Assessment on Performance-properties of Asymmetric Nanofiltration Membranes from Polyethersulfone/n-Methyl-2-pyrrolidone/water Blends with Poly(vinyl pyrrolidone) as Additive

2021 ◽  
Author(s):  
Sabariah Rozali ◽  
Nurul Hannan Mohd Safari ◽  
Abdul Rahman Hassan ◽  
Musa Ahmad ◽  
Rosli Mohd Yunus
Keyword(s):  
Structural Properties ◽  
Water Flux ◽  
Vinyl Pyrrolidone ◽  
Nanofiltration Membranes ◽  
Performance Properties ◽  
Salt Rejection ◽  
Structural Details ◽  
Dope Solution ◽  
Improved Performance ◽  
Poly Vinyl Pyrrolidone

In this study, the effect of poly(vinyl pyrrolidone) (PVP) additive on the fabrication of asymmetric nanofiltration (NF) membranes was investigated in terms of performance, structural details and key properties. On addition of PVP ranging from 2 to 10 wt% into the dope solution, the fabricated NF membranes exhibited significantly different in properties and improved performance. In particular, the membranes made from 2 wt% PVP had the highest water flux and salt rejection of about 3.61 × 10–6 m3/m2s and 44.49 %, respectively. Modeling results revealed that small amount of PVP (2–4 wt%) produced finer structural properties. Moreover, the key properties (rp, ∆x/Ak and ζ) of the fabricated NF membranes were found to be within the range of that of commercial NF membranes.

Graphene-based nanofiltration membranes for improving salt rejection, water flux and antifouling–A review

Desalination ◽  
2018 ◽  
Vol 429 ◽  
pp. 119-133 ◽  
Author(s):  
Anisha Anand ◽  
Binesh Unnikrishnan ◽  
Ju-Yi Mao ◽  
Han-Jia Lin ◽  
Chih-Ching Huang
Keyword(s):  
Water Flux ◽  
Nanofiltration Membranes ◽  
Salt Rejection

Preparation of antifouling polyetherimide/hydrolysed PIAM blend nanofiltration membranes for salt rejection applications

RSC Advances ◽  
2014 ◽  
Vol 4 (99) ◽  
pp. 55773-55780 ◽  
Author(s):  
Raghavendra S. Hebbar ◽  
Arun M. Isloor ◽  
A. F. Ismail
Keyword(s):  
Energy Consumption ◽  
Pure Water ◽  
Water Flux ◽  
Sodium Sulphate ◽  
Water Desalination ◽  
Low Energy ◽  
Nanofiltration Membranes ◽  
Salt Rejection ◽  
Low Energy Consumption ◽  
Pure Water Flux

Polyetherimide/hydrolysed PIAM blend NF membranes have been prepared and characterized. The PEI/hydrolysed PIAM composition of 80 : 20 showed very good salt rejection (sodium sulphate) up to 76% with a pure water flux of 11.8 L m−2 h−1. This study provides a simple and effective approach to produce negatively charged NF membranes for water desalination applications with low energy consumption.

scholarly journals Enhancing the performance of thin-film nanocomposite nanofiltration membranes using MAH-modified GO nanosheets

RSC Advances ◽  
2017 ◽  
Vol 7 (86) ◽  
pp. 54898-54910 ◽  
Author(s):  
Quanling Xie ◽  
Wenyao Shao ◽  
Shishen Zhang ◽  
Zhuan Hong ◽  
Qiuquan Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Maleic Anhydride ◽  
Interfacial Polymerization ◽  
Water Flux ◽  
Functionalized Graphene ◽  
Nanofiltration Membranes ◽  
Functionalized Graphene Oxide ◽  
Salt Rejection ◽  
Thin Film Nanocomposite

In this work, novel thin-film nanocompostie NF membranes were developed through modification with maleic anhydride functionalized graphene oxideviainterfacial polymerization, which showed the enhanced water flux with retaining high salt rejection.

scholarly journals Effect of Chemical Structure on the Performance of Sulfonated Poly(aryl ether sulfone) Composite Nanofiltration Membranes

Membranes ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 6 ◽  
Author(s):  
Shouhai Zhang ◽  
Shanshan Guan ◽  
Chengde Liu ◽  
Zhenlin Wang ◽  
Danhui Wang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Chemical Structure ◽  
Water Flux ◽  
Composite Membranes ◽  
Solution Temperature ◽  
Aryl Ether ◽  
Nanofiltration Membranes ◽  
Coating Materials ◽  
Salt Rejection ◽  
Sulfonated Poly

