, leading to a much‐enhanced flux (10∼18 times) of the “large‐to‐small” pore flow comparing to the reverse direction, verified by hydromechanical theoretical calculations. Upon systematic experiments, GCOMx achieved superior permeance in nonpolar (hexane∼260.45 LMH bar−1) and polar (methanol∼175.93 LMH bar−1) solvents, together with narrow molecular weight cut‐off (MWCO, 472 g mol−1) and molecular weight retention onset (MWRO, <182 g mol−1). Interestingly, GCOMx showed significant filtration performance in simulated kidney dialysis, revealing great potential of GCOMx in bionic applications.This article is protected by copyright. All rights reserved

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A novel PPTA/PPy composite organic solvent nanofiltration (OSN) membrane prepared by chemical vapor deposition for organic dye wastewater treatment

Cited by 19 publications

References 58 publications

Hollow Fiber Membrane for Organic Solvent Nanofiltration: A Mini Review

Hollow Fiber Membrane for Organic Solvent Nanofiltration: A Mini Review

Recent Advances in the Removal of Organic Dyes from Aqueous Media with Conducting Polymers, Polyaniline and Polypyrrole, and Their Composites

Bioinspired Gradient Covalent Organic Framework Membranes for Ultrafast and Asymmetric Solvent Transport

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