Zeta-potential and rejection rates of a polyethersulfone nanofiltration membrane in single salt solutions

Ernst, Mathias; Bismarck, Alexander; Springer, Jürgen; Jekel, Martin

doi:10.1016/s0376-7388(99)00238-0

Cited by 132 publications

(66 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The permeance describes the flux through a membrane (i.e. how much volume of water passes through the membrane per unit time, area and pressure), whilst the rejection is quantified by the molecular weight cut-off (MWCO) [31] or the amount of ions [33], e.g. Ca 2+ or SO 4 2− , retained by the membrane.…”

Section: Nanopaper Membrane Performancementioning

confidence: 99%

Cellulose nanopapers as tight aqueous ultra-filtration membranes

Mautner

Lee

Tammelin

et al. 2015

Reactive and Functional Polymers

Self Cite

168

114

View full text Add to dashboard Cite

Section: Nanopaper Membrane Performancementioning

confidence: 99%

Cellulose nanopapers as tight aqueous ultra-filtration membranes

Mautner

Lee

Tammelin

et al. 2015

Reactive and Functional Polymers

Self Cite

168

114

View full text Add to dashboard Cite

“…27 The charge of NF membrane was reported to originate from the dissociation of surface groups such as sulfonated or carboxyl acids and from within the membrane pore structure. 28,29 The membrane surface groups can either be acidic, basic or a combination of both, depending on the specific materials used during the membrane fabrication process. 23 Discussions on acidic surface charge of NF membranes could be found in open literatures as these membranes are reportedly used for acids separation/recovery especially from organic sources.…”

Section: Nf Separation Principle and Mechanismsmentioning

confidence: 99%

“…The dissociation of the membrane surface groups is strongly influenced by the condition of the contacting solutions namely pH and concentration. 29 This special electrostatic interaction is the reason for the better selectivity of divalent ions from the monovalent ions possessed by NF membranes. Unlike Donnan exclusion mechanism, dielectric exclusion and "hydration mechanism" were not really well understood.…”

Section: Nf Separation Principle and Mechanismsmentioning

confidence: 99%

Recovery of Organic Acids from Fermentation Broth Using Nanofiltration Technologies: A Review

Zaman

Law

Chai

et al. 2017

JPS

View full text Add to dashboard Cite

show abstract

“…However, since the late 90's the quest for more energy efficient technologies have pushed research in the direction of osmotically driven desalination techniques such as forward osmosis (FO) [3,4]. FO has shown promise when integrated along with membrane bio-reactors [5], nano-filtration [6] or membrane distillation [7] in order to reduce organic fouling [8] when treating highly concentrated organic solutions or RO brines. Although the operating principles of RO and FO highly differ from each other, the first membranes designed for FO were very similar to RO membranes [9,10].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of thin film composite poly(amide)-carbon-nanotube supported membranes for enhanced performance in osmotically driven desalination systems

Dumée

Lee

Sears

et al. 2013

Journal of Membrane Science

View full text Add to dashboard Cite

Cite this article as: Ludovic Dumée, Judy Lee, Kallista Sears, Blaise Tardy, Mikel Duke and Stephen Gray, Fabrication of thin film composite poly(amide)-carbon-nanotube supported membranes for enhanced performance in osmotically driven desalination systems, Journal of Membrane Science, http://dx.doi.org/10. 1016/j.memsci.2012.09.026 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractThe search for lower energy consumption desalination systems has been driving research in the past decade towards the investigation of osmotically driven membrane processes, such as forward osmosis (FO) or osmotic distillation (OD). Despite similarities with reverse osmosis (RO) membranes, thin film composite (TFC) for FO membranes require careful design to reduce salt concentration polarization formation within the large pores composing the supporting layer. An investigation of a novel, highly stable, robust support made solely of carbon nanotubes (CNTs), which could find applications in both RO and FO was undertaken. TFC membranes were fabricated by interfacially polymerizing for the first time a dense poly(amide) (PA) layer on selfsupporting bucky-papers (BPs) made of hydroxyl-functionalized entangled CNTs. These hydrophilic supports exhibited low contact angle with water (< 20 o ), high water uptake capacity (17 wt%), large porosity (> 90%), making it a promising material when compared with poly(sulfone) (PSf), the traditional polymer used to fabricate TFC membrane supports in RO. In addition, the impact of the support hydrophilicity on the stability of the interfacially polymerized film and on water adsorption was investigated by oxygen-plasma treating various potential support materials, exhibiting similar geometrical properties. The morphology and salt diffusion of both CNT BP and PSf supports were investigated, and the novel BP-PA composite membranes were found to be superior to commercially available TFC membranes. KeywordsCarbon nanotube bucky-paper; forward osmosis; thin film composite membrane; poly(amide) interfacial polymerization 3

show abstract

Zeta-potential and rejection rates of a polyethersulfone nanofiltration membrane in single salt solutions

Cited by 132 publications

References 21 publications

Cellulose nanopapers as tight aqueous ultra-filtration membranes

Cellulose nanopapers as tight aqueous ultra-filtration membranes

Recovery of Organic Acids from Fermentation Broth Using Nanofiltration Technologies: A Review

Fabrication of thin film composite poly(amide)-carbon-nanotube supported membranes for enhanced performance in osmotically driven desalination systems

Contact Info

Product

Resources

About