Properties of nanofiltration membranes model development and industrial application. by Johannes Martinus Koen Timmer

Cover of: Properties of nanofiltration membranes | Johannes Martinus Koen Timmer

Published by Technische Universiteit Eindhoven in Eindhoven .

Written in English

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Book details

The Physical Object
Pagination136p.
Number of Pages136
ID Numbers
Open LibraryOL18557838M
ISBN 109038628722

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Determination of properties of nanofiltration membranes; Charge properties from rejection measurements using NaCl and prediction of rejection of CaCl2 and NaH2PO4 General discussion and future research needs 1 19 39 61 87 1 CHAPTER 1 Industrial membrane processes; perspectives of by: "This book is an excellent source of information for someone who wants to know more about nanofiltration membranes.

the publication of this book is timely and should be a good reference book for many scientists and engineers. Each chapter is well explained and discussed, with an extensive list of by:   Covering fabrication, characterization, and applications nanofiltration (NF) membranes, this book provides a comprehensive overview of the development of NF membrane technology over the past decade.

It uniquely covers a variety of fabrication techniques, comparing the procedures of each technique to produce polymeric membranes of different Cited by: Covering fabrication, characterization, and applications nanofiltration (NF) membranes, this book provides a comprehensive overview of the development of NF membrane technology over the past decade.

It uniquely covers a variety of fabrication techniques, comparing the procedures of each technique to produce polymeric membranes of different morphologies. The book also discusses. Covering fabrication, characterization, and applications nanofiltration (NF) membranes, this book provides a comprehensive overview of the development of NF membrane technology over the past decade.

It uniquely covers a variety of fabrication techniques, comparing the procedures of each technique to produce polymeric membranes of different. The nanofiltration membrane was first introduced during late s possessing properties between reverse osmosis and ultrafiltration membrane.

Nanofiltration membranes have been used for applications including food industry, pharmaceutical, wastewater treatment, and desalination.

This review presents an inclusive outlook of recent research and. Therefore, the separation properties of nanofiltration membrane are determined in general by two distinct properties: (1) the pore size of the membranes, which corresponds to a molecular weight cut-off value of about (±) Da and (2) the surface charge which can be positive or negative and affects the permeability of charged components.

Nanofiltration (NF) membranes have come a long way since it was first recognized in the late 80's. With properties in between ultrafiltration (UF) and reverse osmosis (RO), NF membranes possess pore size typically of 1 nm which corresponds to molecular weight cut-off (MWCO) of – Da.

NF membranes in contact with aqueous solution are also slightly charged due to the dissociation. Tadashi Uragami, in Biopolymer Grafting, Nanofiltration. Conventional NF membranes had a relatively low flux.

Mu et al. () grafted two mesogenic compounds to CS to change the structure, hence the performance of the NF membrane.

A series of novel composite NF membranes were prepared by overcoating the polysulfone UF membrane with the mixture of CS and mesogenic. A novel nanofiltration membrane prepared by modification of a commercial membrane surface is fabricated using polydopamine (PDA) and hydroxyl propyl trimethyl ammonium chloride chitosan (HACC) mixed with chitosan (CN) and chelated silver (Ag) nanoparticles.

The surface chemical composition, cross-sectional morpholo. Nanofiltration (NF) technology offers several advantages over classic separation processes. NF membranes have been increasingly implemented in water treatment processes (e.g., desalination of brackish water and seawater) and for wastewater (e.g., textile, pulp and paper, pharmaceutical, and agro-industrial).

The specific selectivity toward small solutes and the lower energy consumption of NF. Endre Nagy, in Basic Equations of the Mass Transport through a Membrane Layer, Introduction. Nanofiltration is a pressure-driven membrane process that lies between ultrafiltration and reverse osmosis in terms of its ability to reject molecular or ionic species.

Nanofiltration membranes, organic membranes, or ceramic membranes can be either dense or porous. Nanofiltration membranes are defined as having a pore size in the order of nanometers (nm) (1×10 −9 m). As a comparison, the atomic radius of a sodium ion and a chlorine ion is about nm (×10 −9 m) and nm (×10 −9 m), respectively.