This paper discusses the effect of the chemical structure of sulfonated poly(aryl ether sulfone) on the performance of composite nanofiltration membranes. The composite nanofiltration membranes were fabricated by coating sulfonated poly(aryl ether sulfone) solution onto the top surface of poly(phthalazinone ether sulfone ketone) support membranes. Three kinds of sulfonated poly(aryl ether sulfone)s with different amounts of phthalazinone moieties, namely, sulfonated poly(phthalazinone ether sulfone) (SPPES), sulfonated poly(phthalazinone biphenyl ether sulfone) (SPPBES), and sulfonated poly(phthalazinone hydroquinone ether sulfone)s (SPPHES), were used as coating materials. The solvents used in preparing the coating solution were investigated and optimized. The separation properties, thermal stability, and chlorine resistance of composite membranes were determined. The structures and morphologies of membranes were characterized with FTIR and SEM, respectively. The membrane prepared from SPPES with more phthalazinone moiety groups showed high water flux and salt rejection. The salt rejection of composite membranes followed the order SPPES > SPPHES > SPPBES. The rejection of the three composite membranes decreased slightly with the solution temperature rising from 20 to 90 °C, while the composite membrane with SPPES as the active layer showed a higher increase in flux than others. The results indicate that SPPES composite membranes show better thermal stability than others.

Improved performance of poly(vinyl pyrrolidone)/phosphonated poly(2,6-dimethyl-1,4-phenylene oxide)/graphitic carbon nitride nanocomposite membranes for high temperature proton exchange membrane fuel cells

RSC Advances ◽  
2016 ◽  
Vol 6 (108) ◽  
pp. 106237-106247 ◽  
Author(s):  
Gongwen Zou ◽  
Wei Wu ◽  
Chuanbo Cong ◽  
Xiaoyu Meng ◽  
Kun Zhao ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Proton Exchange Membrane ◽  
Polymer Electrolyte Membrane ◽  
Proton Exchange ◽  
Vinyl Pyrrolidone ◽  
Nanocomposite Membranes ◽  
Electrolyte Membrane ◽  
Improved Performance ◽  
Poly Vinyl Pyrrolidone ◽  
Exchange Membrane

To achieve desirable performance of a polymer electrolyte membrane with higher proton conduction and better mechanical strength is a challenging work in the development of the phosphoric acid (PA) doped solid-state membrane.

scholarly journals ALD coating of centrifugally spun polymeric fibers and postannealing: case study for nanotubular TiO2 photocatalyst

2021 ◽  
Author(s):  
Martina Rihova ◽  
Oksana Yurkevich ◽  
Martin Motola ◽  
Ludek Hromadko ◽  
Zdeněk Spotz ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Vinyl Pyrrolidone ◽  
Tio2 Photocatalyst ◽  
Polymeric Fibers ◽  
Layer Deposition ◽  
Centrifugal Spinning ◽  
Poly Vinyl Pyrrolidone

This work describes the synthesis of highly photocatalytically active TiO2 tubes (TiTBs) by combining centrifugal spinning and atomic layer deposition (ALD). Poly(vinyl pyrrolidone) (PVP) fibers were first produced by centrifugal...

scholarly journals Potential Implantable Nanofibrous Biomaterials Combined with Stem Cells for Subchondral Bone Regeneration

Materials ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3087
Author(s):  
Rana Smaida ◽  
Luc Pijnenburg ◽  
Silvia Irusta ◽  
Erico Himawan ◽  
Gracia Mendoza ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Regeneration ◽  
Subchondral Bone ◽  
Therapeutic Potential ◽  
Sodium Hyaluronate ◽  
Vinyl Pyrrolidone ◽  
Regenerative Ability ◽  
Poly Vinyl Pyrrolidone

The treatment of osteochondral defects remains a challenge. Four scaffolds were produced using Food and Drug Administration (FDA)-approved polymers to investigate their therapeutic potential for the regeneration of the osteochondral unit. Polycaprolactone (PCL) and poly(vinyl-pyrrolidone) (PVP) scaffolds were made by electrohydrodynamic techniques. Hydroxyapatite (HAp) and/or sodium hyaluronate (HA) can be then loaded to PCL nanofibers and/or PVP particles. The purpose of adding hydroxyapatite and sodium hyaluronate into PCL/PVP scaffolds is to increase the regenerative ability for subchondral bone and joint cartilage, respectively. Human bone marrow-derived mesenchymal stem cells (hBM-MSCs) were seeded on these biomaterials. The biocompatibility of these biomaterials in vitro and in vivo, as well as their potential to support MSC differentiation under specific chondrogenic or osteogenic conditions, were evaluated. We show here that hBM-MSCs could proliferate and differentiate both in vitro and in vivo on these biomaterials. In addition, the PCL-HAp could effectively increase the mineralization and induce the differentiation of MSCs into osteoblasts in an osteogenic condition. These results indicate that PCL-HAp biomaterials combined with MSCs could be a beneficial candidate for subchondral bone regeneration.

Sign in / Sign up

Export Citation Format

Share Document