This demonstrates that nanofiltration membranes are near the range to remove rather small ions. Structural parameters and electrical properties of nanofiltration membranes (Desal-5, NF, NTR and G) were determined with permeation experiments of aqueous solutions of.

Carboxyls are inherent functional groups of thin-film composite polyamide nanofiltration (NF) membranes, which may play a role in membrane performance and fouling.

Their surface presence is attributed to incomplete reaction of acyl chloride monomers during the membrane active layer synthesis by interfacial polymerization. In order to unravel the effect of carboxyl group density on organic.

Sustainable and affordable supply of clean, safe, and adequate water is one of the most challenging issues facing the world.

Membrane separation technology is one of the most cost-effective and widely applied technologies for water purification. Polymeric membranes such as cellulose-based (CA) membranes and thin-film composite (TFC) membranes have dominated the industry since To improve the filtration performance and properties of organic solvent nanofiltration (OSN) membranes, we firstly introduce nanoporous silica (SiO2) particles into the polyamide (PA) active layer of polysulfone (PSf) membrane via an interfacial polymerization process.

Results from the study revealed that introduction of SiO2 influenced the properties of PSf/PA-SiO2 composite membranes by. In this study, nanofiltration membranes were prepared for brackish water treatment. It is desirable for the desalination membranes to have hydrophilic properties, as this usually correlates with the tendency of a membrane for allowing water to permeate instead of rejecting it (hydrophobic).

In this study, polyamide (PA) nanofiltration (NF) membranes embedded with various graphene oxide (GO) contents to improve the membrane flux and anti-fouling properties are proposed and successfully prepared for desalination applications.

The prepared PA/GO membranes exhibited much higher flux than did pristine PA membranes. High water flux, good separation property and excellent chlorine resistance are crucial factors affecting the development of nanofiltration (NF) membranes.

To obtain these properties, NF membranes were fabricated via interfacial polymerization using m-xylylenediamine (m.

"This book is an excellent source of information for someone who wants to know more about nanofiltration membranes. the publication of this book is timely and should be a good reference book for many scientists and engineers.

Each chapter is well explained and discussed, with an extensive list of references. Mitigation of membrane fouling is an important step for boosting its competitiveness.

According to reports in the literature [, ], hydrophilic and smooth membrane surfaces are desirable for improving membrane antifouling properties. In addition, the surface charges can also affect membrane antifouling properties. Nanofiltration (NF) is the fourth class of pressure-driven membranes born after microfiltration (MF), ultrafiltration (UF), and reverse osmosis (RO).

It was first developed in the late s as a variant of RO membrane with reduced separation efficiency for smaller and less charged ions such as. Shushan Yuan, Gang Zhang, Junfeng Zheng, Pengrui Jin, Junyong Zhu, Jie Yang, Suilin Liu, Peter Van Puyvelde, Bart Van der Bruggen, Tuning intermolecular pores of resorcin[4]arene-based membranes for enhanced nanofiltration performance, Journal of Membrane Science, /, (), ().

The degradation of polyamide (PA) nanofiltration and reverse osmosis membranes by chlorine needs to be understood in order to develop chlorine-resistant membranes.

Coated and uncoated fully aromatic (FA) and piperazine (PIP) semi-aromatic PA membranes were treated with hypochlorite solution and analyzed by X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR). XPS. Nanofiltration can be used as well for the production of drinking water, as for the treatment of process and waste waters.

The mechanism for separation can be explained in terms of charge effects and/or size effects. Experimental evidence is given for several salt solutions and saccharide solutions. Three commercial nanofiltration membranes are.

Nanofiltration (NF) is a membrane liquid-separation technology sharing many characteristics with reverse osmosis (RO). Unlike RO, which has high rejection of virtually all dissolved solutes, NF provides high rejection of multivalent ions, such as calcium, and low rejection of monovalent ions, such as chloride.

In this work, a nylon 6 nanofibrous membrane was prepared via solution blowing technology and followed hot-press as scaffold for nanofiltration. The structure and properties of the hot-pressed nylon 6 nanofibrous membrane (HNM) were studied the effect of hot-pressing parameters and areal densities.

Then an ultra-thin polyamide (PA) active layer was prepared by interfacial polymerization on HNM. Nanofiltration membranes have evolved as a promising solution to tackle the clean water scarcity and wastewater treatment processes with their low energy requirement and environment friendly operating conditions.

Thin film composite nanofiltration membranes with high permeability, and excellent antifouling and antibacterial properties are important component for wastewater treatment and clean.

The design of a hybrid forward osmosis–nanofiltration (FO–NF) system for the extraction of high-quality water from wastewater is presented here. Simulations were performed based on experimental results obtained in a previous study using real wastewater as the feed solution.

A sensitivity analysis, conducted to evaluate the influence of different process parameters, showed that an optimum. Find many great new & used options and get the best deals for Nanofiltration Membranes: Synthesis, Characterization, and Applications by Ahmad Fauzi Ismail (Hardback, ).

Koch Membrane Systems' Henia and Jorge Yacubowicz outline the uses and benefits of nanofiltration. Modern crossflow filtration technology has principally evolved during the last thirty years, following the significant advancements in polymer chemistry over the same time.

Kiso Y, Nishimura Y, Kitao T, Nishimura K () Rejection properties of non-phenylic pesticides with nanofiltration membranes.

J Membr Sci – CrossRef Google Scholar Zhang W, He G, Gao P, Chen G () Development and characterization of composite nanofiltration membranes and their application in concentration of antibiotics. The efficiency of the nanofiltration process is affected by fouling on the membrane and other factors like tangential velocity, pressure, temperature, turbulence, feed particles size, concentration polarization changes in membrane properties, and membrane characteristics.

Certain areas in Senegal have a serious problem of high fluoride and salinity in underground water because of soil properties. This water currently used for drink has a bad taste on consumption and caused diseases like dental fluorosis and skeletal fluorosis.

A membrane filtration plant constructed by Pall Corporation was improved through nanofiltration (NF) and Low Pressure Reverse Osmosis. To confirm the optimization of membrane properties, a series of characterizations were carried out: SEM, EDX analysis, AFM, water contact angle, and zeta potential measurements.

The results indicate an overall high performance of surface properties with a homogeneous nanoparticle distribution, low roughness, favorable hydrophilicity, and.

Impacts of secondary mixed monomer on properties of thin film composite (TFC) nanofiltration and reverse osmosis membranes: A review October Recent Patents on Nanotechnology   Xiaowei Da, Xianfu Chen, Baohong Sun, Juanjuan Wen, Minghui Qiu, Yiqun Fan, Preparation of zirconia nanofiltration membranes through an aqueous sol–gel process modified by glycerol for the treatment of wastewater with high salinity, Journal of Membrane Science, /,(), ().

Nanofiltration (NF) membranes, especially polyamide (PA) ones, are widely applied in water treatment, food processing, and resource recovery thanks to their excellent separation selectivity to small solutes and high water permeability.

However, membrane fouling is inevitable during the long-term operation and limits the large-scale applications of NF technology. Chemical cleaning is considered. Nanofiltration is a membrane separation process whose cut-off lies between that of reverse osmosis and ultrafiltration.

The commonly used operating pressure is in the range of – MPa. Cut-offs are specified as being between and Dalton.

The selectivity of a nanofiltration membrane is determined by two different parameters. Nanofiltration (NF) is a type of membrane which functions in a similar way to reverse osmosis, but is generally used to retain divalent ions and allow monovalent ions to pass through.

Nanofiltration has been used to recover the metal or acid value .and more effective membrane technologies to clean water. Much of the current work has focused on new designs of nanofilters, and nanofiltration systems are currently deployed in a few metropolitan areas.

Learning about nanofiltration also reinforces important fundamental chemistry concepts that are sometimes difficult for students to grasp.The effects of β-CD concentration on membrane morphologies, nanofiltration performances, surface hydrophilicities and anti-fouling properties were investigated.

It was found that the permeate flux increased with increasing the β-CD concentration, and no decline of rejection was observed.

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